diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index 6d7d0e207082b..369e495d0c3e8 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -21,6 +21,15 @@ config DRM_MEDIATEK
 	  This driver provides kernel mode setting and
 	  buffer management to userspace.
 
+config DRM_MEDIATEK_DP
+	tristate "DRM DPTX Support for MediaTek SoCs"
+	depends on DRM_MEDIATEK
+	select PHY_MTK_DP
+	select DRM_DISPLAY_HELPER
+	select DRM_DISPLAY_DP_HELPER
+	help
+	  DRM/KMS Display Port driver for MediaTek SoCs.
+
 config DRM_MEDIATEK_HDMI
 	tristate "DRM HDMI Support for Mediatek SoCs"
 	depends on DRM_MEDIATEK
diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index 6e604a933ed08..3517d1c65cd74 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -23,3 +23,5 @@ mediatek-drm-hdmi-objs := mtk_cec.o \
 			  mtk_hdmi_ddc.o
 
 obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o
+
+obj-$(CONFIG_DRM_MEDIATEK_DP) += mtk_dp.o
diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
new file mode 100644
index 0000000000000..e2ec9b02b1aa9
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -0,0 +1,1999 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019-2022 MediaTek Inc.
+ * Copyright (c) 2022 BayLibre
+ */
+
+#include <drm/display/drm_dp.h>
+#include <drm/display/drm_dp_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <linux/arm-smccc.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/media-bus-format.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/soc/mediatek/mtk_sip_svc.h>
+#include <video/videomode.h>
+
+#include "mtk_dp_reg.h"
+
+#define MTK_DP_SIP_CONTROL_AARCH32	MTK_SIP_SMC_CMD(0x523)
+#define MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE	(BIT(0) | BIT(5))
+
+#define MTK_DP_THREAD_CABLE_STATE_CHG	BIT(0)
+#define MTK_DP_THREAD_HPD_EVENT		BIT(1)
+
+#define MTK_DP_4P1T 4
+#define MTK_DP_HDE 2
+#define MTK_DP_PIX_PER_ADDR 2
+#define MTK_DP_AUX_WAIT_REPLY_COUNT 20
+#define MTK_DP_TBC_BUF_READ_START_ADDR 0x8
+#define MTK_DP_TRAIN_VOLTAGE_LEVEL_RETRY 5
+#define MTK_DP_TRAIN_DOWNSCALE_RETRY 10
+
+enum {
+	MTK_DP_CAL_GLB_BIAS_TRIM = 0,
+	MTK_DP_CAL_CLKTX_IMPSE,
+	MTK_DP_CAL_LN_TX_IMPSEL_PMOS_0,
+	MTK_DP_CAL_LN_TX_IMPSEL_PMOS_1,
+	MTK_DP_CAL_LN_TX_IMPSEL_PMOS_2,
+	MTK_DP_CAL_LN_TX_IMPSEL_PMOS_3,
+	MTK_DP_CAL_LN_TX_IMPSEL_NMOS_0,
+	MTK_DP_CAL_LN_TX_IMPSEL_NMOS_1,
+	MTK_DP_CAL_LN_TX_IMPSEL_NMOS_2,
+	MTK_DP_CAL_LN_TX_IMPSEL_NMOS_3,
+	MTK_DP_CAL_MAX,
+};
+
+struct mtk_dp_train_info {
+	bool sink_ssc;
+	bool cable_plugged_in;
+	/* link_rate is in multiple of 0.27Gbps */
+	int link_rate;
+	int lane_count;
+	unsigned int channel_eq_pattern;
+};
+
+struct mtk_dp_info {
+	enum dp_pixelformat format;
+	struct videomode vm;
+};
+
+struct mtk_dp_efuse_fmt {
+	unsigned short idx;
+	unsigned short shift;
+	unsigned short mask;
+	unsigned short min_val;
+	unsigned short max_val;
+	unsigned short default_val;
+};
+
+struct mtk_dp {
+	bool enabled;
+	u8 max_lanes;
+	u8 max_linkrate;
+	u8 rx_cap[DP_RECEIVER_CAP_SIZE];
+	u32 cal_data[MTK_DP_CAL_MAX];
+	u32 irq_thread_handle;
+	/* irq_thread_lock is used to protect irq_thread_handle */
+	spinlock_t irq_thread_lock;
+
+	struct device *dev;
+	struct drm_bridge bridge;
+	struct drm_bridge *next_bridge;
+	struct drm_connector *conn;
+	struct drm_device *drm_dev;
+	struct drm_dp_aux aux;
+
+	struct mtk_dp_info info;
+	struct mtk_dp_train_info train_info;
+
+	struct platform_device *phy_dev;
+	struct phy *phy;
+	struct regmap *regs;
+};
+
+static const struct mtk_dp_efuse_fmt mtk_dp_efuse_data[MTK_DP_CAL_MAX] = {
+	[MTK_DP_CAL_GLB_BIAS_TRIM] = {
+		.idx = 3,
+		.shift = 27,
+		.mask = 0x1f,
+		.min_val = 1,
+		.max_val = 0x1e,
+		.default_val = 0xf,
+	},
+	[MTK_DP_CAL_CLKTX_IMPSE] = {
+		.idx = 0,
+		.shift = 9,
+		.mask = 0xf,
+		.min_val = 1,
+		.max_val = 0xe,
+		.default_val = 0x8,
+	},
+	[MTK_DP_CAL_LN_TX_IMPSEL_PMOS_0] = {
+		.idx = 2,
+		.shift = 28,
+		.mask = 0xf,
+		.min_val = 1,
+		.max_val = 0xe,
+		.default_val = 0x8,
+	},
+	[MTK_DP_CAL_LN_TX_IMPSEL_PMOS_1] = {
+		.idx = 2,
+		.shift = 20,
+		.mask = 0xf,
+		.min_val = 1,
+		.max_val = 0xe,
+		.default_val = 0x8,
+	},
+	[MTK_DP_CAL_LN_TX_IMPSEL_PMOS_2] = {
+		.idx = 2,
+		.shift = 12,
+		.mask = 0xf,
+		.min_val = 1,
+		.max_val = 0xe,
+		.default_val = 0x8,
+	},
+	[MTK_DP_CAL_LN_TX_IMPSEL_PMOS_3] = {
+		.idx = 2,
+		.shift = 4,
+		.mask = 0xf,
+		.min_val = 1,
+		.max_val = 0xe,
+		.default_val = 0x8,
+	},
+	[MTK_DP_CAL_LN_TX_IMPSEL_NMOS_0] = {
+		.idx = 2,
+		.shift = 24,
+		.mask = 0xf,
+		.min_val = 1,
+		.max_val = 0xe,
+		.default_val = 0x8,
+	},
+	[MTK_DP_CAL_LN_TX_IMPSEL_NMOS_1] = {
+		.idx = 2,
+		.shift = 16,
+		.mask = 0xf,
+		.min_val = 1,
+		.max_val = 0xe,
+		.default_val = 0x8,
+	},
+	[MTK_DP_CAL_LN_TX_IMPSEL_NMOS_2] = {
+		.idx = 2,
+		.shift = 8,
+		.mask = 0xf,
+		.min_val = 1,
+		.max_val = 0xe,
+		.default_val = 0x8,
+	},
+	[MTK_DP_CAL_LN_TX_IMPSEL_NMOS_3] = {
+		.idx = 2,
+		.shift = 0,
+		.mask = 0xf,
+		.min_val = 1,
+		.max_val = 0xe,
+		.default_val = 0x8,
+	},
+};
+
+static struct regmap_config mtk_dp_regmap_config = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.reg_stride = 4,
+	.max_register = SEC_OFFSET + 0x90,
+	.name = "mtk-dp-registers",
+};
+
+static struct mtk_dp *mtk_dp_from_bridge(struct drm_bridge *b)
+{
+	return container_of(b, struct mtk_dp, bridge);
+}
+
+static u32 mtk_dp_read(struct mtk_dp *mtk_dp, u32 offset)
+{
+	u32 read_val;
+	int ret;
+
+	ret = regmap_read(mtk_dp->regs, offset, &read_val);
+	if (ret) {
+		dev_err(mtk_dp->dev, "Failed to read register 0x%x: %d\n",
+			offset, ret);
+		return 0;
+	}
+
+	return read_val;
+}
+
+static int mtk_dp_write(struct mtk_dp *mtk_dp, u32 offset, u32 val)
+{
+	int ret = regmap_write(mtk_dp->regs, offset, val);
+
+	if (ret)
+		dev_err(mtk_dp->dev,
+			"Failed to write register 0x%x with value 0x%x\n",
+			offset, val);
+	return ret;
+}
+
+static int mtk_dp_update_bits(struct mtk_dp *mtk_dp, u32 offset,
+			      u32 val, u32 mask)
+{
+	int ret = regmap_update_bits(mtk_dp->regs, offset, mask, val);
+
+	if (ret)
+		dev_err(mtk_dp->dev,
+			"Failed to update register 0x%x with value 0x%x, mask 0x%x\n",
+			offset, val, mask);
+	return ret;
+}
+
+static void mtk_dp_bulk_16bit_write(struct mtk_dp *mtk_dp, u32 offset, u8 *buf,
+				    size_t length)
+{
+	int i;
+
+	/* 2 bytes per register */
+	for (i = 0; i < length; i += 2) {
+		u32 val = buf[i] | (i + 1 < length ? buf[i + 1] << 8 : 0);
+
+		if (mtk_dp_write(mtk_dp, offset + i * 2, val))
+			return;
+	}
+}
+
+static void mtk_dp_msa_bypass_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+	u32 mask = HTOTAL_SEL_DP_ENC0_P0 | VTOTAL_SEL_DP_ENC0_P0 |
+		   HSTART_SEL_DP_ENC0_P0 | VSTART_SEL_DP_ENC0_P0 |
+		   HWIDTH_SEL_DP_ENC0_P0 | VHEIGHT_SEL_DP_ENC0_P0 |
+		   HSP_SEL_DP_ENC0_P0 | HSW_SEL_DP_ENC0_P0 |
+		   VSP_SEL_DP_ENC0_P0 | VSW_SEL_DP_ENC0_P0;
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3030, enable ? 0 : mask, mask);
+}
+
+static void mtk_dp_set_msa(struct mtk_dp *mtk_dp)
+{
+	struct drm_display_mode mode;
+	struct videomode *vm = &mtk_dp->info.vm;
+
+	drm_display_mode_from_videomode(vm, &mode);
+
+	/* horizontal */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3010,
+			   mode.htotal, HTOTAL_SW_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3018,
+			   vm->hsync_len + vm->hback_porch,
+			   HSTART_SW_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028,
+			   vm->hsync_len, HSW_SW_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028,
+			   0, HSP_SW_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3020,
+			   vm->hactive, HWIDTH_SW_DP_ENC0_P0_MASK);
+
+	/* vertical */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3014,
+			   mode.vtotal, VTOTAL_SW_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_301C,
+			   vm->vsync_len + vm->vback_porch,
+			   VSTART_SW_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C,
+			   vm->vsync_len, VSW_SW_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C,
+			   0, VSP_SW_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3024,
+			   vm->vactive, VHEIGHT_SW_DP_ENC0_P0_MASK);
+
+	/* horizontal */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3064,
+			   vm->hactive, HDE_NUM_LAST_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3154,
+			   mode.htotal, PGEN_HTOTAL_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3158,
+			   vm->hfront_porch,
+			   PGEN_HSYNC_RISING_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_315C,
+			   vm->hsync_len,
+			   PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3160,
+			   vm->hback_porch + vm->hsync_len,
+			   PGEN_HFDE_START_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3164,
+			   vm->hactive,
+			   PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK);
+
+	/* vertical */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3168,
+			   mode.vtotal,
+			   PGEN_VTOTAL_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_316C,
+			   vm->vfront_porch,
+			   PGEN_VSYNC_RISING_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3170,
+			   vm->vsync_len,
+			   PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3174,
+			   vm->vback_porch + vm->vsync_len,
+			   PGEN_VFDE_START_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3178,
+			   vm->vactive,
+			   PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK);
+}
+
+static int mtk_dp_set_color_format(struct mtk_dp *mtk_dp,
+				   enum dp_pixelformat color_format)
+{
+	u32 val;
+
+	/* update MISC0 */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034,
+			   color_format << DP_TEST_COLOR_FORMAT_SHIFT,
+			   DP_TEST_COLOR_FORMAT_MASK);
+
+	switch (color_format) {
+	case DP_PIXELFORMAT_YUV422:
+		val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422;
+		break;
+	case DP_PIXELFORMAT_RGB:
+		val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB;
+		break;
+	default:
+		drm_warn(mtk_dp->drm_dev, "Unsupported color format: %d\n",
+			 color_format);
+		return -EINVAL;
+	}
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
+			   val, PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK);
+	return 0;
+}
+
+static void mtk_dp_set_color_depth(struct mtk_dp *mtk_dp)
+{
+	/* Only support 8 bits currently */
+	/* Update MISC0 */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034,
+			   DP_MSA_MISC_8_BPC, DP_TEST_BIT_DEPTH_MASK);
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
+			   VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT,
+			   VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_config_mn_mode(struct mtk_dp *mtk_dp)
+{
+	/* 0: hw mode, 1: sw mode */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004,
+			   0, VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_set_sram_read_start(struct mtk_dp *mtk_dp, u32 val)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
+			   val, SRAM_START_READ_THRD_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_setup_encoder(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
+			   VIDEO_MN_GEN_EN_DP_ENC0_P0,
+			   VIDEO_MN_GEN_EN_DP_ENC0_P0);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3040,
+			   SDP_DOWN_CNT_DP_ENC0_P0_VAL,
+			   SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364,
+			   SDP_DOWN_CNT_IN_HBLANK_DP_ENC1_P0_VAL,
+			   SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3300,
+			   VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_VAL << 8,
+			   VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364,
+			   FIFO_READ_START_POINT_DP_ENC1_P0_VAL << 12,
+			   FIFO_READ_START_POINT_DP_ENC1_P0_MASK);
+	mtk_dp_write(mtk_dp, MTK_DP_ENC1_P0_3368, DP_ENC1_P0_3368_VAL);
+}
+
+static void mtk_dp_pg_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3038,
+			   enable ? VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK : 0,
+			   VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31B0,
+			   PGEN_PATTERN_SEL_VAL << 4, PGEN_PATTERN_SEL_MASK);
+}
+
+static void mtk_dp_aux_irq_clear(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_write(mtk_dp, MTK_DP_AUX_P0_3640, DP_AUX_P0_3640_VAL);
+}
+
+static void mtk_dp_aux_set_cmd(struct mtk_dp *mtk_dp, u8 cmd, u32 addr)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3644,
+			   cmd, MCU_REQUEST_COMMAND_AUX_TX_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3648,
+			   addr, MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_364C,
+			   addr >> 16, MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_aux_clear_fifo(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650,
+			   MCU_ACK_TRAN_COMPLETE_AUX_TX_P0,
+			   MCU_ACK_TRAN_COMPLETE_AUX_TX_P0 |
+			   PHY_FIFO_RST_AUX_TX_P0_MASK |
+			   MCU_REQ_DATA_NUM_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_aux_request_ready(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3630,
+			   AUX_TX_REQUEST_READY_AUX_TX_P0,
+			   AUX_TX_REQUEST_READY_AUX_TX_P0);
+}
+
+static void mtk_dp_aux_fill_write_fifo(struct mtk_dp *mtk_dp, u8 *buf,
+				       size_t length)
+{
+	mtk_dp_bulk_16bit_write(mtk_dp, MTK_DP_AUX_P0_3708, buf, length);
+}
+
+static void mtk_dp_aux_read_rx_fifo(struct mtk_dp *mtk_dp, u8 *buf,
+				    size_t length, int read_delay)
+{
+	int read_pos;
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620,
+			   0, AUX_RD_MODE_AUX_TX_P0_MASK);
+
+	for (read_pos = 0; read_pos < length; read_pos++) {
+		mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620,
+				   AUX_RX_FIFO_READ_PULSE_TX_P0,
+				   AUX_RX_FIFO_READ_PULSE_TX_P0);
+
+		/* Hardware needs time to update the data */
+		usleep_range(read_delay, read_delay * 2);
+		buf[read_pos] = (u8)(mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3620) &
+				     AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK);
+	}
+}
+
+static void mtk_dp_aux_set_length(struct mtk_dp *mtk_dp, size_t length)
+{
+	if (length > 0) {
+		mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650,
+				   (length - 1) << 12,
+				   MCU_REQ_DATA_NUM_AUX_TX_P0_MASK);
+		mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C,
+				   0,
+				   AUX_NO_LENGTH_AUX_TX_P0 |
+				   AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
+				   AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
+	} else {
+		mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C,
+				   AUX_NO_LENGTH_AUX_TX_P0,
+				   AUX_NO_LENGTH_AUX_TX_P0 |
+				   AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
+				   AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
+	}
+}
+
+static int mtk_dp_aux_wait_for_completion(struct mtk_dp *mtk_dp, bool is_read)
+{
+	int wait_reply = MTK_DP_AUX_WAIT_REPLY_COUNT;
+
+	while (--wait_reply) {
+		u32 aux_irq_status;
+
+		if (is_read) {
+			u32 fifo_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3618);
+
+			if (fifo_status &
+			    (AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK |
+			     AUX_RX_FIFO_FULL_AUX_TX_P0_MASK)) {
+				return 0;
+			}
+		}
+
+		aux_irq_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3640);
+		if (aux_irq_status & AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0)
+			return 0;
+
+		if (aux_irq_status & AUX_400US_TIMEOUT_IRQ_AUX_TX_P0)
+			return -ETIMEDOUT;
+
+		/* Give the hardware a chance to reach completion before retrying */
+		usleep_range(100, 500);
+	}
+
+	return -ETIMEDOUT;
+}
+
+static int mtk_dp_aux_do_transfer(struct mtk_dp *mtk_dp, bool is_read, u8 cmd,
+				  u32 addr, u8 *buf, size_t length)
+{
+	int ret;
+	u32 reply_cmd;
+
+	if (is_read && (length > DP_AUX_MAX_PAYLOAD_BYTES ||
+			(cmd == DP_AUX_NATIVE_READ && !length)))
+		return -EINVAL;
+
+	if (!is_read)
+		mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3704,
+				   AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0,
+				   AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0);
+
+	/* We need to clear fifo and irq before sending commands to the sink device. */
+	mtk_dp_aux_clear_fifo(mtk_dp);
+	mtk_dp_aux_irq_clear(mtk_dp);
+
+	mtk_dp_aux_set_cmd(mtk_dp, cmd, addr);
+	mtk_dp_aux_set_length(mtk_dp, length);
+
+	if (!is_read) {
+		if (length)
+			mtk_dp_aux_fill_write_fifo(mtk_dp, buf, length);
+
+		mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3704,
+				   AUX_TX_FIFO_WDATA_NEW_MODE_T_AUX_TX_P0_MASK,
+				   AUX_TX_FIFO_WDATA_NEW_MODE_T_AUX_TX_P0_MASK);
+	}
+
+	mtk_dp_aux_request_ready(mtk_dp);
+
+	/* Wait for feedback from sink device. */
+	ret = mtk_dp_aux_wait_for_completion(mtk_dp, is_read);
+
+	reply_cmd = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3624) &
+		    AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK;
+
+	if (ret || reply_cmd) {
+		u32 phy_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3628) &
+				 AUX_RX_PHY_STATE_AUX_TX_P0_MASK;
+		if (phy_status != AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE) {
+			drm_err(mtk_dp->drm_dev,
+				"AUX Rx Aux hang, need SW reset\n");
+			return -EIO;
+		}
+
+		return -ETIMEDOUT;
+	}
+
+	if (!length) {
+		mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C,
+				   0,
+				   AUX_NO_LENGTH_AUX_TX_P0 |
+				   AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
+				   AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
+	} else if (is_read) {
+		int read_delay;
+
+		if (cmd == (DP_AUX_I2C_READ | DP_AUX_I2C_MOT) ||
+		    cmd == DP_AUX_I2C_READ)
+			read_delay = 500;
+		else
+			read_delay = 100;
+
+		mtk_dp_aux_read_rx_fifo(mtk_dp, buf, length, read_delay);
+	}
+
+	return 0;
+}
+
+static void mtk_dp_set_swing_pre_emphasis(struct mtk_dp *mtk_dp, int lane_num,
+					  int swing_val, int preemphasis)
+{
+	u32 lane_shift = lane_num * DP_TX1_VOLT_SWING_SHIFT;
+
+	dev_dbg(mtk_dp->dev,
+		"link training: swing_val = 0x%x, pre-emphasis = 0x%x\n",
+		swing_val, preemphasis);
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
+			   swing_val << (DP_TX0_VOLT_SWING_SHIFT + lane_shift),
+			   DP_TX0_VOLT_SWING_MASK << lane_shift);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
+			   preemphasis << (DP_TX0_PRE_EMPH_SHIFT + lane_shift),
+			   DP_TX0_PRE_EMPH_MASK << lane_shift);
+}
+
+static void mtk_dp_reset_swing_pre_emphasis(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
+			   0,
+			   DP_TX0_VOLT_SWING_MASK |
+			   DP_TX1_VOLT_SWING_MASK |
+			   DP_TX2_VOLT_SWING_MASK |
+			   DP_TX3_VOLT_SWING_MASK |
+			   DP_TX0_PRE_EMPH_MASK |
+			   DP_TX1_PRE_EMPH_MASK |
+			   DP_TX2_PRE_EMPH_MASK |
+			   DP_TX3_PRE_EMPH_MASK);
+}
+
+static u32 mtk_dp_swirq_get_clear(struct mtk_dp *mtk_dp)
+{
+	u32 irq_status = mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_35D0) &
+			 SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK;
+
+	if (irq_status) {
+		mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8,
+				   irq_status, SW_IRQ_CLR_DP_TRANS_P0_MASK);
+		mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8,
+				   0, SW_IRQ_CLR_DP_TRANS_P0_MASK);
+	}
+
+	return irq_status;
+}
+
+static u32 mtk_dp_hwirq_get_clear(struct mtk_dp *mtk_dp)
+{
+	u32 irq_status = (mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3418) &
+			  IRQ_STATUS_DP_TRANS_P0_MASK) >> 12;
+
+	if (irq_status) {
+		mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418,
+				   irq_status, IRQ_CLR_DP_TRANS_P0_MASK);
+		mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418,
+				   0, IRQ_CLR_DP_TRANS_P0_MASK);
+	}
+
+	return irq_status;
+}
+
+static void mtk_dp_hwirq_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418,
+			   enable ? 0 :
+			   IRQ_MASK_DP_TRANS_P0_DISC_IRQ |
+			   IRQ_MASK_DP_TRANS_P0_CONN_IRQ |
+			   IRQ_MASK_DP_TRANS_P0_INT_IRQ,
+			   IRQ_MASK_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_initialize_settings(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_342C,
+			   XTAL_FREQ_DP_TRANS_P0_DEFAULT,
+			   XTAL_FREQ_DP_TRANS_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3540,
+			   FEC_CLOCK_EN_MODE_DP_TRANS_P0,
+			   FEC_CLOCK_EN_MODE_DP_TRANS_P0);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31EC,
+			   AUDIO_CH_SRC_SEL_DP_ENC0_P0,
+			   AUDIO_CH_SRC_SEL_DP_ENC0_P0);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C,
+			   0, SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_IRQ_MASK,
+			   IRQ_MASK_AUX_TOP_IRQ, IRQ_MASK_AUX_TOP_IRQ);
+}
+
+static void mtk_dp_initialize_hpd_detect_settings(struct mtk_dp *mtk_dp)
+{
+	u32 val;
+	/* Debounce threshold */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
+			   8, HPD_DEB_THD_DP_TRANS_P0_MASK);
+
+	val = (HPD_INT_THD_DP_TRANS_P0_LOWER_500US |
+	       HPD_INT_THD_DP_TRANS_P0_UPPER_1100US) << 4;
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
+			   val, HPD_INT_THD_DP_TRANS_P0_MASK);
+
+	/*
+	 * Connect threshold 1.5ms + 5 x 0.1ms = 2ms
+	 * Disconnect threshold 1.5ms + 5 x 0.1ms = 2ms
+	 */
+	val = (5 << 8) | (5 << 12);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
+			   val,
+			   HPD_DISC_THD_DP_TRANS_P0_MASK |
+			   HPD_CONN_THD_DP_TRANS_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3430,
+			   HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT,
+			   HPD_INT_THD_ECO_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_initialize_aux_settings(struct mtk_dp *mtk_dp)
+{
+	/* modify timeout threshold = 0x1595 */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_360C,
+			   AUX_TIMEOUT_THR_AUX_TX_P0_VAL,
+			   AUX_TIMEOUT_THR_AUX_TX_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3658,
+			   0, AUX_TX_OV_EN_AUX_TX_P0_MASK);
+	/* 25 for 26M */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3634,
+			   AUX_TX_OVER_SAMPLE_RATE_FOR_26M << 8,
+			   AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK);
+	/* 13 for 26M */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3614,
+			   AUX_RX_UI_CNT_THR_AUX_FOR_26M,
+			   AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_37C8,
+			   MTK_ATOP_EN_AUX_TX_P0,
+			   MTK_ATOP_EN_AUX_TX_P0);
+}
+
+static void mtk_dp_initialize_digital_settings(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C,
+			   0, VBID_VIDEO_MUTE_DP_ENC0_P0_MASK);
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3368,
+			   BS2BS_MODE_DP_ENC1_P0_VAL << 12,
+			   BS2BS_MODE_DP_ENC1_P0_MASK);
+
+	/* dp tx encoder reset all sw */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004,
+			   DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0,
+			   DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0);
+
+	/* Wait for sw reset to complete */
+	usleep_range(1000, 5000);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004,
+			   0, DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0);
+}
+
+static void mtk_dp_digital_sw_reset(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C,
+			   DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0,
+			   DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0);
+
+	/* Wait for sw reset to complete */
+	usleep_range(1000, 5000);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C,
+			   0, DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0);
+}
+
+static void mtk_dp_set_lanes(struct mtk_dp *mtk_dp, int lanes)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35F0,
+			   lanes == 0 ? 0 : DP_TRANS_DUMMY_RW_0,
+			   DP_TRANS_DUMMY_RW_0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000,
+			   lanes, LANE_NUM_DP_ENC0_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_34A4,
+			   lanes << 2, LANE_NUM_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_get_calibration_data(struct mtk_dp *mtk_dp)
+{
+	const struct mtk_dp_efuse_fmt *fmt;
+	struct device *dev = mtk_dp->dev;
+	struct nvmem_cell *cell;
+	u32 *cal_data = mtk_dp->cal_data;
+	u32 *buf;
+	int i;
+	size_t len;
+
+	cell = nvmem_cell_get(dev, "dp_calibration_data");
+	if (IS_ERR(cell)) {
+		dev_warn(dev, "Failed to get nvmem cell dp_calibration_data\n");
+		goto use_default_val;
+	}
+
+	buf = (u32 *)nvmem_cell_read(cell, &len);
+	nvmem_cell_put(cell);
+
+	if (IS_ERR(buf) || ((len / sizeof(u32)) != 4)) {
+		dev_warn(dev, "Failed to read nvmem_cell_read\n");
+
+		if (!IS_ERR(buf))
+			kfree(buf);
+
+		goto use_default_val;
+	}
+
+	for (i = 0; i < MTK_DP_CAL_MAX; i++) {
+		fmt = &mtk_dp_efuse_data[i];
+		cal_data[i] = (buf[fmt->idx] >> fmt->shift) & fmt->mask;
+
+		if (cal_data[i] < fmt->min_val || cal_data[i] > fmt->max_val) {
+			dev_warn(mtk_dp->dev, "Invalid efuse data, idx = %d\n", i);
+			kfree(buf);
+			goto use_default_val;
+		}
+	}
+	kfree(buf);
+
+	return;
+
+use_default_val:
+	dev_warn(mtk_dp->dev, "Use default calibration data\n");
+	for (i = 0; i < MTK_DP_CAL_MAX; i++)
+		cal_data[i] = mtk_dp_efuse_data[i].default_val;
+}
+
+static void mtk_dp_set_calibration_data(struct mtk_dp *mtk_dp)
+{
+	u32 *cal_data = mtk_dp->cal_data;
+
+	mtk_dp_update_bits(mtk_dp, DP_PHY_GLB_DPAUX_TX,
+			   cal_data[MTK_DP_CAL_CLKTX_IMPSE] << 20,
+			   RG_CKM_PT0_CKTX_IMPSEL);
+	mtk_dp_update_bits(mtk_dp, DP_PHY_GLB_BIAS_GEN_00,
+			   cal_data[MTK_DP_CAL_GLB_BIAS_TRIM] << 16,
+			   RG_XTP_GLB_BIAS_INTR_CTRL);
+	mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_0,
+			   cal_data[MTK_DP_CAL_LN_TX_IMPSEL_PMOS_0] << 12,
+			   RG_XTP_LN0_TX_IMPSEL_PMOS);
+	mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_0,
+			   cal_data[MTK_DP_CAL_LN_TX_IMPSEL_NMOS_0] << 16,
+			   RG_XTP_LN0_TX_IMPSEL_NMOS);
+	mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_1,
+			   cal_data[MTK_DP_CAL_LN_TX_IMPSEL_PMOS_1] << 12,
+			   RG_XTP_LN1_TX_IMPSEL_PMOS);
+	mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_1,
+			   cal_data[MTK_DP_CAL_LN_TX_IMPSEL_NMOS_1] << 16,
+			   RG_XTP_LN1_TX_IMPSEL_NMOS);
+	mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_2,
+			   cal_data[MTK_DP_CAL_LN_TX_IMPSEL_PMOS_2] << 12,
+			   RG_XTP_LN2_TX_IMPSEL_PMOS);
+	mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_2,
+			   cal_data[MTK_DP_CAL_LN_TX_IMPSEL_NMOS_2] << 16,
+			   RG_XTP_LN2_TX_IMPSEL_NMOS);
+	mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_3,
+			   cal_data[MTK_DP_CAL_LN_TX_IMPSEL_PMOS_3] << 12,
+			   RG_XTP_LN3_TX_IMPSEL_PMOS);
+	mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_3,
+			   cal_data[MTK_DP_CAL_LN_TX_IMPSEL_NMOS_3] << 16,
+			   RG_XTP_LN3_TX_IMPSEL_NMOS);
+}
+
+static int mtk_dp_phy_configure(struct mtk_dp *mtk_dp,
+				u32 link_rate, int lane_count)
+{
+	int ret;
+	union phy_configure_opts phy_opts = {
+		.dp = {
+			.link_rate = drm_dp_bw_code_to_link_rate(link_rate) / 100,
+			.set_rate = 1,
+			.lanes = lane_count,
+			.set_lanes = 1,
+			.ssc = mtk_dp->train_info.sink_ssc,
+		}
+	};
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, DP_PWR_STATE_BANDGAP,
+			   DP_PWR_STATE_MASK);
+
+	ret = phy_configure(mtk_dp->phy, &phy_opts);
+	if (ret)
+		return ret;
+
+	mtk_dp_set_calibration_data(mtk_dp);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+			   DP_PWR_STATE_BANDGAP_TPLL_LANE, DP_PWR_STATE_MASK);
+
+	return 0;
+}
+
+static void mtk_dp_set_idle_pattern(struct mtk_dp *mtk_dp, bool enable)
+{
+	u32 val = POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK |
+		  POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK |
+		  POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK |
+		  POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK;
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3580,
+			   enable ? val : 0, val);
+}
+
+static void mtk_dp_train_set_pattern(struct mtk_dp *mtk_dp, int pattern)
+{
+	/* TPS1 */
+	if (pattern == 1)
+		mtk_dp_set_idle_pattern(mtk_dp, false);
+
+	mtk_dp_update_bits(mtk_dp,
+			   MTK_DP_TRANS_P0_3400,
+			   pattern ? BIT(pattern - 1) << 12 : 0,
+			   PATTERN1_EN_DP_TRANS_P0_MASK |
+			   PATTERN2_EN_DP_TRANS_P0_MASK |
+			   PATTERN3_EN_DP_TRANS_P0_MASK |
+			   PATTERN4_EN_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_set_enhanced_frame_mode(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000,
+			   ENHANCED_FRAME_EN_DP_ENC0_P0,
+			   ENHANCED_FRAME_EN_DP_ENC0_P0);
+}
+
+static void mtk_dp_training_set_scramble(struct mtk_dp *mtk_dp, bool enable)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3404,
+			   enable ? DP_SCR_EN_DP_TRANS_P0_MASK : 0,
+			   DP_SCR_EN_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_video_mute(struct mtk_dp *mtk_dp, bool enable)
+{
+	struct arm_smccc_res res;
+	u32 val = VIDEO_MUTE_SEL_DP_ENC0_P0 |
+		  (enable ? VIDEO_MUTE_SW_DP_ENC0_P0 : 0);
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000,
+			   val,
+			   VIDEO_MUTE_SEL_DP_ENC0_P0 |
+			   VIDEO_MUTE_SW_DP_ENC0_P0);
+
+	arm_smccc_smc(MTK_DP_SIP_CONTROL_AARCH32,
+		      MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE, enable,
+		      0, 0, 0, 0, 0, &res);
+
+	dev_dbg(mtk_dp->dev, "smc cmd: 0x%x, p1: 0x%x, ret: 0x%lx-0x%lx\n",
+		MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE, enable, res.a0, res.a1);
+}
+
+static void mtk_dp_power_enable(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE,
+			   0, SW_RST_B_PHYD);
+
+	/* Wait for power enable */
+	usleep_range(10, 200);
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE,
+			   SW_RST_B_PHYD, SW_RST_B_PHYD);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+			   DP_PWR_STATE_BANDGAP_TPLL, DP_PWR_STATE_MASK);
+	mtk_dp_write(mtk_dp, MTK_DP_1040,
+		     RG_DPAUX_RX_VALID_DEGLITCH_EN | RG_XTP_GLB_CKDET_EN |
+		     RG_DPAUX_RX_EN);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_0034, 0, DA_CKM_CKTX0_EN_FORCE_EN);
+}
+
+static void mtk_dp_power_disable(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_write(mtk_dp, MTK_DP_TOP_PWR_STATE, 0);
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_0034,
+			   DA_CKM_CKTX0_EN_FORCE_EN, DA_CKM_CKTX0_EN_FORCE_EN);
+
+	/* Disable RX */
+	mtk_dp_write(mtk_dp, MTK_DP_1040, 0);
+	mtk_dp_write(mtk_dp, MTK_DP_TOP_MEM_PD,
+		     0x550 | FUSE_SEL | MEM_ISO_EN);
+}
+
+static void mtk_dp_initialize_priv_data(struct mtk_dp *mtk_dp)
+{
+	mtk_dp->train_info.link_rate = DP_LINK_BW_5_4;
+	mtk_dp->train_info.lane_count = mtk_dp->max_lanes;
+	mtk_dp->train_info.cable_plugged_in = false;
+
+	mtk_dp->info.format = DP_PIXELFORMAT_RGB;
+	memset(&mtk_dp->info.vm, 0, sizeof(struct videomode));
+}
+
+static void mtk_dp_setup_tu(struct mtk_dp *mtk_dp)
+{
+	u32 sram_read_start = min_t(u32, MTK_DP_TBC_BUF_READ_START_ADDR,
+				    mtk_dp->info.vm.hactive /
+				    mtk_dp->train_info.lane_count /
+				    MTK_DP_4P1T / MTK_DP_HDE /
+				    MTK_DP_PIX_PER_ADDR);
+	mtk_dp_set_sram_read_start(mtk_dp, sram_read_start);
+	mtk_dp_setup_encoder(mtk_dp);
+}
+
+static void mtk_dp_set_tx_out(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_setup_tu(mtk_dp);
+}
+
+static void mtk_dp_train_update_swing_pre(struct mtk_dp *mtk_dp, int lanes,
+					  u8 dpcd_adjust_req[2])
+{
+	int lane;
+
+	for (lane = 0; lane < lanes; ++lane) {
+		u8 val;
+		u8 swing;
+		u8 preemphasis;
+		int index = lane / 2;
+		int shift = lane % 2 ? DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : 0;
+
+		swing = (dpcd_adjust_req[index] >> shift) &
+			DP_ADJUST_VOLTAGE_SWING_LANE0_MASK;
+		preemphasis = ((dpcd_adjust_req[index] >> shift) &
+			       DP_ADJUST_PRE_EMPHASIS_LANE0_MASK) >>
+			      DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT;
+		val = swing << DP_TRAIN_VOLTAGE_SWING_SHIFT |
+		      preemphasis << DP_TRAIN_PRE_EMPHASIS_SHIFT;
+
+		if (swing == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)
+			val |= DP_TRAIN_MAX_SWING_REACHED;
+		if (preemphasis == 3)
+			val |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
+
+		mtk_dp_set_swing_pre_emphasis(mtk_dp, lane, swing, preemphasis);
+		drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_LANE0_SET + lane,
+				   val);
+	}
+}
+
+static void mtk_dp_pattern(struct mtk_dp *mtk_dp, bool is_tps1)
+{
+	int pattern;
+	unsigned int aux_offset;
+
+	if (is_tps1) {
+		pattern = 1;
+		aux_offset = DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_1;
+	} else {
+		aux_offset = mtk_dp->train_info.channel_eq_pattern;
+
+		switch (mtk_dp->train_info.channel_eq_pattern) {
+		case DP_TRAINING_PATTERN_4:
+			pattern = 4;
+			break;
+		case DP_TRAINING_PATTERN_3:
+			pattern = 3;
+			aux_offset |= DP_LINK_SCRAMBLING_DISABLE;
+			break;
+		case DP_TRAINING_PATTERN_2:
+		default:
+			pattern = 2;
+			aux_offset |= DP_LINK_SCRAMBLING_DISABLE;
+			break;
+		}
+	}
+
+	mtk_dp_train_set_pattern(mtk_dp, pattern);
+	drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_PATTERN_SET, aux_offset);
+}
+
+static int mtk_dp_train_setting(struct mtk_dp *mtk_dp, u8 target_link_rate,
+				u8 target_lane_count)
+{
+	int ret;
+
+	drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LINK_BW_SET, target_link_rate);
+	drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LANE_COUNT_SET,
+			   target_lane_count | DP_LANE_COUNT_ENHANCED_FRAME_EN);
+
+	if (mtk_dp->train_info.sink_ssc)
+		drm_dp_dpcd_writeb(&mtk_dp->aux, DP_DOWNSPREAD_CTRL,
+				   DP_SPREAD_AMP_0_5);
+
+	mtk_dp_set_lanes(mtk_dp, target_lane_count / 2);
+	ret = mtk_dp_phy_configure(mtk_dp, target_link_rate, target_lane_count);
+	if (ret)
+		return ret;
+
+	dev_dbg(mtk_dp->dev,
+		"Link train target_link_rate = 0x%x, target_lane_count = 0x%x\n",
+		target_link_rate, target_lane_count);
+
+	return 0;
+}
+
+static int mtk_dp_train_cr(struct mtk_dp *mtk_dp, u8 target_lane_count)
+{
+	u8 lane_adjust[2] = {};
+	u8 link_status[DP_LINK_STATUS_SIZE] = {};
+	u8 prev_lane_adjust = 0xff;
+	int train_retries = 0;
+	int voltage_retries = 0;
+
+	mtk_dp_pattern(mtk_dp, true);
+
+	/* In DP spec 1.4, the retry count of CR is defined as 10. */
+	do {
+		train_retries++;
+		if (!mtk_dp->train_info.cable_plugged_in) {
+			mtk_dp_train_set_pattern(mtk_dp, 0);
+			return -ENODEV;
+		}
+
+		drm_dp_dpcd_read(&mtk_dp->aux, DP_ADJUST_REQUEST_LANE0_1,
+				 lane_adjust, sizeof(lane_adjust));
+		mtk_dp_train_update_swing_pre(mtk_dp, target_lane_count,
+					      lane_adjust);
+
+		drm_dp_link_train_clock_recovery_delay(&mtk_dp->aux,
+						       mtk_dp->rx_cap);
+
+		/* check link status from sink device */
+		drm_dp_dpcd_read_link_status(&mtk_dp->aux, link_status);
+		if (drm_dp_clock_recovery_ok(link_status,
+					     target_lane_count)) {
+			dev_dbg(mtk_dp->dev, "Link train CR pass\n");
+			return 0;
+		}
+
+		/*
+		 * In DP spec 1.4, if current voltage level is the same
+		 * with previous voltage level, we need to retry 5 times.
+		 */
+		if (prev_lane_adjust == link_status[4]) {
+			voltage_retries++;
+			/*
+			 * Condition of CR fail:
+			 * 1. Failed to pass CR using the same voltage
+			 *    level over five times.
+			 * 2. Failed to pass CR when the current voltage
+			 *    level is the same with previous voltage
+			 *    level and reach max voltage level (3).
+			 */
+			if (voltage_retries > MTK_DP_TRAIN_VOLTAGE_LEVEL_RETRY ||
+			    (prev_lane_adjust & DP_ADJUST_VOLTAGE_SWING_LANE0_MASK) == 3) {
+				dev_dbg(mtk_dp->dev, "Link train CR fail\n");
+				break;
+			}
+		} else {
+			/*
+			 * If the voltage level is changed, we need to
+			 * re-calculate this retry count.
+			 */
+			voltage_retries = 0;
+		}
+		prev_lane_adjust = link_status[4];
+	} while (train_retries < MTK_DP_TRAIN_DOWNSCALE_RETRY);
+
+	/* Failed to train CR, and disable pattern. */
+	drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_PATTERN_SET,
+			   DP_TRAINING_PATTERN_DISABLE);
+	mtk_dp_train_set_pattern(mtk_dp, 0);
+
+	return -ETIMEDOUT;
+}
+
+static int mtk_dp_train_eq(struct mtk_dp *mtk_dp, u8 target_lane_count)
+{
+	u8 lane_adjust[2] = {};
+	u8 link_status[DP_LINK_STATUS_SIZE] = {};
+	int train_retries = 0;
+
+	mtk_dp_pattern(mtk_dp, false);
+
+	do {
+		train_retries++;
+		if (!mtk_dp->train_info.cable_plugged_in) {
+			mtk_dp_train_set_pattern(mtk_dp, 0);
+			return -ENODEV;
+		}
+
+		drm_dp_dpcd_read(&mtk_dp->aux, DP_ADJUST_REQUEST_LANE0_1,
+				 lane_adjust, sizeof(lane_adjust));
+		mtk_dp_train_update_swing_pre(mtk_dp, target_lane_count,
+					      lane_adjust);
+
+		drm_dp_link_train_channel_eq_delay(&mtk_dp->aux,
+						   mtk_dp->rx_cap);
+
+		/* check link status from sink device */
+		drm_dp_dpcd_read_link_status(&mtk_dp->aux, link_status);
+		if (drm_dp_channel_eq_ok(link_status, target_lane_count)) {
+			dev_dbg(mtk_dp->dev, "Link train EQ pass\n");
+
+			/* Training done, and disable pattern. */
+			drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_PATTERN_SET,
+					   DP_TRAINING_PATTERN_DISABLE);
+			mtk_dp_train_set_pattern(mtk_dp, 0);
+			return 0;
+		}
+		dev_dbg(mtk_dp->dev, "Link train EQ fail\n");
+	} while (train_retries < MTK_DP_TRAIN_DOWNSCALE_RETRY);
+
+	/* Failed to train EQ, and disable pattern. */
+	drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_PATTERN_SET,
+			   DP_TRAINING_PATTERN_DISABLE);
+	mtk_dp_train_set_pattern(mtk_dp, 0);
+
+	return -ETIMEDOUT;
+}
+
+static int mtk_dp_parse_capabilities(struct mtk_dp *mtk_dp)
+{
+	u8 val;
+	ssize_t ret;
+
+	drm_dp_read_dpcd_caps(&mtk_dp->aux, mtk_dp->rx_cap);
+
+	if (drm_dp_tps4_supported(mtk_dp->rx_cap))
+		mtk_dp->train_info.channel_eq_pattern = DP_TRAINING_PATTERN_4;
+	else if (drm_dp_tps3_supported(mtk_dp->rx_cap))
+		mtk_dp->train_info.channel_eq_pattern = DP_TRAINING_PATTERN_3;
+	else
+		mtk_dp->train_info.channel_eq_pattern = DP_TRAINING_PATTERN_2;
+
+	mtk_dp->train_info.sink_ssc = drm_dp_max_downspread(mtk_dp->rx_cap);
+
+	ret = drm_dp_dpcd_readb(&mtk_dp->aux, DP_MSTM_CAP, &val);
+	if (ret < 1) {
+		drm_err(mtk_dp->drm_dev, "Read mstm cap failed\n");
+		return ret == 0 ? -EIO : ret;
+	}
+
+	if (val & DP_MST_CAP) {
+		/* Clear DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0 */
+		ret = drm_dp_dpcd_readb(&mtk_dp->aux,
+					DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0,
+					&val);
+		if (ret < 1) {
+			drm_err(mtk_dp->drm_dev, "Read irq vector failed\n");
+			return ret == 0 ? -EIO : ret;
+		}
+
+		if (val)
+			drm_dp_dpcd_writeb(&mtk_dp->aux,
+					   DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0,
+					   val);
+	}
+
+	return 0;
+}
+
+static void mtk_dp_train_change_mode(struct mtk_dp *mtk_dp)
+{
+	phy_reset(mtk_dp->phy);
+	mtk_dp_reset_swing_pre_emphasis(mtk_dp);
+}
+
+static int mtk_dp_training(struct mtk_dp *mtk_dp)
+{
+	int ret;
+	u8 lane_count, link_rate, train_limit, max_link_rate;
+
+	link_rate = min_t(u8, mtk_dp->max_linkrate,
+			  mtk_dp->rx_cap[DP_MAX_LINK_RATE]);
+	max_link_rate = link_rate;
+	lane_count = min_t(u8, mtk_dp->max_lanes,
+			   drm_dp_max_lane_count(mtk_dp->rx_cap));
+
+	/*
+	 * TPS are generated by the hardware pattern generator. From the
+	 * hardware setting we need to disable this scramble setting before
+	 * use the TPS pattern generator.
+	 */
+	mtk_dp_training_set_scramble(mtk_dp, false);
+
+	for (train_limit = 6; train_limit > 0; train_limit--) {
+		mtk_dp_train_change_mode(mtk_dp);
+
+		ret = mtk_dp_train_setting(mtk_dp, link_rate, lane_count);
+		if (ret)
+			return ret;
+
+		ret = mtk_dp_train_cr(mtk_dp, lane_count);
+		if (ret == -ENODEV) {
+			return ret;
+		} else if (ret) {
+			/* reduce link rate */
+			switch (link_rate) {
+			case DP_LINK_BW_1_62:
+				lane_count = lane_count / 2;
+				link_rate = max_link_rate;
+				if (lane_count == 0)
+					return -EIO;
+				break;
+			case DP_LINK_BW_2_7:
+				link_rate = DP_LINK_BW_1_62;
+				break;
+			case DP_LINK_BW_5_4:
+				link_rate = DP_LINK_BW_2_7;
+				break;
+			case DP_LINK_BW_8_1:
+				link_rate = DP_LINK_BW_5_4;
+				break;
+			default:
+				return -EINVAL;
+			};
+			continue;
+		}
+
+		ret = mtk_dp_train_eq(mtk_dp, lane_count);
+		if (ret == -ENODEV) {
+			return ret;
+		} else if (ret) {
+			/* reduce lane count */
+			if (lane_count == 0)
+				return -EIO;
+			lane_count /= 2;
+			continue;
+		}
+
+		/* if we can run to this, training is done. */
+		break;
+	}
+
+	if (train_limit == 0)
+		return -ETIMEDOUT;
+
+	mtk_dp->train_info.link_rate = link_rate;
+	mtk_dp->train_info.lane_count = lane_count;
+
+	/*
+	 * After training done, we need to output normal stream instead of TPS,
+	 * so we need to enable scramble.
+	 */
+	mtk_dp_training_set_scramble(mtk_dp, true);
+	mtk_dp_set_enhanced_frame_mode(mtk_dp);
+
+	return 0;
+}
+
+static void mtk_dp_video_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+	/* the mute sequence is different between enable and disable */
+	if (enable) {
+		mtk_dp_msa_bypass_enable(mtk_dp, false);
+		mtk_dp_pg_enable(mtk_dp, false);
+		mtk_dp_set_tx_out(mtk_dp);
+		mtk_dp_video_mute(mtk_dp, false);
+	} else {
+		mtk_dp_video_mute(mtk_dp, true);
+		mtk_dp_pg_enable(mtk_dp, true);
+		mtk_dp_msa_bypass_enable(mtk_dp, true);
+	}
+}
+
+static int mtk_dp_video_config(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_config_mn_mode(mtk_dp);
+	mtk_dp_set_msa(mtk_dp);
+	mtk_dp_set_color_depth(mtk_dp);
+	return mtk_dp_set_color_format(mtk_dp, mtk_dp->info.format);
+}
+
+static void mtk_dp_init_port(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_set_idle_pattern(mtk_dp, true);
+	mtk_dp_initialize_priv_data(mtk_dp);
+
+	mtk_dp_initialize_settings(mtk_dp);
+	mtk_dp_initialize_aux_settings(mtk_dp);
+	mtk_dp_initialize_digital_settings(mtk_dp);
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3690,
+			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0,
+			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0);
+	mtk_dp_initialize_hpd_detect_settings(mtk_dp);
+
+	mtk_dp_digital_sw_reset(mtk_dp);
+}
+
+static irqreturn_t mtk_dp_hpd_event_thread(int hpd, void *dev)
+{
+	struct mtk_dp *mtk_dp = dev;
+	unsigned long flags;
+	u32 status;
+
+	spin_lock_irqsave(&mtk_dp->irq_thread_lock, flags);
+	status = mtk_dp->irq_thread_handle;
+	mtk_dp->irq_thread_handle = 0;
+	spin_unlock_irqrestore(&mtk_dp->irq_thread_lock, flags);
+
+	if (status & MTK_DP_THREAD_CABLE_STATE_CHG)
+		drm_helper_hpd_irq_event(mtk_dp->bridge.dev);
+
+	if (status & MTK_DP_THREAD_HPD_EVENT)
+		dev_dbg(mtk_dp->dev, "Receive IRQ from sink devices\n");
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t mtk_dp_hpd_event(int hpd, void *dev)
+{
+	struct mtk_dp *mtk_dp = dev;
+	bool cable_sta_chg = false;
+	unsigned long flags;
+	u32 irq_status = mtk_dp_swirq_get_clear(mtk_dp) |
+			 mtk_dp_hwirq_get_clear(mtk_dp);
+
+	if (!irq_status)
+		return IRQ_HANDLED;
+
+	spin_lock_irqsave(&mtk_dp->irq_thread_lock, flags);
+
+	if (irq_status & MTK_DP_HPD_INTERRUPT)
+		mtk_dp->irq_thread_handle |= MTK_DP_THREAD_HPD_EVENT;
+
+	/* Cable state is changed. */
+	if (irq_status != MTK_DP_HPD_INTERRUPT) {
+		mtk_dp->irq_thread_handle |= MTK_DP_THREAD_CABLE_STATE_CHG;
+		cable_sta_chg = true;
+	}
+
+	spin_unlock_irqrestore(&mtk_dp->irq_thread_lock, flags);
+
+	if (cable_sta_chg) {
+		if (!!(mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3414) &
+		       HPD_DB_DP_TRANS_P0_MASK))
+			mtk_dp->train_info.cable_plugged_in = true;
+		else
+			mtk_dp->train_info.cable_plugged_in = false;
+	}
+
+	return IRQ_WAKE_THREAD;
+}
+
+static int mtk_dp_dt_parse(struct mtk_dp *mtk_dp,
+			   struct platform_device *pdev)
+{
+	struct device_node *endpoint;
+	struct device *dev = &pdev->dev;
+	int ret;
+	void __iomem *base;
+	u32 linkrate;
+	int len;
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	mtk_dp->regs = devm_regmap_init_mmio(dev, base, &mtk_dp_regmap_config);
+	if (IS_ERR(mtk_dp->regs))
+		return PTR_ERR(mtk_dp->regs);
+
+	endpoint = of_graph_get_endpoint_by_regs(pdev->dev.of_node, 1, -1);
+	len = of_property_count_elems_of_size(endpoint,
+					      "data-lanes", sizeof(u32));
+	if (len < 0 || len > 4 || len == 3) {
+		dev_err(dev, "invalid data lane size: %d\n", len);
+		return -EINVAL;
+	}
+
+	mtk_dp->max_lanes = len;
+
+	ret = device_property_read_u32(dev, "max-linkrate-mhz", &linkrate);
+	if (ret) {
+		dev_err(dev, "failed to read max linkrate: %d\n", ret);
+		return ret;
+	}
+
+	mtk_dp->max_linkrate = drm_dp_link_rate_to_bw_code(linkrate * 100);
+
+	return 0;
+}
+
+static struct edid *mtk_dp_get_edid(struct drm_bridge *bridge,
+				    struct drm_connector *connector)
+{
+	struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+	bool enabled = mtk_dp->enabled;
+	struct edid *new_edid = NULL;
+
+	if (!enabled) {
+		drm_bridge_chain_pre_enable(bridge);
+
+		/* power on aux */
+		mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+				   DP_PWR_STATE_BANDGAP_TPLL_LANE,
+				   DP_PWR_STATE_MASK);
+
+		/* power on panel */
+		drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+		usleep_range(2000, 5000);
+	}
+
+	new_edid = drm_get_edid(connector, &mtk_dp->aux.ddc);
+
+	/*
+	 * Parse capability here to let atomic_get_input_bus_fmts and
+	 * mode_valid use the capability to calculate sink bitrates.
+	 */
+	if (mtk_dp_parse_capabilities(mtk_dp)) {
+		drm_err(mtk_dp->drm_dev, "Can't parse capabilities\n");
+		new_edid = NULL;
+	}
+
+	if (!enabled) {
+		/* power off panel */
+		drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D3);
+		usleep_range(2000, 3000);
+
+		/* power off aux */
+		mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+				   DP_PWR_STATE_BANDGAP_TPLL,
+				   DP_PWR_STATE_MASK);
+
+		drm_bridge_chain_post_disable(bridge);
+	}
+
+	return new_edid;
+}
+
+static ssize_t mtk_dp_aux_transfer(struct drm_dp_aux *mtk_aux,
+				   struct drm_dp_aux_msg *msg)
+{
+	struct mtk_dp *mtk_dp;
+	bool is_read;
+	u8 request;
+	size_t accessed_bytes = 0;
+	int ret;
+
+	mtk_dp = container_of(mtk_aux, struct mtk_dp, aux);
+
+	if (!mtk_dp->train_info.cable_plugged_in) {
+		ret = -EAGAIN;
+		goto err;
+	}
+
+	switch (msg->request) {
+	case DP_AUX_I2C_MOT:
+	case DP_AUX_I2C_WRITE:
+	case DP_AUX_NATIVE_WRITE:
+	case DP_AUX_I2C_WRITE_STATUS_UPDATE:
+	case DP_AUX_I2C_WRITE_STATUS_UPDATE | DP_AUX_I2C_MOT:
+		request = msg->request & ~DP_AUX_I2C_WRITE_STATUS_UPDATE;
+		is_read = false;
+		break;
+	case DP_AUX_I2C_READ:
+	case DP_AUX_NATIVE_READ:
+	case DP_AUX_I2C_READ | DP_AUX_I2C_MOT:
+		request = msg->request;
+		is_read = true;
+		break;
+	default:
+		drm_err(mtk_aux->drm_dev, "invalid aux cmd = %d\n",
+			msg->request);
+		ret = -EINVAL;
+		goto err;
+	}
+
+	do {
+		size_t to_access = min_t(size_t, DP_AUX_MAX_PAYLOAD_BYTES,
+					 msg->size - accessed_bytes);
+
+		ret = mtk_dp_aux_do_transfer(mtk_dp, is_read, request,
+					     msg->address + accessed_bytes,
+					     msg->buffer + accessed_bytes,
+					     to_access);
+
+		if (ret) {
+			drm_info(mtk_dp->drm_dev,
+				 "Failed to do AUX transfer: %d\n", ret);
+			goto err;
+		}
+		accessed_bytes += to_access;
+	} while (accessed_bytes < msg->size);
+
+	msg->reply = DP_AUX_NATIVE_REPLY_ACK | DP_AUX_I2C_REPLY_ACK;
+	return msg->size;
+err:
+	msg->reply = DP_AUX_NATIVE_REPLY_NACK | DP_AUX_I2C_REPLY_NACK;
+	return ret;
+}
+
+static int mtk_dp_poweron(struct mtk_dp *mtk_dp)
+{
+	int ret;
+
+	ret = phy_init(mtk_dp->phy);
+	if (ret) {
+		dev_err(mtk_dp->dev, "Failed to initialize phy: %d\n", ret);
+		return ret;
+	}
+
+	mtk_dp_init_port(mtk_dp);
+	mtk_dp_power_enable(mtk_dp);
+
+	return 0;
+}
+
+static void mtk_dp_poweroff(struct mtk_dp *mtk_dp)
+{
+	mtk_dp_power_disable(mtk_dp);
+	phy_exit(mtk_dp->phy);
+}
+
+static int mtk_dp_bridge_attach(struct drm_bridge *bridge,
+				enum drm_bridge_attach_flags flags)
+{
+	struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+	int ret;
+
+	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+		dev_err(mtk_dp->dev, "Driver does not provide a connector!");
+		return -EINVAL;
+	}
+
+	mtk_dp->aux.drm_dev = bridge->dev;
+	ret = drm_dp_aux_register(&mtk_dp->aux);
+	if (ret) {
+		dev_err(mtk_dp->dev,
+			"failed to register DP AUX channel: %d\n", ret);
+		return ret;
+	}
+
+	ret = mtk_dp_poweron(mtk_dp);
+	if (ret)
+		goto err_aux_register;
+
+	if (mtk_dp->next_bridge) {
+		ret = drm_bridge_attach(bridge->encoder, mtk_dp->next_bridge,
+					&mtk_dp->bridge, flags);
+		if (ret) {
+			drm_warn(mtk_dp->drm_dev,
+				 "Failed to attach external bridge: %d\n", ret);
+			goto err_bridge_attach;
+		}
+	}
+
+	mtk_dp->drm_dev = bridge->dev;
+
+	mtk_dp_hwirq_enable(mtk_dp, true);
+
+	return 0;
+
+err_bridge_attach:
+	mtk_dp_poweroff(mtk_dp);
+err_aux_register:
+	drm_dp_aux_unregister(&mtk_dp->aux);
+	return ret;
+}
+
+static void mtk_dp_bridge_detach(struct drm_bridge *bridge)
+{
+	struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+
+	mtk_dp_hwirq_enable(mtk_dp, false);
+	mtk_dp->drm_dev = NULL;
+	mtk_dp_poweroff(mtk_dp);
+	drm_dp_aux_unregister(&mtk_dp->aux);
+}
+
+static void mtk_dp_bridge_atomic_enable(struct drm_bridge *bridge,
+					struct drm_bridge_state *old_state)
+{
+	struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+	int ret;
+
+	mtk_dp->conn = drm_atomic_get_new_connector_for_encoder(old_state->base.state,
+								bridge->encoder);
+	if (!mtk_dp->conn) {
+		drm_err(mtk_dp->drm_dev,
+			"Can't enable bridge as connector is missing\n");
+		return;
+	}
+
+	/* power on aux */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+			   DP_PWR_STATE_BANDGAP_TPLL_LANE,
+			   DP_PWR_STATE_MASK);
+
+	if (mtk_dp->train_info.cable_plugged_in) {
+		drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+		usleep_range(2000, 5000);
+	}
+
+	/* Training */
+	ret = mtk_dp_training(mtk_dp);
+	if (ret) {
+		drm_err(mtk_dp->drm_dev, "Training failed, %d\n", ret);
+		goto power_off_aux;
+	}
+
+	ret = mtk_dp_video_config(mtk_dp);
+	if (ret)
+		goto power_off_aux;
+
+	mtk_dp_video_enable(mtk_dp, true);
+
+	mtk_dp->enabled = true;
+
+	return;
+power_off_aux:
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+			   DP_PWR_STATE_BANDGAP_TPLL,
+			   DP_PWR_STATE_MASK);
+}
+
+static void mtk_dp_bridge_atomic_disable(struct drm_bridge *bridge,
+					 struct drm_bridge_state *old_state)
+{
+	struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+
+	mtk_dp->enabled = false;
+	mtk_dp_video_enable(mtk_dp, false);
+
+	if (mtk_dp->train_info.cable_plugged_in) {
+		drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D3);
+		usleep_range(2000, 3000);
+	}
+
+	/* power off aux */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+			   DP_PWR_STATE_BANDGAP_TPLL,
+			   DP_PWR_STATE_MASK);
+
+	/* Ensure the sink is muted */
+	msleep(20);
+}
+
+static enum drm_mode_status
+mtk_dp_bridge_mode_valid(struct drm_bridge *bridge,
+			 const struct drm_display_info *info,
+			 const struct drm_display_mode *mode)
+{
+	struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+	u32 bpp = info->color_formats & DRM_COLOR_FORMAT_YCBCR422 ? 16 : 24;
+	u32 rate = min_t(u32, drm_dp_max_link_rate(mtk_dp->rx_cap) *
+			      drm_dp_max_lane_count(mtk_dp->rx_cap),
+			 drm_dp_bw_code_to_link_rate(mtk_dp->max_linkrate) *
+			 mtk_dp->max_lanes);
+
+	if (rate < mode->clock * bpp / 8)
+		return MODE_CLOCK_HIGH;
+
+	return MODE_OK;
+}
+
+static u32 *mtk_dp_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
+						     struct drm_bridge_state *bridge_state,
+						     struct drm_crtc_state *crtc_state,
+						     struct drm_connector_state *conn_state,
+						     unsigned int *num_output_fmts)
+{
+	u32 *output_fmts;
+
+	*num_output_fmts = 0;
+	output_fmts = kmalloc(sizeof(*output_fmts), GFP_KERNEL);
+	if (!output_fmts)
+		return NULL;
+	*num_output_fmts = 1;
+	output_fmts[0] = MEDIA_BUS_FMT_FIXED;
+	return output_fmts;
+}
+
+static const u32 mt8195_input_fmts[] = {
+	MEDIA_BUS_FMT_RGB888_1X24,
+	MEDIA_BUS_FMT_YUV8_1X24,
+	MEDIA_BUS_FMT_YUYV8_1X16,
+};
+
+static u32 *mtk_dp_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
+						    struct drm_bridge_state *bridge_state,
+						    struct drm_crtc_state *crtc_state,
+						    struct drm_connector_state *conn_state,
+						    u32 output_fmt,
+						    unsigned int *num_input_fmts)
+{
+	u32 *input_fmts;
+	struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+	struct drm_display_mode *mode = &crtc_state->adjusted_mode;
+	struct drm_display_info *display_info =
+		&conn_state->connector->display_info;
+	u32 rate = min_t(u32, drm_dp_max_link_rate(mtk_dp->rx_cap) *
+			      drm_dp_max_lane_count(mtk_dp->rx_cap),
+			 drm_dp_bw_code_to_link_rate(mtk_dp->max_linkrate) *
+			 mtk_dp->max_lanes);
+
+	*num_input_fmts = 0;
+
+	/*
+	 * If the linkrate is smaller than datarate of RGB888, larger than
+	 * datarate of YUV422 and sink device supports YUV422, we output YUV422
+	 * format. Use this condition, we can support more resolution.
+	 */
+	if ((rate < (mode->clock * 24 / 8)) &&
+	    (rate > (mode->clock * 16 / 8)) &&
+	    (display_info->color_formats & DRM_COLOR_FORMAT_YCBCR422)) {
+		input_fmts = kcalloc(1, sizeof(*input_fmts), GFP_KERNEL);
+		if (!input_fmts)
+			return NULL;
+		*num_input_fmts = 1;
+		input_fmts[0] = MEDIA_BUS_FMT_YUYV8_1X16;
+	} else {
+		input_fmts = kcalloc(ARRAY_SIZE(mt8195_input_fmts),
+				     sizeof(*input_fmts),
+				     GFP_KERNEL);
+		if (!input_fmts)
+			return NULL;
+
+		*num_input_fmts = ARRAY_SIZE(mt8195_input_fmts);
+		memcpy(input_fmts, mt8195_input_fmts, sizeof(mt8195_input_fmts));
+	}
+
+	return input_fmts;
+}
+
+static int mtk_dp_bridge_atomic_check(struct drm_bridge *bridge,
+				      struct drm_bridge_state *bridge_state,
+				      struct drm_crtc_state *crtc_state,
+				      struct drm_connector_state *conn_state)
+{
+	struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+	struct drm_crtc *crtc = conn_state->crtc;
+	unsigned int input_bus_format;
+
+	input_bus_format = bridge_state->input_bus_cfg.format;
+
+	dev_dbg(mtk_dp->dev, "input format 0x%04x, output format 0x%04x\n",
+		bridge_state->input_bus_cfg.format,
+		 bridge_state->output_bus_cfg.format);
+
+	if (input_bus_format == MEDIA_BUS_FMT_YUYV8_1X16)
+		mtk_dp->info.format = DP_PIXELFORMAT_YUV422;
+	else
+		mtk_dp->info.format = DP_PIXELFORMAT_RGB;
+
+	if (!crtc) {
+		drm_err(mtk_dp->drm_dev,
+			"Can't enable bridge as connector state doesn't have a crtc\n");
+		return -EINVAL;
+	}
+
+	drm_display_mode_to_videomode(&crtc_state->adjusted_mode, &mtk_dp->info.vm);
+
+	return 0;
+}
+
+static const struct drm_bridge_funcs mtk_dp_bridge_funcs = {
+	.atomic_check = mtk_dp_bridge_atomic_check,
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+	.atomic_get_output_bus_fmts = mtk_dp_bridge_atomic_get_output_bus_fmts,
+	.atomic_get_input_bus_fmts = mtk_dp_bridge_atomic_get_input_bus_fmts,
+	.atomic_reset = drm_atomic_helper_bridge_reset,
+	.attach = mtk_dp_bridge_attach,
+	.detach = mtk_dp_bridge_detach,
+	.atomic_enable = mtk_dp_bridge_atomic_enable,
+	.atomic_disable = mtk_dp_bridge_atomic_disable,
+	.mode_valid = mtk_dp_bridge_mode_valid,
+	.get_edid = mtk_dp_get_edid,
+};
+
+static int mtk_dp_probe(struct platform_device *pdev)
+{
+	struct mtk_dp *mtk_dp;
+	struct device *dev = &pdev->dev;
+	int ret, irq_num;
+
+	mtk_dp = devm_kzalloc(dev, sizeof(*mtk_dp), GFP_KERNEL);
+	if (!mtk_dp)
+		return -ENOMEM;
+
+	mtk_dp->dev = dev;
+
+	irq_num = platform_get_irq(pdev, 0);
+	if (irq_num < 0)
+		return dev_err_probe(dev, irq_num,
+				     "failed to request dp irq resource\n");
+
+	mtk_dp->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
+	if (IS_ERR(mtk_dp->next_bridge))
+		return dev_err_probe(dev, PTR_ERR(mtk_dp->next_bridge),
+				     "Failed to get bridge\n");
+
+	ret = mtk_dp_dt_parse(mtk_dp, pdev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to parse dt\n");
+
+	drm_dp_aux_init(&mtk_dp->aux);
+	mtk_dp->aux.name = "aux_mtk_dp";
+	mtk_dp->aux.transfer = mtk_dp_aux_transfer;
+
+	spin_lock_init(&mtk_dp->irq_thread_lock);
+
+	ret = devm_request_threaded_irq(dev, irq_num, mtk_dp_hpd_event,
+					mtk_dp_hpd_event_thread,
+					IRQ_TYPE_LEVEL_HIGH, dev_name(dev),
+					mtk_dp);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "failed to request mediatek dptx irq\n");
+
+	platform_set_drvdata(pdev, mtk_dp);
+
+	mtk_dp->phy_dev = platform_device_register_data(dev, "mediatek-dp-phy",
+							PLATFORM_DEVID_AUTO,
+							&mtk_dp->regs,
+							sizeof(struct regmap *));
+	if (IS_ERR(mtk_dp->phy_dev))
+		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy_dev),
+				     "Failed to create device mediatek-dp-phy\n");
+
+	mtk_dp_get_calibration_data(mtk_dp);
+
+	mtk_dp->phy = devm_phy_get(&mtk_dp->phy_dev->dev, "dp");
+
+	if (IS_ERR(mtk_dp->phy)) {
+		platform_device_unregister(mtk_dp->phy_dev);
+		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy),
+				     "Failed to get phy\n");
+	}
+
+	mtk_dp->bridge.funcs = &mtk_dp_bridge_funcs;
+	mtk_dp->bridge.of_node = dev->of_node;
+
+	mtk_dp->bridge.ops =
+		DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_HPD;
+	mtk_dp->bridge.type = DRM_MODE_CONNECTOR_eDP;
+
+	drm_bridge_add(&mtk_dp->bridge);
+
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
+
+	return 0;
+}
+
+static int mtk_dp_remove(struct platform_device *pdev)
+{
+	struct mtk_dp *mtk_dp = platform_get_drvdata(pdev);
+
+	pm_runtime_put(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+	drm_bridge_remove(&mtk_dp->bridge);
+	platform_device_unregister(mtk_dp->phy_dev);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int mtk_dp_suspend(struct device *dev)
+{
+	struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+
+	mtk_dp_power_disable(mtk_dp);
+	mtk_dp_hwirq_enable(mtk_dp, false);
+	pm_runtime_put_sync(dev);
+
+	return 0;
+}
+
+static int mtk_dp_resume(struct device *dev)
+{
+	struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+
+	pm_runtime_get_sync(dev);
+	mtk_dp_init_port(mtk_dp);
+	mtk_dp_hwirq_enable(mtk_dp, true);
+	mtk_dp_power_enable(mtk_dp);
+
+	return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(mtk_dp_pm_ops, mtk_dp_suspend, mtk_dp_resume);
+
+static const struct of_device_id mtk_dp_of_match[] = {
+	{ .compatible = "mediatek,mt8195-edp-tx" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, mtk_dp_of_match);
+
+struct platform_driver mtk_dp_driver = {
+	.probe = mtk_dp_probe,
+	.remove = mtk_dp_remove,
+	.driver = {
+		.name = "mediatek-drm-dp",
+		.of_match_table = mtk_dp_of_match,
+		.pm = &mtk_dp_pm_ops,
+	},
+};
+
+module_platform_driver(mtk_dp_driver);
+
+MODULE_AUTHOR("Jitao Shi <jitao.shi@mediatek.com>");
+MODULE_AUTHOR("Markus Schneider-Pargmann <msp@baylibre.com>");
+MODULE_AUTHOR("Bo-Chen Chen <rex-bc.chen@mediatek.com>");
+MODULE_DESCRIPTION("MediaTek DisplayPort Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/mediatek/mtk_dp_reg.h b/drivers/gpu/drm/mediatek/mtk_dp_reg.h
new file mode 100644
index 0000000000000..3f01ba44871fc
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_dp_reg.h
@@ -0,0 +1,305 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019-2022 MediaTek Inc.
+ * Copyright (c) 2022 BayLibre
+ */
+#ifndef _MTK_DP_REG_H_
+#define _MTK_DP_REG_H_
+
+#define SEC_OFFSET	0x4000
+
+#define MTK_DP_HPD_DISCONNECT		BIT(1)
+#define MTK_DP_HPD_CONNECT		BIT(2)
+#define MTK_DP_HPD_INTERRUPT		BIT(3)
+
+/* offset: 0x0 */
+#define DP_PHY_GLB_BIAS_GEN_00		0x0
+#define RG_XTP_GLB_BIAS_INTR_CTRL		GENMASK(20, 16)
+#define DP_PHY_GLB_DPAUX_TX		0x8
+#define RG_CKM_PT0_CKTX_IMPSEL			GENMASK(23, 20)
+#define MTK_DP_0034			0x34
+#define DA_XTP_GLB_CKDET_EN_FORCE_VAL		BIT(15)
+#define DA_XTP_GLB_CKDET_EN_FORCE_EN		BIT(14)
+#define DA_CKM_INTCKTX_EN_FORCE_VAL		BIT(13)
+#define DA_CKM_INTCKTX_EN_FORCE_EN		BIT(12)
+#define DA_CKM_CKTX0_EN_FORCE_VAL		BIT(11)
+#define DA_CKM_CKTX0_EN_FORCE_EN		BIT(10)
+#define DA_CKM_XTAL_CK_FORCE_VAL		BIT(9)
+#define DA_CKM_XTAL_CK_FORCE_EN			BIT(8)
+#define DA_CKM_BIAS_LPF_EN_FORCE_VAL		BIT(7)
+#define DA_CKM_BIAS_LPF_EN_FORCE_EN		BIT(6)
+#define DA_CKM_BIAS_EN_FORCE_VAL		BIT(5)
+#define DA_CKM_BIAS_EN_FORCE_EN			BIT(4)
+#define DA_XTP_GLB_AVD10_ON_FORCE_VAL		BIT(3)
+#define DA_XTP_GLB_AVD10_ON_FORCE		BIT(2)
+#define DA_XTP_GLB_LDO_EN_FORCE_VAL		BIT(1)
+#define DA_XTP_GLB_LDO_EN_FORCE_EN		BIT(0)
+#define DP_PHY_LANE_TX_0		0x104
+#define RG_XTP_LN0_TX_IMPSEL_PMOS		GENMASK(15, 12)
+#define RG_XTP_LN0_TX_IMPSEL_NMOS		GENMASK(19, 16)
+#define DP_PHY_LANE_TX_1		0x204
+#define RG_XTP_LN1_TX_IMPSEL_PMOS		GENMASK(15, 12)
+#define RG_XTP_LN1_TX_IMPSEL_NMOS		GENMASK(19, 16)
+#define DP_PHY_LANE_TX_2		0x304
+#define RG_XTP_LN2_TX_IMPSEL_PMOS		GENMASK(15, 12)
+#define RG_XTP_LN2_TX_IMPSEL_NMOS		GENMASK(19, 16)
+#define DP_PHY_LANE_TX_3		0x404
+#define RG_XTP_LN3_TX_IMPSEL_PMOS		GENMASK(15, 12)
+#define RG_XTP_LN3_TX_IMPSEL_NMOS		GENMASK(19, 16)
+#define MTK_DP_1040			0x1040
+#define RG_DPAUX_RX_VALID_DEGLITCH_EN		BIT(2)
+#define RG_XTP_GLB_CKDET_EN			BIT(1)
+#define RG_DPAUX_RX_EN				BIT(0)
+
+/* offset: TOP_OFFSET (0x2000) */
+#define MTK_DP_TOP_PWR_STATE		0x2000
+#define DP_PWR_STATE_MASK			GENMASK(1, 0)
+#define DP_PWR_STATE_BANDGAP			BIT(0)
+#define DP_PWR_STATE_BANDGAP_TPLL		BIT(1)
+#define DP_PWR_STATE_BANDGAP_TPLL_LANE		GENMASK(1, 0)
+#define MTK_DP_TOP_SWING_EMP		0x2004
+#define DP_TX0_VOLT_SWING_MASK			GENMASK(1, 0)
+#define DP_TX0_VOLT_SWING_SHIFT			0
+#define DP_TX0_PRE_EMPH_MASK			GENMASK(3, 2)
+#define DP_TX0_PRE_EMPH_SHIFT			2
+#define DP_TX1_VOLT_SWING_MASK			GENMASK(9, 8)
+#define DP_TX1_VOLT_SWING_SHIFT			8
+#define DP_TX1_PRE_EMPH_MASK			GENMASK(11, 10)
+#define DP_TX2_VOLT_SWING_MASK			GENMASK(17, 16)
+#define DP_TX2_PRE_EMPH_MASK			GENMASK(19, 18)
+#define DP_TX3_VOLT_SWING_MASK			GENMASK(25, 24)
+#define DP_TX3_PRE_EMPH_MASK			GENMASK(27, 26)
+#define MTK_DP_TOP_RESET_AND_PROBE	0x2020
+#define SW_RST_B_PHYD				BIT(4)
+#define MTK_DP_TOP_IRQ_MASK		0x202c
+#define IRQ_MASK_AUX_TOP_IRQ			BIT(2)
+#define MTK_DP_TOP_MEM_PD		0x2038
+#define MEM_ISO_EN				BIT(0)
+#define FUSE_SEL				BIT(2)
+
+/* offset: ENC0_OFFSET (0x3000) */
+#define MTK_DP_ENC0_P0_3000			0x3000
+#define LANE_NUM_DP_ENC0_P0_MASK			GENMASK(1, 0)
+#define VIDEO_MUTE_SW_DP_ENC0_P0			BIT(2)
+#define VIDEO_MUTE_SEL_DP_ENC0_P0			BIT(3)
+#define ENHANCED_FRAME_EN_DP_ENC0_P0			BIT(4)
+#define MTK_DP_ENC0_P0_3004			0x3004
+#define VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK		BIT(8)
+#define DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0		BIT(9)
+#define MTK_DP_ENC0_P0_3010			0x3010
+#define HTOTAL_SW_DP_ENC0_P0_MASK			GENMASK(15, 0)
+#define MTK_DP_ENC0_P0_3014			0x3014
+#define VTOTAL_SW_DP_ENC0_P0_MASK			GENMASK(15, 0)
+#define MTK_DP_ENC0_P0_3018			0x3018
+#define HSTART_SW_DP_ENC0_P0_MASK			GENMASK(15, 0)
+#define MTK_DP_ENC0_P0_301C			0x301c
+#define VSTART_SW_DP_ENC0_P0_MASK			GENMASK(15, 0)
+#define MTK_DP_ENC0_P0_3020			0x3020
+#define HWIDTH_SW_DP_ENC0_P0_MASK			GENMASK(15, 0)
+#define MTK_DP_ENC0_P0_3024			0x3024
+#define VHEIGHT_SW_DP_ENC0_P0_MASK			GENMASK(15, 0)
+#define MTK_DP_ENC0_P0_3028			0x3028
+#define HSW_SW_DP_ENC0_P0_MASK				GENMASK(14, 0)
+#define HSP_SW_DP_ENC0_P0_MASK				BIT(15)
+#define MTK_DP_ENC0_P0_302C			0x302c
+#define VSW_SW_DP_ENC0_P0_MASK				GENMASK(14, 0)
+#define VSP_SW_DP_ENC0_P0_MASK				BIT(15)
+#define MTK_DP_ENC0_P0_3030			0x3030
+#define HTOTAL_SEL_DP_ENC0_P0				BIT(0)
+#define VTOTAL_SEL_DP_ENC0_P0				BIT(1)
+#define HSTART_SEL_DP_ENC0_P0				BIT(2)
+#define VSTART_SEL_DP_ENC0_P0				BIT(3)
+#define HWIDTH_SEL_DP_ENC0_P0				BIT(4)
+#define VHEIGHT_SEL_DP_ENC0_P0				BIT(5)
+#define HSP_SEL_DP_ENC0_P0				BIT(6)
+#define HSW_SEL_DP_ENC0_P0				BIT(7)
+#define VSP_SEL_DP_ENC0_P0				BIT(8)
+#define VSW_SEL_DP_ENC0_P0				BIT(9)
+#define MTK_DP_ENC0_P0_3034			0x3034
+#define MTK_DP_ENC0_P0_3038			0x3038
+#define VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK		BIT(11)
+#define MTK_DP_ENC0_P0_303C			0x303c
+#define SRAM_START_READ_THRD_DP_ENC0_P0_MASK		GENMASK(5, 0)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK		GENMASK(10, 8)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_16BIT		(0 << 8)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_12BIT		(1 << 8)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_10BIT		(2 << 8)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT		(3 << 8)
+#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_6BIT		(4 << 8)
+#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK		GENMASK(14, 12)
+#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB		(0 << 12)
+#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422		(1 << 12)
+#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR420		(2 << 12)
+#define VIDEO_MN_GEN_EN_DP_ENC0_P0			BIT(15)
+#define MTK_DP_ENC0_P0_3040			0x3040
+#define SDP_DOWN_CNT_DP_ENC0_P0_VAL			0x20
+#define SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK		GENMASK(11, 0)
+#define MTK_DP_ENC0_P0_304C			0x304c
+#define VBID_VIDEO_MUTE_DP_ENC0_P0_MASK			BIT(2)
+#define SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK		BIT(8)
+#define MTK_DP_ENC0_P0_3064			0x3064
+#define HDE_NUM_LAST_DP_ENC0_P0_MASK			GENMASK(15, 0)
+#define MTK_DP_ENC0_P0_3154			0x3154
+#define PGEN_HTOTAL_DP_ENC0_P0_MASK			GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_3158			0x3158
+#define PGEN_HSYNC_RISING_DP_ENC0_P0_MASK		GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_315C			0x315c
+#define PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK		GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_3160			0x3160
+#define PGEN_HFDE_START_DP_ENC0_P0_MASK			GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_3164			0x3164
+#define PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK		GENMASK(13, 0)
+#define MTK_DP_ENC0_P0_3168			0x3168
+#define PGEN_VTOTAL_DP_ENC0_P0_MASK			GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_316C			0x316c
+#define PGEN_VSYNC_RISING_DP_ENC0_P0_MASK		GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_3170			0x3170
+#define PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK		GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_3174			0x3174
+#define PGEN_VFDE_START_DP_ENC0_P0_MASK			GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_3178			0x3178
+#define PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK		GENMASK(12, 0)
+#define MTK_DP_ENC0_P0_31B0			0x31b0
+#define PGEN_PATTERN_SEL_VAL				4
+#define PGEN_PATTERN_SEL_MASK				GENMASK(6, 4)
+#define MTK_DP_ENC0_P0_31EC			0x31ec
+#define AUDIO_CH_SRC_SEL_DP_ENC0_P0			BIT(4)
+#define ISRC1_HB3_DP_ENC0_P0_MASK			GENMASK(15, 8)
+
+/* offset: ENC1_OFFSET (0x3200) */
+#define MTK_DP_ENC1_P0_3300			0x3300
+#define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_VAL		2
+#define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK		GENMASK(9, 8)
+#define MTK_DP_ENC1_P0_3364			0x3364
+#define SDP_DOWN_CNT_IN_HBLANK_DP_ENC1_P0_VAL		0x20
+#define SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK	GENMASK(11, 0)
+#define FIFO_READ_START_POINT_DP_ENC1_P0_VAL		4
+#define FIFO_READ_START_POINT_DP_ENC1_P0_MASK		GENMASK(15, 12)
+#define MTK_DP_ENC1_P0_3368			0x3368
+#define VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0	BIT(0)
+#define VIDEO_STABLE_CNT_THRD_DP_ENC1_P0		BIT(4)
+#define SDP_DP13_EN_DP_ENC1_P0				BIT(8)
+#define BS2BS_MODE_DP_ENC1_P0				BIT(12)
+#define BS2BS_MODE_DP_ENC1_P0_MASK			GENMASK(13, 12)
+#define BS2BS_MODE_DP_ENC1_P0_VAL			1
+#define DP_ENC1_P0_3368_VAL				(VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0 | \
+							 VIDEO_STABLE_CNT_THRD_DP_ENC1_P0 | \
+							 SDP_DP13_EN_DP_ENC1_P0 | \
+							 BS2BS_MODE_DP_ENC1_P0)
+
+/* offset: TRANS_OFFSET (0x3400) */
+#define MTK_DP_TRANS_P0_3400				0x3400
+#define PATTERN1_EN_DP_TRANS_P0_MASK				BIT(12)
+#define PATTERN2_EN_DP_TRANS_P0_MASK				BIT(13)
+#define PATTERN3_EN_DP_TRANS_P0_MASK				BIT(14)
+#define PATTERN4_EN_DP_TRANS_P0_MASK				BIT(15)
+#define MTK_DP_TRANS_P0_3404				0x3404
+#define DP_SCR_EN_DP_TRANS_P0_MASK				BIT(0)
+#define MTK_DP_TRANS_P0_340C				0x340c
+#define DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0		BIT(13)
+#define MTK_DP_TRANS_P0_3410				0x3410
+#define HPD_DEB_THD_DP_TRANS_P0_MASK				GENMASK(3, 0)
+#define HPD_INT_THD_DP_TRANS_P0_MASK				GENMASK(7, 4)
+#define HPD_INT_THD_DP_TRANS_P0_LOWER_500US			(2 << 4)
+#define HPD_INT_THD_DP_TRANS_P0_UPPER_1100US			(2 << 6)
+#define HPD_DISC_THD_DP_TRANS_P0_MASK				GENMASK(11, 8)
+#define HPD_CONN_THD_DP_TRANS_P0_MASK				GENMASK(15, 12)
+#define MTK_DP_TRANS_P0_3414				0x3414
+#define HPD_DB_DP_TRANS_P0_MASK					BIT(2)
+#define MTK_DP_TRANS_P0_3418				0x3418
+#define IRQ_CLR_DP_TRANS_P0_MASK				GENMASK(3, 0)
+#define IRQ_MASK_DP_TRANS_P0_MASK				GENMASK(7, 4)
+#define IRQ_MASK_DP_TRANS_P0_DISC_IRQ				(BIT(1) << 4)
+#define IRQ_MASK_DP_TRANS_P0_CONN_IRQ				(BIT(2) << 4)
+#define IRQ_MASK_DP_TRANS_P0_INT_IRQ				(BIT(3) << 4)
+#define IRQ_STATUS_DP_TRANS_P0_MASK				GENMASK(15, 12)
+#define MTK_DP_TRANS_P0_342C				0x342c
+#define XTAL_FREQ_DP_TRANS_P0_DEFAULT				(BIT(0) | BIT(3) | BIT(5) | BIT(6))
+#define XTAL_FREQ_DP_TRANS_P0_MASK				GENMASK(7, 0)
+#define MTK_DP_TRANS_P0_3430				0x3430
+#define HPD_INT_THD_ECO_DP_TRANS_P0_MASK			GENMASK(1, 0)
+#define HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT		BIT(1)
+#define MTK_DP_TRANS_P0_34A4				0x34a4
+#define LANE_NUM_DP_TRANS_P0_MASK				GENMASK(3, 2)
+#define MTK_DP_TRANS_P0_3540				0x3540
+#define FEC_EN_DP_TRANS_P0_MASK					BIT(0)
+#define FEC_CLOCK_EN_MODE_DP_TRANS_P0				BIT(3)
+#define MTK_DP_TRANS_P0_3580				0x3580
+#define POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK		BIT(8)
+#define POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK		BIT(9)
+#define POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK		BIT(10)
+#define POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK		BIT(11)
+#define MTK_DP_TRANS_P0_35C8				0x35c8
+#define SW_IRQ_CLR_DP_TRANS_P0_MASK				GENMASK(15, 0)
+#define SW_IRQ_STATUS_DP_TRANS_P0_MASK				GENMASK(15, 0)
+#define MTK_DP_TRANS_P0_35D0				0x35d0
+#define SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK			GENMASK(15, 0)
+#define MTK_DP_TRANS_P0_35F0				0x35f0
+#define DP_TRANS_DUMMY_RW_0					BIT(3)
+#define DP_TRANS_DUMMY_RW_0_MASK				GENMASK(3, 2)
+
+/* offset: AUX_OFFSET (0x3600) */
+#define MTK_DP_AUX_P0_360C			0x360c
+#define AUX_TIMEOUT_THR_AUX_TX_P0_MASK			GENMASK(12, 0)
+#define AUX_TIMEOUT_THR_AUX_TX_P0_VAL			0x1595
+#define MTK_DP_AUX_P0_3614			0x3614
+#define AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK		GENMASK(6, 0)
+#define AUX_RX_UI_CNT_THR_AUX_FOR_26M			13
+#define MTK_DP_AUX_P0_3618			0x3618
+#define AUX_RX_FIFO_FULL_AUX_TX_P0_MASK			BIT(9)
+#define AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK	GENMASK(3, 0)
+#define MTK_DP_AUX_P0_3620			0x3620
+#define AUX_RD_MODE_AUX_TX_P0_MASK			BIT(9)
+#define AUX_RX_FIFO_READ_PULSE_TX_P0			BIT(8)
+#define AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK		GENMASK(7, 0)
+#define MTK_DP_AUX_P0_3624			0x3624
+#define AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK		GENMASK(3, 0)
+#define MTK_DP_AUX_P0_3628			0x3628
+#define AUX_RX_PHY_STATE_AUX_TX_P0_MASK			GENMASK(9, 0)
+#define AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE		BIT(0)
+#define MTK_DP_AUX_P0_362C			0x362c
+#define AUX_NO_LENGTH_AUX_TX_P0				BIT(0)
+#define AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK		BIT(1)
+#define AUX_RESERVED_RW_0_AUX_TX_P0_MASK		GENMASK(15, 2)
+#define MTK_DP_AUX_P0_3630			0x3630
+#define AUX_TX_REQUEST_READY_AUX_TX_P0			BIT(3)
+#define MTK_DP_AUX_P0_3634			0x3634
+#define AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK		GENMASK(15, 8)
+#define AUX_TX_OVER_SAMPLE_RATE_FOR_26M			25
+#define MTK_DP_AUX_P0_3640			0x3640
+#define AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0		BIT(6)
+#define AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0		BIT(5)
+#define AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0		BIT(4)
+#define AUX_RX_CMD_RECV_IRQ_AUX_TX_P0			BIT(3)
+#define AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0			BIT(2)
+#define AUX_RX_DATA_RECV_IRQ_AUX_TX_P0			BIT(1)
+#define AUX_400US_TIMEOUT_IRQ_AUX_TX_P0			BIT(0)
+#define DP_AUX_P0_3640_VAL				(AUX_400US_TIMEOUT_IRQ_AUX_TX_P0 | \
+							 AUX_RX_DATA_RECV_IRQ_AUX_TX_P0 | \
+							 AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0 | \
+							 AUX_RX_CMD_RECV_IRQ_AUX_TX_P0 | \
+							 AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0 | \
+							 AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0 | \
+							 AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0)
+#define MTK_DP_AUX_P0_3644			0x3644
+#define MCU_REQUEST_COMMAND_AUX_TX_P0_MASK		GENMASK(3, 0)
+#define MTK_DP_AUX_P0_3648			0x3648
+#define MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK		GENMASK(15, 0)
+#define MTK_DP_AUX_P0_364C			0x364c
+#define MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK		GENMASK(3, 0)
+#define MTK_DP_AUX_P0_3650			0x3650
+#define MCU_REQ_DATA_NUM_AUX_TX_P0_MASK			GENMASK(15, 12)
+#define PHY_FIFO_RST_AUX_TX_P0_MASK			BIT(9)
+#define MCU_ACK_TRAN_COMPLETE_AUX_TX_P0			BIT(8)
+#define MTK_DP_AUX_P0_3658			0x3658
+#define AUX_TX_OV_EN_AUX_TX_P0_MASK			BIT(0)
+#define MTK_DP_AUX_P0_3690			0x3690
+#define RX_REPLY_COMPLETE_MODE_AUX_TX_P0		BIT(8)
+#define MTK_DP_AUX_P0_3704			0x3704
+#define AUX_TX_FIFO_WDATA_NEW_MODE_T_AUX_TX_P0_MASK	BIT(1)
+#define AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0		BIT(2)
+#define MTK_DP_AUX_P0_3708			0x3708
+#define MTK_DP_AUX_P0_37C8			0x37c8
+#define MTK_ATOP_EN_AUX_TX_P0				BIT(0)
+
+#endif /*_MTK_DP_REG_H_*/