arm64: dts: Add mediatek SoC mt8195 and evaluation board

Add basic chip support for mediatek mt8195.

Signed-off-by: Seiya Wang <seiya.wang@mediatek.com>
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220411022724.11005-3-tinghan.shen@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/Makefile

@@ -38,4 +38,5 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-kukui-krane-sku0.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-kukui-krane-sku176.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-pumpkin.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-evb.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt8195-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8516-pumpkin.dtb

arch/arm64/boot/dts/mediatek/mt8195-evb.dts

@@ -0,0 +1,181 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Seiya Wang <seiya.wang@mediatek.com>
+ */
+/dts-v1/;
+#include "mt8195.dtsi"
+
+/ {
+	model = "MediaTek MT8195 evaluation board";
+	compatible = "mediatek,mt8195-evb", "mediatek,mt8195";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:921600n8";
+	};
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0 0x40000000 0 0x80000000>;
+	};
+};
+
+&auxadc {
+	status = "okay";
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pin>;
+	clock-frequency = <100000>;
+	status = "okay";
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pin>;
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
+&i2c4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c4_pin>;
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
+&i2c6 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c6_pin>;
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
+&nor_flash {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&nor_pins_default>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+	};
+};
+
+&pio {
+	i2c0_pin: i2c0-pins {
+		pins {
+			pinmux = <PINMUX_GPIO8__FUNC_SDA0>,
+				 <PINMUX_GPIO9__FUNC_SCL0>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+			mediatek,drive-strength-adv = <0>;
+			drive-strength = <6>;
+		};
+	};
+
+	i2c1_pin: i2c1-pins {
+		pins {
+			pinmux = <PINMUX_GPIO10__FUNC_SDA1>,
+				 <PINMUX_GPIO11__FUNC_SCL1>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+			mediatek,drive-strength-adv = <0>;
+			drive-strength = <6>;
+		};
+	};
+
+	i2c4_pin: i2c4-pins {
+		pins {
+			pinmux = <PINMUX_GPIO16__FUNC_SDA4>,
+				 <PINMUX_GPIO17__FUNC_SCL4>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+			mediatek,drive-strength-adv = <7>;
+		};
+	};
+
+	i2c6_pin: i2c6-pins {
+		pins {
+			pinmux = <PINMUX_GPIO25__FUNC_SDA6>,
+				 <PINMUX_GPIO26__FUNC_SCL6>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+	};
+
+	i2c7_pin: i2c7-pins {
+		pins {
+			pinmux = <PINMUX_GPIO27__FUNC_SCL7>,
+				 <PINMUX_GPIO28__FUNC_SDA7>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+	};
+
+	nor_pins_default: nor-pins {
+		pins0 {
+			pinmux = <PINMUX_GPIO142__FUNC_SPINOR_IO0>,
+				 <PINMUX_GPIO141__FUNC_SPINOR_CK>,
+				 <PINMUX_GPIO143__FUNC_SPINOR_IO1>;
+			bias-pull-down;
+		};
+
+		pins1 {
+			pinmux = <PINMUX_GPIO140__FUNC_SPINOR_CS>,
+				 <PINMUX_GPIO130__FUNC_SPINOR_IO2>,
+				 <PINMUX_GPIO131__FUNC_SPINOR_IO3>;
+			bias-pull-up;
+		};
+	};
+
+	uart0_pin: uart0-pins {
+		pins {
+			pinmux = <PINMUX_GPIO98__FUNC_UTXD0>,
+				 <PINMUX_GPIO99__FUNC_URXD0>;
+		};
+	};
+};
+
+&u3phy0 {
+	status="okay";
+};
+
+&u3phy1 {
+	status="okay";
+};
+
+&u3phy2 {
+	status="okay";
+};
+
+&u3phy3 {
+	status="okay";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pin>;
+	status = "okay";
+};
+
+&xhci0 {
+	status = "okay";
+};
+
+&xhci1 {
+	status = "okay";
+};
+
+&xhci2 {
+	status = "okay";
+};
+
+&xhci3 {
+	/* This controller is connected with a BT device.
+	 * Disable usb2 lpm to prevent known issues.
+	 */
+	usb2-lpm-disable;
+	status = "okay";
+};