dt-bindings: display: rockchip: Add schema for RK3588 HDMI TX Controller

Rockchip RK3588 SoC integrates the Synopsys DesignWare HDMI 2.1
Quad-Pixel (QP) TX controller IP.

Since this is a new IP block, quite different from those used in the
previous generations of Rockchip SoCs, add a dedicated binding file.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241016-b4-rk3588-bridge-upstream-v10-2-87ef92a6d14e@collabora.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>

Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml

@@ -0,0 +1,188 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip DW HDMI QP TX Encoder
+
+maintainers:
+  - Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
+
+description: |
+  Rockchip RK3588 SoC integrates the Synopsys DesignWare HDMI QP TX controller
+  IP and a HDMI/eDP TX Combo PHY based on a Samsung IP block, providing the
+  following features, among others:
+
+  * Fixed Rate Link (FRL)
+  * Display Stream Compression (DSC)
+  * 4K@120Hz and 8K@60Hz video modes
+  * Variable Refresh Rate (VRR) including Quick Media Switching (QMS)
+  * Fast Vactive (FVA)
+  * SCDC I2C DDC access
+  * Multi-stream audio
+  * Enhanced Audio Return Channel (EARC)
+
+allOf:
+  - $ref: /schemas/sound/dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - rockchip,rk3588-dw-hdmi-qp
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Peripheral/APB bus clock
+      - description: EARC RX biphase clock
+      - description: Reference clock
+      - description: Audio interface clock
+      - description: TMDS/FRL link clock
+      - description: Video datapath clock
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: earc
+      - const: ref
+      - const: aud
+      - const: hdp
+      - const: hclk_vo1
+
+  interrupts:
+    items:
+      - description: AVP Unit interrupt
+      - description: CEC interrupt
+      - description: eARC RX interrupt
+      - description: Main Unit interrupt
+      - description: HPD interrupt
+
+  interrupt-names:
+    items:
+      - const: avp
+      - const: cec
+      - const: earc
+      - const: main
+      - const: hpd
+
+  phys:
+    maxItems: 1
+    description: The HDMI/eDP PHY
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Video port for RGB/YUV input.
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Video port for HDMI/eDP output.
+
+    required:
+      - port@0
+      - port@1
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 2
+
+  reset-names:
+    items:
+      - const: ref
+      - const: hdp
+
+  "#sound-dai-cells":
+    const: 0
+
+  rockchip,grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Some HDMI QP related data is accessed through SYS GRF regs.
+
+  rockchip,vo-grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Additional HDMI QP related data is accessed through VO GRF regs.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+  - interrupt-names
+  - phys
+  - ports
+  - resets
+  - reset-names
+  - rockchip,grf
+  - rockchip,vo-grf
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rockchip,rk3588-cru.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/power/rk3588-power.h>
+    #include <dt-bindings/reset/rockchip,rk3588-cru.h>
+
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      hdmi@fde80000 {
+        compatible = "rockchip,rk3588-dw-hdmi-qp";
+        reg = <0x0 0xfde80000 0x0 0x20000>;
+        clocks = <&cru PCLK_HDMITX0>,
+                 <&cru CLK_HDMITX0_EARC>,
+                 <&cru CLK_HDMITX0_REF>,
+                 <&cru MCLK_I2S5_8CH_TX>,
+                 <&cru CLK_HDMIHDP0>,
+                 <&cru HCLK_VO1>;
+        clock-names = "pclk", "earc", "ref", "aud", "hdp", "hclk_vo1";
+        interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH 0>,
+                     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH 0>,
+                     <GIC_SPI 171 IRQ_TYPE_LEVEL_HIGH 0>,
+                     <GIC_SPI 172 IRQ_TYPE_LEVEL_HIGH 0>,
+                     <GIC_SPI 360 IRQ_TYPE_LEVEL_HIGH 0>;
+        interrupt-names = "avp", "cec", "earc", "main", "hpd";
+        phys = <&hdptxphy_hdmi0>;
+        power-domains = <&power RK3588_PD_VO1>;
+        resets = <&cru SRST_HDMITX0_REF>, <&cru SRST_HDMIHDP0>;
+        reset-names = "ref", "hdp";
+        rockchip,grf = <&sys_grf>;
+        rockchip,vo-grf = <&vo1_grf>;
+        #sound-dai-cells = <0>;
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+            reg = <0>;
+
+            hdmi0_in_vp0: endpoint {
+              remote-endpoint = <&vp0_out_hdmi0>;
+            };
+          };
+
+          port@1 {
+            reg = <1>;
+
+            hdmi0_out_con0: endpoint {
+              remote-endpoint = <&hdmi_con0_in>;
+            };
+          };
+        };
+      };
+    };