dt-bindings: display: mediatek: Add binding for MT8195 HDMI-TX v2

Add a binding for the HDMI TX v2 Encoder found in MediaTek MT8195 and MT8188 SoCs. This fully supports the HDMI Specification 2.0b, hence it provides support for 3D-HDMI, Polarity inversion, up to 16 bits Deep Color, color spaces including RGB444, YCBCR420/422/444 (ITU601/ITU709) and xvYCC, with output resolutions up to 3840x2160p@60Hz. Moreover, it also supports HDCP 1.4 and 2.3, Variable Refresh Rate (VRR) and Consumer Electronics Control (CEC). This IP also includes support for HDMI Audio, including IEC60958 and IEC61937 SPDIF, 8-channel PCM, DSD, and other lossless audio according to HDMI 2.0. Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://patchwork.kernel.org/project/dri-devel/patch/20250415104321.51149-3-angelogioacchino.delregno@collabora.com/ Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
2026-05-30 01:53:29 +02:00 · 2025-04-15 12:43:00 +02:00 · 2025-04-15 12:43:00 +02:00 · 8745e78c8a
commit 8745e78c8a
parent 182f7443e5
1 changed files with 151 additions and 0 deletions
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8195-hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8195-hdmi.yaml
@ -0,0 +1,151 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/mediatek/mediatek,mt8195-hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MT8195 series HDMI-TX Encoder
+
+maintainers:
+  - AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+  - CK Hu <ck.hu@mediatek.com>
+
+description:
+  The MediaTek HDMI-TX v2 encoder can generate HDMI format data based on
+  the HDMI Specification 2.0b.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt8188-hdmi-tx
+      - mediatek,mt8195-hdmi-tx
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: HDMI Peripheral Bus (APB) clock
+      - description: HDCP and HDMI_TOP clock
+      - description: HDCP, HDMI_TOP and HDMI Audio reference clock
+      - description: VPP HDMI Split clock
+
+  clock-names:
+    items:
+      - const: bus
+      - const: hdcp
+      - const: hdcp24m
+      - const: hdmi-split
+
+  i2c:
+    type: object
+    $ref: /schemas/display/mediatek/mediatek,mt8195-hdmi-ddc.yaml
+    unevaluatedProperties: false
+    description: HDMI DDC I2C controller
+
+  phys:
+    maxItems: 1
+    description: PHY providing clocking TMDS and pixel to controller
+
+  phy-names:
+    items:
+      - const: hdmi
+
+  power-domains:
+    maxItems: 1
+
+  '#sound-dai-cells':
+    const: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Input port, usually connected to the output port of a DPI
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Output port that must be connected either to the input port of
+          a HDMI connector node containing a ddc-i2c-bus, or to the input
+          port of an attached bridge chip, such as a SlimPort transmitter.
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - power-domains
+  - phys
+  - phy-names
+  - ports
+
+allOf:
+  - $ref: /schemas/sound/dai-common.yaml#
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8195-clk.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/power/mt8195-power.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        hdmi@1c300000 {
+            compatible = "mediatek,mt8195-hdmi-tx";
+            reg = <0 0x1c300000 0 0x1000>;
+            clocks = <&topckgen CLK_TOP_HDMI_APB>,
+                     <&topckgen CLK_TOP_HDCP>,
+                     <&topckgen CLK_TOP_HDCP_24M>,
+                     <&vppsys1 CLK_VPP1_VPP_SPLIT_HDMI>;
+            clock-names = "bus", "hdcp", "hdcp24m", "hdmi-split";
+            interrupts = <GIC_SPI 677 IRQ_TYPE_LEVEL_HIGH 0>;
+            phys = <&hdmi_phy>;
+            phy-names = "hdmi";
+            power-domains = <&spm MT8195_POWER_DOMAIN_HDMI_TX>;
+            pinctrl-names = "default";
+            pinctrl-0 = <&hdmi_pins>;
+            #sound-dai-cells = <1>;
+
+            hdmitx_ddc: i2c {
+                compatible = "mediatek,mt8195-hdmi-ddc";
+                clocks = <&clk26m>;
+            };
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+
+                    hdmi_in: endpoint {
+                        remote-endpoint = <&dpi1_out>;
+                    };
+                };
+
+                port@1 {
+                    reg = <1>;
+
+                    hdmi_out: endpoint {
+                        remote-endpoint = <&hdmi_connector_in>;
+                    };
+                };
+            };
+        };
+    };