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From:   Guillaume Ranquet <granquet@baylibre.com>
Date:   Mon, 19 Sep 2022 18:56:04 +0200
Subject: [PATCH v1 06/17] dt-bindings: mediatek: set the hdmi to be compatible with
 syscon
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To:     Vinod Koul <vkoul@kernel.org>, Stephen Boyd <sboyd@kernel.org>,
        David Airlie <airlied@linux.ie>,
        Rob Herring <robh+dt@kernel.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Daniel Vetter <daniel@ffwll.ch>,
        Chunfeng Yun <chunfeng.yun@mediatek.com>,
        CK Hu <ck.hu@mediatek.com>, Jitao shi <jitao.shi@mediatek.com>,
        Chun-Kuang Hu <chunkuang.hu@kernel.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Kishon Vijay Abraham I <kishon@ti.com>,
        Matthias Brugger <matthias.bgg@gmail.com>
Cc:     linux-mediatek@lists.infradead.org,
        dri-devel@lists.freedesktop.org,
        Pablo Sun <pablo.sun@mediatek.com>, linux-clk@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Mattijs Korpershoek <mkorpershoek@baylibre.com>,
        linux-arm-kernel@lists.infradead.org,
        linux-phy@lists.infradead.org,
        Guillaume Ranquet <granquet@baylibre.com>,
        devicetree@vger.kernel.org
Precedence: bulk

In order to share register with a dedicated ddc driver, set the hdmi
compatible to syscon.

Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
index abb231a0694b..86297b7eb7f7 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
@@ -16,12 +16,14 @@ description: |
 
 properties:
   compatible:
-    enum:
-      - mediatek,mt2701-hdmi
-      - mediatek,mt7623-hdmi
-      - mediatek,mt8167-hdmi
-      - mediatek,mt8173-hdmi
-      - mediatek,mt8195-hdmi
+    items:
+      - enum:
+          - mediatek,mt2701-hdmi
+          - mediatek,mt7623-hdmi
+          - mediatek,mt8167-hdmi
+          - mediatek,mt8173-hdmi
+      - const: syscon
+
 
   clocks: true
   clock-names: true
@@ -142,7 +144,7 @@ examples:
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     #include <dt-bindings/interrupt-controller/irq.h>
     hdmi0: hdmi@14025000 {
-        compatible = "mediatek,mt8173-hdmi";
+        compatible = "mediatek,mt8173-hdmi", "syscon";
         reg = <0x14025000 0x400>;
         interrupts = <GIC_SPI 206 IRQ_TYPE_LEVEL_LOW>;
         clocks = <&mmsys CLK_MM_HDMI_PIXEL>,
diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
index 7640b5158ff9..3e7a0f406631 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@ -1306,7 +1306,7 @@ od@14023000 {
 		};
 
 		hdmi0: hdmi@14025000 {
-			compatible = "mediatek,mt8173-hdmi";
+			compatible = "mediatek,mt8173-hdmi", "syscon";
 			reg = <0 0x14025000 0 0x400>;
 			interrupts = <GIC_SPI 206 IRQ_TYPE_LEVEL_LOW>;
 			clocks = <&mmsys CLK_MM_HDMI_PIXEL>,

-- 
b4 0.10.0-dev