linux-kernel - [PATCH v2 03/12] dt-bindings: phy: mediatek,hdmi-phy: Document extra clocks for MT8195

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Message-Id: <20251217-mtk-genio-evk-hdmi-support-v2-3-a994976bb39a@collabora.com>
Date: Wed, 17 Dec 2025 11:19:02 +0100
From: Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
To: Chunfeng Yun <chunfeng.yun@...iatek.com>, Vinod Koul <vkoul@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Chun-Kuang Hu <chunkuang.hu@...nel.org>, 
 Philipp Zabel <p.zabel@...gutronix.de>, 
 Guillaume Ranquet <granquet@...libre.com>
Cc: kernel@...labora.com, Krzysztof Kozlowski <krzk@...nel.org>, 
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 linux-phy@...ts.infradead.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>, 
 Nícolas F. R. A. Prado <nfraprado@...labora.com>
Subject: [PATCH v2 03/12] dt-bindings: phy: mediatek,hdmi-phy: Document
 extra clocks for MT8195

From: "Nícolas F. R. A. Prado" <nfraprado@...labora.com>

MT8195's HDMI PHY block has 4 clocks instead of just a single one.
Describe the extra clocks for it.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
[Louis-Alexis Eyraud: addressed feedback from mailing list]
Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
---
 .../devicetree/bindings/phy/mediatek,hdmi-phy.yaml | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/mediatek,hdmi-phy.yaml b/Documentation/devicetree/bindings/phy/mediatek,hdmi-phy.yaml
index cd4ac42ee45e4648ed512f68f6f28d1f3f2e1116..ac93069f48013b7f082f1b64ee0a6a60a3a912eb 100644
--- a/Documentation/devicetree/bindings/phy/mediatek,hdmi-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/mediatek,hdmi-phy.yaml
@@ -38,12 +38,20 @@ properties:
     maxItems: 1

   clocks:
+    minItems: 1
     items:
       - description: PLL reference clock
+      - description: HDMI 26MHz clock
+      - description: HDMI PLL1 clock
+      - description: HDMI PLL2 clock

   clock-names:
+    minItems: 1
     items:
       - const: pll_ref
+      - const: 26m
+      - const: pll1
+      - const: pll2

   clock-output-names:
     maxItems: 1
@@ -79,6 +87,20 @@ required:
   - "#phy-cells"
   - "#clock-cells"

+allOf:
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: mediatek,mt8195-hdmi-phy
+    then:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          maxItems: 1
+
 additionalProperties: false

 examples:

-- 
2.52.0