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Message-ID: <20240927055140.19688-1-moudy.ho@mediatek.com>
Date: Fri, 27 Sep 2024 13:51:40 +0800
From: Moudy Ho <moudy.ho@...iatek.com>
To: Chun-Kuang Hu <chunkuang.hu@...nel.org>, Philipp Zabel
	<p.zabel@...gutronix.de>, David Airlie <airlied@...il.com>, Simona Vetter
	<simona@...ll.ch>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
	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>, "jason-jh . lin"
	<jason-jh.lin@...iatek.com>, Macpaul Lin <macpaul.lin@...iatek.com>
CC: <dri-devel@...ts.freedesktop.org>, <linux-mediatek@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, Moudy Ho
	<moudy.ho@...iatek.corp-partner.google.com>, Moudy Ho <moudy.ho@...iatek.com>
Subject: [PATCH v2] dt-bindings: display: mediatek: split: add clocks count constraint for MT8195

From: Moudy Ho <moudy.ho@...iatek.corp-partner.google.com>

The display node in mt8195.dtsi was triggering a CHECK_DTBS error due
to an excessively long 'clocks' property:
  display@...06000: clocks: [[31, 14], [31, 43], [31, 44]] is too long

To resolve this issue, apply the limit by setting 'maxItems: 3' in MT8195
additional condition.

Fixes: 4ed545e7d100 ("dt-bindings: display: mediatek: disp: split each block to individual yaml")
Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
Signed-off-by: Moudy Ho <moudy.ho@...iatek.com>
--
The purpose of this patch is to separate the corrections for
MediaTek SPLIT CHECK_DTBS error from the original mailing list
mentioned below:
https://lore.kernel.org/all/20240924103156.13119-2-macpaul.lin@mediatek.com/

Changes since v1:
  - Adding functional descriptions and quantity restrictions.
---
 .../bindings/display/mediatek/mediatek,split.yaml           | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,split.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,split.yaml
index e4affc854f3d..bce1b8b866ce 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,split.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,split.yaml
@@ -57,6 +57,9 @@ properties:
   clocks:
     items:
       - description: SPLIT Clock
+      - description: HDMI RX Clock
+      - description: HDMI Metadata Clock
+    minItems: 1
 
 required:
   - compatible
@@ -72,6 +75,9 @@ allOf:
             const: mediatek,mt8195-mdp3-split
 
     then:
+      properties:
+        clocks:
+          maxItems: 3
       required:
         - mediatek,gce-client-reg
 
-- 
2.34.1


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