linux-kernel - [PATCH v4 2/2] dt-bindings: display: simple-framebuffer: Document the panel node

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Date:   Thu, 26 Jan 2023 18:24:35 +0000
From:   Rayyan Ansari <rayyan@...ari.sh>
To:     dri-devel@...ts.freedesktop.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, asahi@...ts.linux.dev,
        janne@...nau.net, Rayyan Ansari <rayyan@...ari.sh>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...il.com>, devicetree@...r.kernel.org,
        Hans de Goede <hdegoede@...hat.com>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>
Subject: [PATCH v4 2/2] dt-bindings: display: simple-framebuffer: Document the panel node

Document the new panel node and what it is used for.

Signed-off-by: Rayyan Ansari <rayyan@...ari.sh>
---
 .../devicetree/bindings/display/simple-framebuffer.yaml  | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/simple-framebuffer.yaml b/Documentation/devicetree/bindings/display/simple-framebuffer.yaml
index dd64f70b5014..4e10a100b6c8 100644
--- a/Documentation/devicetree/bindings/display/simple-framebuffer.yaml
+++ b/Documentation/devicetree/bindings/display/simple-framebuffer.yaml
@@ -26,6 +26,11 @@ description: |+
   over control to a driver for the real hardware. The bindings for the
   hw nodes must specify which node is considered the primary node.
 
+  If a panel node is given, then the driver uses this to configure the
+  physical width and height of the display. If no panel node is given,
+  then the driver uses the width and height properties of the simplefb
+  node to estimate it.
+
   It is advised to add display# aliases to help the OS determine how
   to number things. If display# aliases are used, then if the simplefb
   node contains a display property then the /aliases/display# path
@@ -110,6 +115,10 @@ properties:
     $ref: /schemas/types.yaml#/definitions/phandle
     description: Primary display hardware node
 
+  panel:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Display panel node
+
   allwinner,pipeline:
     description: Pipeline used by the framebuffer on Allwinner SoCs
     enum:
-- 
2.39.1