Thread (9 messages) 9 messages, 3 authors, 2021-12-03

[PATCH 1/5] dt-bindings: display: vc4: Add optional phandle to firmware

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From: Maxime Ripard <hidden>
Date: 2021-11-17 14:50:58
Also in: dri-devel, linux-arm-kernel
Subsystem: drm drivers, drm drivers and misc gpu patches, drm drivers for vc4, open firmware and flattened device tree bindings, the rest · Maintainers: David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Dave Stevenson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

Revision v1 of 6 in this series.

Revisions (6)
  1. v1 current
  2. v2 [diff vs current]
  3. v3 [diff vs current]
  4. v4 [diff vs current]
  5. v4 [diff vs current]
  6. v4 [diff vs current]
The firmware can free all the resources it was using to run the display
engine that won't be needed once the kernel has taken over.

Thus, we need a phandle to the firmware DT node to be able to send that
message when relevant.

Signed-off-by: Maxime Ripard <redacted>
---
 .../devicetree/bindings/display/brcm,bcm2835-vc4.yaml        | 5 +++++
 1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml
index 49a5e041aa49..18de6912b833 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml
+++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml
@@ -21,6 +21,11 @@ properties:
       - brcm,bcm2835-vc4
       - brcm,cygnus-vc4
 
+  raspberrypi,firmware:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: >
+      Phandle to the firmware node
+
 required:
   - compatible
 
-- 
2.33.1
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