[PATCH 2/4] dt-bindings: display: bcm2835-v3d: Add an optional reset line
flat view
COLD23d
From: Maíra Canal <mcanal@igalia.com>
Date: 2026-08-16 14:06:24
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
The BCM2835 PM block has exposed a reset line for the V3D block since
commit 670c672608a1 ("soc: bcm: bcm2835-pm: Add support for power domains
under a new binding."), which allows the GPU to be reset without
power-cycling its domain. Document it so that the vc4 driver can use it to
recover from a GPU hang.
Keep the property optional, as existing device trees do not describe it.
Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml
index c55a8217de25..1063e686647c 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml
+++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml@@ -27,6 +27,9 @@ properties: power-domains: maxItems: 1 + resets: + maxItems: 1 + required: - compatible - reg
--
2.55.0