[PATCH 2/4] dt-bindings: display: bcm2835-v3d: Add an optional reset line

[Maíra Canal]

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 at 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