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[v5,14/21] dt-bindings: gpu: Add 'resets' property for GPU initialization

Message ID 20250219140239.1378758-15-m.wilczynski@samsung.com (mailing list archive)
State New
Headers show
Series Enable drm/imagination BXM-4-64 Support for LicheePi 4A | expand

Commit Message

Michal Wilczynski Feb. 19, 2025, 2:02 p.m. UTC 
All IMG Rogue GPUs include a reset line that participates in the
power-up sequence. On some SoCs (e.g., T-Head TH1520 and Banana Pi
BPI-F3), this reset line is exposed and must be driven explicitly to
ensure proper initialization.

To support this, add a 'resets' property to the GPU device tree
bindings.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
---
 Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
index 256e252f8087..bb607d4b1e07 100644
--- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
+++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
@@ -37,6 +37,9 @@  properties:
   power-domains:
     maxItems: 1
 
+  resets:
+    maxItems: 1
+
 required:
   - compatible
   - reg