From 2568b8b0860eede10b39109aaa3e51900737b5d6 Mon Sep 17 00:00:00 2001 From: Nicolas Frattaroli Date: Sat, 20 Dec 2025 19:49:52 +0100 Subject: [PATCH] dt-bindings: gpu: mali-valhall-csf: Add shader-present nvmem cell On the MediaTek MT8196 SoC, the bitmask for which shader cores are present and functional is not the one in the Mali GPU's registers, but in an external efuse. Add the nvmem cell properties to describe such a setup, and make them required on MT8196. Reviewed-by: Rob Herring (Arm) Signed-off-by: Nicolas Frattaroli Link: https://patch.msgid.link/20251220-mt8196-shader-present-v2-1-45b1ff1dfab0@collabora.com Signed-off-by: Boris Brezillon --- .../bindings/gpu/arm,mali-valhall-csf.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-valhall-csf.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-valhall-csf.yaml index bee9faf1d3f82..8eccd4338a2b2 100644 --- a/Documentation/devicetree/bindings/gpu/arm,mali-valhall-csf.yaml +++ b/Documentation/devicetree/bindings/gpu/arm,mali-valhall-csf.yaml @@ -51,6 +51,14 @@ properties: - stacks - const: stacks + nvmem-cells: + items: + - description: bitmask of functional shader cores + + nvmem-cell-names: + items: + - const: shader-present + mali-supply: true operating-points-v2: true @@ -108,6 +116,8 @@ allOf: properties: clocks: minItems: 3 + nvmem-cells: false + nvmem-cell-names: false power-domains: maxItems: 1 power-domain-names: false @@ -133,6 +143,8 @@ allOf: - const: core - const: stacks required: + - nvmem-cells + - nvmem-cell-names - power-domains examples: @@ -179,6 +191,8 @@ examples: , ; interrupt-names = "job", "mmu", "gpu"; + nvmem-cells = <&shader_present>; + nvmem-cell-names = "shader-present"; power-domains = <&gpufreq>; }; -- 2.47.3