From b55ee6b243bd2743b9cb20b6aa812091748c4304 Mon Sep 17 00:00:00 2001 From: Jordan Crouse Date: Fri, 19 Apr 2019 13:46:16 -0600 Subject: [PATCH] dt-bindings: drm/msm/gpu: Document a5xx / a6xx zap shader region Describe the zap-shader node that defines a reserved memory region to store the zap shader. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark --- Documentation/devicetree/bindings/display/msm/gpu.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/display/msm/gpu.txt b/Documentation/devicetree/bindings/display/msm/gpu.txt index c04614c..2b8fd26 100644 --- a/Documentation/devicetree/bindings/display/msm/gpu.txt +++ b/Documentation/devicetree/bindings/display/msm/gpu.txt @@ -27,6 +27,9 @@ Required properties: - qcom,gmu: For GMU attached devices a phandle to the GMU device that will control the power for the GPU. Applicable targets: - qcom,adreno-630.2 +- zap-shader: For a5xx and a6xx devices this node contains a memory-region that + points to reserved memory to store the zap shader that can be used to help + bring the GPU out of secure mode. Example 3xx/4xx/a5xx: @@ -75,5 +78,9 @@ Example a6xx (with GMU): interconnects = <&rsc_hlos MASTER_GFX3D &rsc_hlos SLAVE_EBI1>; qcom,gmu = <&gmu>; + + zap-shader { + memory-region = <&zap_shader_region>; + }; }; }; -- 2.7.4