On Wed 12 Apr 14:15 PDT 2017, Jordan Crouse wrote:
> The 'zap-shader' subnode is used to define a phandle for the
> PIL memory region that is required to load GPU secure firwmare images
> (known as the "zap shader").
>
> Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Regards,
Bjorn
> ---
> Documentation/devicetree/bindings/display/msm/gpu.txt | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/display/msm/gpu.txt b/Documentation/devicetree/bindings/display/msm/gpu.txt
> index 43fac0f..0376b20 100644
> --- a/Documentation/devicetree/bindings/display/msm/gpu.txt
> +++ b/Documentation/devicetree/bindings/display/msm/gpu.txt
> @@ -15,6 +15,15 @@ Required properties:
> * "iface"
> * "mem_iface"
>
> +Subnodes:
> +- zap-shader: Defines the memory region used by the zap shader
> + to load the firmware via the PIL loader. This is required
> + for adreno-5xx targets and newer unless the secure mode
> + is specifically disabled on a target.
> +
> +Required properties for zap-shader:
> +- memory-region: Phandle to the PIL reserved memory region.
> +
> Example:
>
> / {
> @@ -34,5 +43,9 @@ Example:
> <&mmcc GFX3D_CLK>,
> <&mmcc GFX3D_AHB_CLK>,
> <&mmcc MMSS_IMEM_AHB_CLK>;
> +
> + zap-shader {
> + memory-region = <&peripheral_reserved>;
> + };
> };
> };
> --
> 1.9.1
>
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