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>
---
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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