From: Jordan Crouse <jcrouse@codeaurora.org>
To: freedreno@lists.freedesktop.org
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
Sean Paul <sean@poorly.run>,
devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
Rob Herring <robh+dt@kernel.org>, Rob Clark <robdclark@gmail.com>,
David Airlie <airlied@linux.ie>,
Mark Rutland <mark.rutland@arm.com>,
Daniel Vetter <daniel@ffwll.ch>
Subject: [PATCH v2 3/3] dt-bindings: drm/msm/gpu: Document a5xx / a6xx zap shader region
Date: Fri, 19 Apr 2019 13:46:16 -0600 [thread overview]
Message-ID: <1555703176-5499-4-git-send-email-jcrouse@codeaurora.org> (raw)
In-Reply-To: <1555703176-5499-1-git-send-email-jcrouse@codeaurora.org>
Describe the zap-shader node that defines a reserved memory region
to store the zap shader.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
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 aad1aef..1e6d870 100644
--- a/Documentation/devicetree/bindings/display/msm/gpu.txt
+++ b/Documentation/devicetree/bindings/display/msm/gpu.txt
@@ -25,6 +25,9 @@ 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:
@@ -71,5 +74,9 @@ Example a6xx (with GMU):
operating-points-v2 = <&gpu_opp_table>;
qcom,gmu = <&gmu>;
+
+ zap-shader {
+ memory-region = <&zap_shader_region>;
+ };
};
};
--
2.7.4
prev parent reply other threads:[~2019-04-19 19:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-19 19:46 [PATCH v2 0/3] drm/msm/a6xx: Add support for zap shader Jordan Crouse
2019-04-19 19:46 ` [PATCH v2 1/3] drm/msm/gpu: Move zap shader loading to adreno Jordan Crouse
2019-04-19 19:46 ` [PATCH v2 2/3] drm/msm/a6xx: Add zap shader load Jordan Crouse
2019-04-19 19:46 ` Jordan Crouse [this message]
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