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From: Akhil P Oommen <akhilpo@codeaurora.org>
To: freedreno@lists.freedesktop.org, devicetree@vger.kernel.org
Cc: dri-devel@freedesktop.org, linux-arm-msm@vger.kernel.org,
	linux-kernel@vger.kernel.org, jcrouse@codeaurora.org,
	mka@chromium.org, robdclark@gmail.com, dianders@chromium.org
Subject: [PATCH v2 3/3] dt-bindings: drm/msm/gpu: Add cooling device support
Date: Mon, 19 Oct 2020 18:44:28 +0530	[thread overview]
Message-ID: <1603113268-21161-3-git-send-email-akhilpo@codeaurora.org> (raw)
In-Reply-To: <1603113268-21161-1-git-send-email-akhilpo@codeaurora.org>

Add cooling device support to gpu. A cooling device is bound to a
thermal zone to allow thermal mitigation.

Signed-off-by: Akhil P Oommen <akhilpo@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 1af0ff1..a496381 100644
--- a/Documentation/devicetree/bindings/display/msm/gpu.txt
+++ b/Documentation/devicetree/bindings/display/msm/gpu.txt
@@ -39,6 +39,10 @@ Required properties:
         a4xx Snapdragon SoCs. See
         Documentation/devicetree/bindings/sram/qcom,ocmem.yaml.
 
+Optional properties:
+- #cooling-cells: The value must be 2. Please refer
+	Documentation/devicetree/bindings/thermal/thermal.txt for detail.
+
 Example 3xx/4xx:
 
 / {
@@ -61,6 +65,7 @@ Example 3xx/4xx:
 		power-domains = <&mmcc OXILICX_GDSC>;
 		operating-points-v2 = <&gpu_opp_table>;
 		iommus = <&gpu_iommu 0>;
+		#cooling-cells = <2>;
 	};
 
 	gpu_sram: ocmem@fdd00000 {
@@ -98,6 +103,8 @@ Example a6xx (with GMU):
 		reg = <0x5000000 0x40000>, <0x509e000 0x10>;
 		reg-names = "kgsl_3d0_reg_memory", "cx_mem";
 
+		#cooling-cells = <2>;
+
 		/*
 		 * Look ma, no clocks! The GPU clocks and power are
 		 * controlled entirely by the GMU
-- 
2.7.4


  parent reply	other threads:[~2020-10-19 13:14 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-19 13:14 [PATCH v2 1/3] drm/msm: Add support for GPU cooling Akhil P Oommen
2020-10-19 13:14 ` [PATCH v2 2/3] arm64: dts: qcom: sc7180: Add gpu cooling support Akhil P Oommen
2020-10-19 13:14 ` Akhil P Oommen [this message]
2020-10-26 13:37   ` [PATCH v2 3/3] dt-bindings: drm/msm/gpu: Add cooling device support Rob Herring

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