linux-kernel - [PATCH RFC 18/24] arm64: dts: qcom: sm8150: Describe GPU

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250728-topic-gpucc_power_plumbing-v1-18-09c2480fe3e6@oss.qualcomm.com>
Date: Mon, 28 Jul 2025 18:16:18 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: Ulf Hansson <ulf.hansson@...aro.org>, 
 Johan Hovold <johan+linaro@...nel.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Taniya Das <taniya.das@....qualcomm.com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Taniya Das <quic_tdas@...cinc.com>, 
 Imran Shaik <quic_imrashai@...cinc.com>, 
 Konrad Dybcio <konradybcio@...nel.org>, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>, 
 Dmitry Baryshkov <lumag@...nel.org>, cros-qcom-dts-watchers@...omium.org, 
 Douglas Anderson <dianders@...omium.org>, Vinod Koul <vkoul@...nel.org>, 
 Richard Acayan <mailingradian@...il.com>, 
 Andy Gross <andy.gross@...aro.org>, Ajit Pandey <quic_ajipan@...cinc.com>, 
 Luca Weiss <luca.weiss@...rphone.com>, Jonathan Marek <jonathan@...ek.ca>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Jagadeesh Kona <quic_jkona@...cinc.com>, 
 Akhil P Oommen <akhilpo@....qualcomm.com>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH RFC 18/24] arm64: dts: qcom: sm8150: Describe GPU_CC power
 plumbing requirements

From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

A number of power rails must be powered on in order for GPU_CC to
function. Ensure that's conveyed to the OS.

Fixes: f30ac26def18 ("arm64: dts: qcom: add sm8150 GPU nodes")
Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/sa8155p.dtsi | 6 ++++++
 arch/arm64/boot/dts/qcom/sm8150.dtsi  | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sa8155p.dtsi b/arch/arm64/boot/dts/qcom/sa8155p.dtsi
index d678ed822378b54418e4c93787f5678cf4e2a798..40d827b7959dd6a5c5ae72f2e91a0249d8398872 100644
--- a/arch/arm64/boot/dts/qcom/sa8155p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8155p.dtsi
@@ -17,6 +17,12 @@ &dispcc {
 	power-domains = <&rpmhpd SA8155P_CX>;
 };
 
+&gpucc {
+	power-domains = <&rpmhpd SA8155P_CX>,
+			<&rpmhpd SA8155P_MX>,
+			<&rpmhpd SA8155P_GFX>;
+};
+
 &mdss_dsi0 {
 	power-domains = <&rpmhpd SA8155P_CX>;
 };
diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi
index abf12e10d33f1ce5c74e3e9136585bcb0a578492..4febadabb3ecf4c76e1733b02b10036c57670b25 100644
--- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
@@ -2351,6 +2351,10 @@ gpucc: clock-controller@...0000 {
 			#clock-cells = <1>;
 			#reset-cells = <1>;
 			#power-domain-cells = <1>;
+
+			power-domains = <&rpmhpd SM8150_CX>,
+					<&rpmhpd SM8150_MX>,
+					<&rpmhpd SM8150_GFX>;
 		};
 
 		adreno_smmu: iommu@...0000 {

-- 
2.50.1