linux-kernel - [PATCH RFC 09/24] arm64: dts: qcom: sar2130p: Describe GPU

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Message-Id: <20250728-topic-gpucc_power_plumbing-v1-9-09c2480fe3e6@oss.qualcomm.com>
Date: Mon, 28 Jul 2025 18:16:09 +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 09/24] arm64: dts: qcom: sar2130p: 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: be9115bfe5bf ("arm64: dts: qcom: sar2130p: add support for SAR2130P")
Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/sar2130p.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sar2130p.dtsi b/arch/arm64/boot/dts/qcom/sar2130p.dtsi
index 38f7869616ff01ece3799ced15c39375d629e364..fe481a0e64ffe6c461a32c21ea37c188abae3122 100644
--- a/arch/arm64/boot/dts/qcom/sar2130p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sar2130p.dtsi
@@ -1828,6 +1828,11 @@ gpucc: clock-controller@...0000 {
 				 <&gcc GCC_GPU_GPLL0_CLK_SRC>,
 				 <&gcc GCC_GPU_GPLL0_DIV_CLK_SRC>;
 
+			power-domains = <&rpmhpd RPMHPD_CX>,
+					<&rpmhpd RPMHPD_MX>,
+					<&rpmhpd RPMHPD_GFX>,
+					<&rpmhpd RPMHPD_MXC>;
+
 			#clock-cells = <1>;
 			#reset-cells = <1>;
 			#power-domain-cells = <1>;

-- 
2.50.1