linux-kernel - [PATCH RFC 24/24] arm64: dts: qcom: x1e80100: 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-v1-24-09c2480fe3e6@oss.qualcomm.com>
Date: Mon, 28 Jul 2025 18:16:24 +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 24/24] arm64: dts: qcom: x1e80100: 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: 721e38301b79 ("arm64: dts: qcom: x1e80100: Add gpu support")
Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/x1e80100.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
index 5e9a8fa3cf96468b12775f91192cbd779d5ce946..6620517fbb0f3ed715c4901ec53dcbc6235be88f 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
@@ -3928,6 +3928,12 @@ gpucc: clock-controller@...0000 {
 			clocks = <&bi_tcxo_div2>,
 				 <&gcc GCC_GPU_GPLL0_CPH_CLK_SRC>,
 				 <&gcc GCC_GPU_GPLL0_DIV_CPH_CLK_SRC>;
+
+			power-domains = <&rpmhpd RPMHPD_CX>,
+					<&rpmhpd RPMHPD_MX>,
+					<&rpmhpd RPMHPD_GFX>,
+					<&rpmhpd RPMHPD_GMXC>;
+
 			#clock-cells = <1>;
 			#reset-cells = <1>;
 			#power-domain-cells = <1>;

-- 
2.50.1