linux-kernel - [PATCH 5/5] arm64: dts: qcom: sc7280: Add Reset support for gpu

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Message-ID: <20220730144713.5.I6a1fca5d53c886c05ea3e24cd4282d31c9c0cd0b@changeid>
Date:   Sat, 30 Jul 2022 14:47:44 +0530
From:   Akhil P Oommen <quic_akhilpo@...cinc.com>
To:     freedreno <freedreno@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        Rob Clark <robdclark@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        "Stephen Boyd" <swboyd@...omium.org>
CC:     Douglas Anderson <dianders@...omium.org>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 5/5] arm64: dts: qcom: sc7280: Add Reset support for gpu

Add support for Reset using GPUCC driver for GPU. This helps to ensure
that GPU state is reset by making sure that CX head switch is collapsed.

Signed-off-by: Akhil P Oommen <quic_akhilpo@...cinc.com>
---

 arch/arm64/boot/dts/qcom/sc7280.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
index e66fc67..f5257d6 100644
--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -2243,6 +2243,9 @@
 			nvmem-cells = <&gpu_speed_bin>;
 			nvmem-cell-names = "speed_bin";
 
+			resets = <&gpucc GPU_CX_COLLAPSE>;
+			reset-names = "cx_collapse";
+
 			gpu_opp_table: opp-table {
 				compatible = "operating-points-v2";
 
-- 
2.7.4