linux-kernel - [PATCH v2 3/3] arm64: dts: qcom: msm8953: add reset for display subsystem

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Message-Id: <20240125-msm8953-mdss-reset-v2-3-fd7824559426@z3ntu.xyz>
Date: Thu, 25 Jan 2024 22:35:14 +0100
From: Luca Weiss <luca@...tu.xyz>
To: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Luca Weiss <luca@...tu.xyz>, Vladimir Lypak <vladimir.lypak@...il.com>
Subject: [PATCH v2 3/3] arm64: dts: qcom: msm8953: add reset for display
 subsystem

From: Vladimir Lypak <vladimir.lypak@...il.com>

With this reset we can avoid situations like IRQ storms from DSI host
before it even started probing (because boot-loader left DSI IRQs on).

Signed-off-by: Vladimir Lypak <vladimir.lypak@...il.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Signed-off-by: Luca Weiss <luca@...tu.xyz>
---
 arch/arm64/boot/dts/qcom/msm8953.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8953.dtsi b/arch/arm64/boot/dts/qcom/msm8953.dtsi
index ad2f8cf9c966..dcb5c98b793c 100644
--- a/arch/arm64/boot/dts/qcom/msm8953.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8953.dtsi
@@ -859,6 +859,8 @@ mdss: display-subsystem@...0000 {
 				      "vsync",
 				      "core";
 
+			resets = <&gcc GCC_MDSS_BCR>;
+
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges;

-- 
2.43.0