Linux ARM-MSM sub-architecture
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From: Val Packett <val@packett.cool>
To: Bjorn Andersson <andersson@kernel.org>,
	Konrad Dybcio <konradybcio@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Marijn Suijten <marijn.suijten@somainline.org>,
	Dmitry Baryshkov <lumag@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, phone-devel@vger.kernel.org,
	~postmarketos/upstreaming@lists.sr.ht,
	Val Packett <val@packett.cool>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 6/6] arm64: dts: qcom: sm6125: Add missing MDSS core reset
Date: Mon, 16 Feb 2026 20:25:24 -0300	[thread overview]
Message-ID: <20260216233600.13098-8-val@packett.cool> (raw)
In-Reply-To: <20260216233600.13098-2-val@packett.cool>

To make sure the display subsystem starts in a predictable state, we
need to reset it. On closely related SoC (sm6115) this has caused
DSI displays to not work.

Wire up the reset to fix.

Fixes: 0865d23a0226 ("arm64: dts: qcom: sm6125: Add display hardware nodes")
Signed-off-by: Val Packett <val@packett.cool>
---
 arch/arm64/boot/dts/qcom/sm6125.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6125.dtsi b/arch/arm64/boot/dts/qcom/sm6125.dtsi
index 80c42dff5399..a22374e5a17f 100644
--- a/arch/arm64/boot/dts/qcom/sm6125.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6125.dtsi
@@ -1238,6 +1238,8 @@ mdss: display-subsystem@5e00000 {
 				      "ahb",
 				      "core";
 
+			resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
+
 			power-domains = <&dispcc MDSS_GDSC>;
 
 			iommus = <&apps_smmu 0x400 0x0>;
@@ -1437,6 +1439,7 @@ dispcc: clock-controller@5f00000 {
 			power-domains = <&rpmpd RPMPD_VDDCX>;
 
 			#clock-cells = <1>;
+			#reset-cells = <1>;
 			#power-domain-cells = <1>;
 		};
 
-- 
2.52.0


  parent reply	other threads:[~2026-02-16 23:39 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-16 23:25 [PATCH 0/6] SM6115/SM6125 MDSS core reset Val Packett
2026-02-16 23:25 ` [PATCH 1/6] dt-bindings: clock: qcom,sm6115-dispcc: Define MDSS resets Val Packett
2026-02-17  8:11   ` Krzysztof Kozlowski
2026-02-16 23:25 ` [PATCH 2/6] dt-bindings: clock: qcom,dispcc-sm6125: " Val Packett
2026-02-16 23:25 ` [PATCH 3/6] clk: qcom: dispcc-sm6115: Add missing " Val Packett
2026-02-17  7:36   ` Dmitry Baryshkov
2026-02-17  9:22   ` Konrad Dybcio
2026-02-16 23:25 ` [PATCH 4/6] clk: qcom: dispcc-sm6125: " Val Packett
2026-02-17  7:37   ` Dmitry Baryshkov
2026-02-17  8:12   ` Krzysztof Kozlowski
2026-02-17  9:22   ` Konrad Dybcio
2026-02-16 23:25 ` [PATCH 5/6] arm64: dts: qcom: sm6115: Add missing MDSS core reset Val Packett
2026-02-17  7:37   ` Dmitry Baryshkov
2026-02-17  9:22   ` Konrad Dybcio
2026-02-16 23:25 ` Val Packett [this message]
2026-02-17  7:37   ` [PATCH 6/6] arm64: dts: qcom: sm6125: " Dmitry Baryshkov
2026-02-17  9:23   ` Konrad Dybcio
2026-02-18 13:31   ` Yedaya Katsman

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