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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>,
	Adam Skladowski <a39.skl@gmail.com>
Cc: Val Packett <val@packett.cool>,
	linux-arm-msm@vger.kernel.org, phone-devel@vger.kernel.org,
	~postmarketos/upstreaming@lists.sr.ht,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
	Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Subject: [PATCH v3 5/6] arm64: dts: qcom: sm6115: Add missing MDSS core reset
Date: Tue,  3 Mar 2026 00:41:24 -0300	[thread overview]
Message-ID: <20260303034847.13870-6-val@packett.cool> (raw)
In-Reply-To: <20260303034847.13870-1-val@packett.cool>

To make sure the display subsystem starts in a predictable state, we
need to reset it. Otherwise, unpredictable issues can happen, e.g.
on the motorola-guamp smartphone DSI would not transmit anything.

Wire up the reset to fix.

Fixes: 705e50427d81 ("arm64: dts: qcom: sm6115: Add mdss/dpu node")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Val Packett <val@packett.cool>
---
 arch/arm64/boot/dts/qcom/sm6115.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6115.dtsi b/arch/arm64/boot/dts/qcom/sm6115.dtsi
index e9336adbc391..3a9a1ad8d581 100644
--- a/arch/arm64/boot/dts/qcom/sm6115.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6115.dtsi
@@ -1864,6 +1864,8 @@ mdss: display-subsystem@5e00000 {
 				 <&gcc GCC_DISP_HF_AXI_CLK>,
 				 <&dispcc DISP_CC_MDSS_MDP_CLK>;
 
+			resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
+
 			interrupts = <GIC_SPI 186 IRQ_TYPE_LEVEL_HIGH>;
 			interrupt-controller;
 			#interrupt-cells = <1>;
-- 
2.52.0


  parent reply	other threads:[~2026-03-03  3:49 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-03  3:41 [PATCH v3 0/6] SM6115/SM6125 MDSS core reset Val Packett
2026-03-03  3:41 ` [PATCH v3 1/6] dt-bindings: clock: qcom,sm6115-dispcc: Define MDSS resets Val Packett
2026-03-03  3:41 ` [PATCH v3 2/6] dt-bindings: clock: qcom,dispcc-sm6125: " Val Packett
2026-03-03  3:41 ` [PATCH v3 3/6] clk: qcom: dispcc-sm6115: Add missing " Val Packett
2026-03-03  6:32   ` Krzysztof Kozlowski
2026-03-03  3:41 ` [PATCH v3 4/6] clk: qcom: dispcc-sm6125: " Val Packett
2026-03-03  6:34   ` Krzysztof Kozlowski
2026-03-03  3:41 ` Val Packett [this message]
2026-03-03  6:34   ` [PATCH v3 5/6] arm64: dts: qcom: sm6115: Add missing MDSS core reset Krzysztof Kozlowski
2026-03-03  3:41 ` [PATCH v3 6/6] arm64: dts: qcom: sm6125: " Val Packett
2026-03-03  6:33   ` Krzysztof Kozlowski
2026-03-11 20:56 ` (subset) [PATCH v3 0/6] SM6115/SM6125 " Bjorn Andersson

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