linux-kernel - [PATCH 3/3] arm64: dts: qcom: msm8996: Add missing UFS host controller reset

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Message-Id: <20240129-ufs-core-reset-fix-v1-3-7ac628aa735f@linaro.org>
Date: Mon, 29 Jan 2024 13:22:06 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, 
 Alim Akhtar <alim.akhtar@...sung.com>, Avri Altman <avri.altman@....com>, 
 Bart Van Assche <bvanassche@....org>, Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, Andy Gross <agross@...nel.org>, 
 Andy Gross <andy.gross@...aro.org>, 
 "James E.J. Bottomley" <jejb@...ux.ibm.com>, 
 "Martin K. Petersen" <martin.petersen@...cle.com>
Cc: linux-arm-msm@...r.kernel.org, linux-scsi@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH 3/3] arm64: dts: qcom: msm8996: Add missing UFS host
 controller reset

UFS host controller reset is required for the drivers to properly reset the
controller. Hence, add it.

Fixes: 57fc67ef0d35 ("arm64: dts: qcom: msm8996: Add ufs related nodes")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 arch/arm64/boot/dts/qcom/msm8996.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
index 8d41ed261adf..a6592b3e2db7 100644
--- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
@@ -2114,6 +2114,8 @@ ufshc: ufshc@...000 {
 					<&bimc MASTER_AMPSS_M0 &cnoc SLAVE_UFS_CFG>;
 			interconnect-names = "ufs-ddr", "cpu-ufs";

+			resets = <&gcc GCC_UFS_BCR>;
+			reset-names = "rst";
 			lanes-per-direction = <1>;
 			#reset-cells = <1>;
 			status = "disabled";

-- 
2.25.1