linux-kernel - [PATCH V3 4/5] arm64: dts: qcom: sm8650: Enable MCQ support for UFS controller

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Message-ID: <20250821112403.12078-5-quic_rdwivedi@quicinc.com>
Date: Thu, 21 Aug 2025 16:54:02 +0530
From: Ram Kumar Dwivedi <quic_rdwivedi@...cinc.com>
To: <andersson@...nel.org>, <konradybcio@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <mani@...nel.org>,
        <James.Bottomley@...senPartnership.com>, <martin.petersen@...cle.com>
CC: <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-scsi@...r.kernel.org>
Subject: [PATCH V3 4/5] arm64: dts: qcom: sm8650: Enable MCQ support for UFS controller

Enable Multi-Circular Queue (MCQ) support for the UFS host controller
on the Qualcomm SM8650 platform by updating the device tree node. This
includes adding new register region for MCQ and specifying the MSI parent
required for MCQ operation.

Signed-off-by: Ram Kumar Dwivedi <quic_rdwivedi@...cinc.com>
---
 arch/arm64/boot/dts/qcom/sm8650.dtsi | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index d6794901f06b..18c4ebf3c1a6 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -3950,7 +3950,10 @@ ufs_mem_phy: phy@...0000 {
 
 		ufs_mem_hc: ufshc@...4000 {
 			compatible = "qcom,sm8650-ufshc", "qcom,ufshc", "jedec,ufs-2.0";
-			reg = <0 0x01d84000 0 0x3000>;
+			reg = <0 0x01d84000 0 0x3000>,
+			      <0 0x1da0000 0 0x15000>;
+			reg-names = "std",
+				    "mcq";
 
 			interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH 0>;
 
@@ -3988,6 +3991,8 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
 
 			iommus = <&apps_smmu 0x60 0>;
 
+			msi-parent = <&gic_its 0x60>;
+
 			lanes-per-direction = <2>;
 			qcom,ice = <&ice>;
 
-- 
2.50.1