linux-kernel - [PATCH v3 2/3] arm64: dts: qcom: sm6350: Add OPP table support to UFSHC

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Message-Id: <20251023-sm6350-ufs-things-v3-2-b68b74e29d35@fairphone.com>
Date: Thu, 23 Oct 2025 13:39:27 +0200
From: Luca Weiss <luca.weiss@...rphone.com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 Krzysztof Kozlowski <krzk@...nel.org>, linux-arm-msm@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Luca Weiss <luca.weiss@...rphone.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH v3 2/3] arm64: dts: qcom: sm6350: Add OPP table support to
 UFSHC

UFS host controller, when scaling gears, should choose appropriate
performance state of RPMh power domain controller along with clock
frequency. So let's add the OPP table support to specify both clock
frequency and RPMh performance states replacing the old "freq-table-hz"
property.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 arch/arm64/boot/dts/qcom/sm6350.dtsi | 42 +++++++++++++++++++++++++++---------
 1 file changed, 32 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm6350.dtsi b/arch/arm64/boot/dts/qcom/sm6350.dtsi
index 19a7b9f9ea8b..30e77eca4c02 100644
--- a/arch/arm64/boot/dts/qcom/sm6350.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6350.dtsi
@@ -1175,18 +1175,40 @@ ufs_mem_hc: ufshc@...4000 {
 				 <&gcc GCC_UFS_PHY_RX_SYMBOL_0_CLK>,
 				 <&gcc GCC_UFS_PHY_RX_SYMBOL_1_CLK>,
 				 <&gcc GCC_UFS_PHY_ICE_CORE_CLK>;
-			freq-table-hz =
-				<50000000 200000000>,
-				<0 0>,
-				<0 0>,
-				<37500000 150000000>,
-				<0 0>,
-				<0 0>,
-				<0 0>,
-				<0 0>,
-				<75000000 300000000>;
+
+			operating-points-v2 = <&ufs_opp_table>;
 
 			status = "disabled";
+
+			ufs_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				opp-50000000 {
+					opp-hz = /bits/ 64 <50000000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <37500000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <75000000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+				};
+
+				opp-200000000 {
+					opp-hz = /bits/ 64 <200000000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <150000000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <300000000>;
+					required-opps = <&rpmhpd_opp_nom>;
+				};
+			};
 		};
 
 		ufs_mem_phy: phy@...7000 {

-- 
2.51.1