linux-kernel - [PATCH v5 5/5] arm64: dts: qcom: sm8250: Add OPP table support to UFSHC

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Date:   Wed, 11 Oct 2023 17:55:43 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     vireshk@...nel.org, nm@...com, sboyd@...nel.org,
        myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
        cw00.choi@...sung.com, andersson@...nel.org,
        konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        jejb@...ux.ibm.com, martin.petersen@...cle.com
Cc:     alim.akhtar@...sung.com, avri.altman@....com, bvanassche@....org,
        linux-scsi@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        quic_asutoshd@...cinc.com, quic_cang@...cinc.com,
        quic_nitirawa@...cinc.com, quic_narepall@...cinc.com,
        quic_bhaskarv@...cinc.com, quic_richardp@...cinc.com,
        quic_nguyenb@...cinc.com, quic_ziqichen@...cinc.com,
        bmasney@...hat.com, krzysztof.kozlowski@...aro.org,
        linux-kernel@...r.kernel.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH v5 5/5] arm64: dts: qcom: sm8250: 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.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8250.dtsi | 39 +++++++++++++++++++++-------
 1 file changed, 30 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index a4e58ad731c3..33abd84aae53 100644
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -2198,21 +2198,42 @@ ufs_mem_hc: ufshc@...4000 {
 				<&gcc GCC_UFS_PHY_TX_SYMBOL_0_CLK>,
 				<&gcc GCC_UFS_PHY_RX_SYMBOL_0_CLK>,
 				<&gcc GCC_UFS_PHY_RX_SYMBOL_1_CLK>;
-			freq-table-hz =
-				<37500000 300000000>,
-				<0 0>,
-				<0 0>,
-				<37500000 300000000>,
-				<0 0>,
-				<0 0>,
-				<0 0>,
-				<0 0>;
+
+			operating-points-v2 = <&ufs_opp_table>;
 
 			interconnects = <&aggre1_noc MASTER_UFS_MEM 0 &mc_virt SLAVE_EBI_CH0 0>,
 					<&gem_noc MASTER_AMPSS_M0 0 &config_noc SLAVE_UFS_MEM_CFG 0>;
 			interconnect-names = "ufs-ddr", "cpu-ufs";
 
 			status = "disabled";
+
+			ufs_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				opp-37500000 {
+					opp-hz = /bits/ 64 <37500000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <37500000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+				};
+
+				opp-300000000 {
+					opp-hz = /bits/ 64 <300000000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <300000000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>;
+					required-opps = <&rpmhpd_opp_nom>;
+				};
+			};
 		};
 
 		ufs_mem_phy: phy@...7000 {
-- 
2.25.1