linux-kernel - [PATCH v2] arm64: dts: qcom: sm8550: Switch UFS from opp-table-hz to opp-v2

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Message-Id: <20240203-topic-8550_ufs_oppv2-v2-1-b0bef2a73e6c@linaro.org>
Date: Sat, 03 Feb 2024 01:10:11 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Neil Armstrong <neil.armstrong@...aro.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH v2] arm64: dts: qcom: sm8550: Switch UFS from opp-table-hz
 to opp-v2

Now that the non-legacy form of OPP is supported within the UFS driver,
go ahead and switch to it, adding support for more intermediate freq/power
states.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
Extracted out of:
https://lore.kernel.org/linux-arm-msm/15d2bd66-29f3-435b-8494-d82ec4036413@linaro.org/#t

Changes since v1:
- Set the reference clock rate to 0 in opp entries, it doesn't support
  ratesetting anyway. Confirmed UFS still works.
---
 arch/arm64/boot/dts/qcom/sm8550.dtsi | 50 +++++++++++++++++++++++++++++-------
 1 file changed, 41 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index c89d8f3dad21..144e20edf237 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -1966,6 +1966,7 @@ ufs_mem_hc: ufs@...4000 {
 			iommus = <&apps_smmu 0x60 0x0>;
 			dma-coherent;
 
+			operating-points-v2 = <&ufs_opp_table>;
 			interconnects = <&aggre1_noc MASTER_UFS_MEM 0 &mc_virt SLAVE_EBI1 0>,
 					<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_UFS_MEM_CFG 0>;
 
@@ -1986,18 +1987,49 @@ ufs_mem_hc: ufs@...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 =
-				<75000000 300000000>,
-				<0 0>,
-				<0 0>,
-				<75000000 300000000>,
-				<100000000 403000000>,
-				<0 0>,
-				<0 0>,
-				<0 0>;
 			qcom,ice = <&ice>;
 
 			status = "disabled";
+
+			ufs_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				opp-75000000 {
+					opp-hz = /bits/ 64 <75000000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <75000000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+				};
+
+				opp-150000000 {
+					opp-hz = /bits/ 64 <150000000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <150000000>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>,
+						 /bits/ 64 <0>;
+					required-opps = <&rpmhpd_opp_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>;
+				};
+			};
 		};
 
 		ice: crypto@...8000 {

---
base-commit: 076d56d74f17e625b3d63cf4743b3d7d02180379
change-id: 20240203-topic-8550_ufs_oppv2-bb88d63a4c58

Best regards,
-- 
Konrad Dybcio <konrad.dybcio@...aro.org>