linux-kernel - [PATCH 2/3] arm64: dts: sc7180: Add assigned-performance-states for i2c

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Date:   Thu, 24 Dec 2020 16:42:09 +0530
From:   Roja Rani Yarubandi <rojay@...eaurora.org>
To:     ulf.hansson@...aro.org, robh+dt@...nel.org,
        bjorn.andersson@...aro.org, wsa@...nel.org
Cc:     swboyd@...omium.org, dianders@...omium.org,
        saiprakash.ranjan@...eaurora.org, mka@...omium.org,
        akashast@...eaurora.org, msavaliy@....qualcomm.com,
        parashar@...eaurora.org, rnayak@...eaurora.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        agross@...nel.org, linux-i2c@...r.kernel.org,
        Roja Rani Yarubandi <rojay@...eaurora.org>
Subject: [PATCH 2/3] arm64: dts: sc7180: Add assigned-performance-states for i2c

qup-i2c devices on sc7180 are clocked with a fixed clock (19.2 MHz).
Though qup-i2c does not support DVFS, it still needs to vote for a
performance state on 'CX' to satisfy the 19.2 MHz clock frequency
requirement.

Use 'assigned-performance-states' to pass this information from
device tree, and also add the power-domains property to specify
the CX power-domain.

Signed-off-by: Roja Rani Yarubandi <rojay@...eaurora.org>
---
 arch/arm64/boot/dts/qcom/sc7180.dtsi | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index 22b832fc62e3..70d74215ba8b 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -782,6 +782,8 @@ i2c0: i2c@...000 {
 						<&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -834,6 +836,8 @@ i2c1: i2c@...000 {
 						<&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -886,6 +890,8 @@ i2c2: i2c@...000 {
 						<&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -920,6 +926,8 @@ i2c3: i2c@...000 {
 						<&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -972,6 +980,8 @@ i2c4: i2c@...000 {
 						<&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1006,6 +1016,8 @@ i2c5: i2c@...000 {
 						<&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1073,6 +1085,8 @@ i2c6: i2c@...000 {
 						<&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1125,6 +1139,8 @@ i2c7: i2c@...000 {
 						<&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1159,6 +1175,8 @@ i2c8: i2c@...000 {
 						<&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1211,6 +1229,8 @@ i2c9: i2c@...000 {
 						<&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1245,6 +1265,8 @@ i2c10: i2c@...000 {
 						<&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1297,6 +1319,8 @@ i2c11: i2c@...000 {
 						<&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
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