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

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Date:   Tue,  4 Aug 2020 17:16:56 +0530
From:   Rajendra Nayak <rnayak@...eaurora.org>
To:     ulf.hansson@...aro.org, robh+dt@...nel.org,
        bjorn.andersson@...aro.org
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Rajendra Nayak <rnayak@...eaurora.org>
Subject: [PATCH 3/3] 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: Rajendra Nayak <rnayak@...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 d46b383..f96ca21 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -767,6 +767,8 @@
 						<&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -819,6 +821,8 @@
 						<&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -871,6 +875,8 @@
 						<&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -905,6 +911,8 @@
 						<&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -957,6 +965,8 @@
 						<&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -991,6 +1001,8 @@
 						<&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1058,6 +1070,8 @@
 						<&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1110,6 +1124,8 @@
 						<&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1144,6 +1160,8 @@
 						<&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1196,6 +1214,8 @@
 						<&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1230,6 +1250,8 @@
 						<&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>;
 				interconnect-names = "qup-core", "qup-config",
 							"qup-memory";
+				power-domains = <&rpmhpd SC7180_CX>;
+				assigned-performance-states = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
 				status = "disabled";
 			};
 
@@ -1282,6 +1304,8 @@
 						<&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>;
 				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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