From: Anson Huang <[email protected]>
Add A53 OPP table, cpu regulator and speed grading node to
support cpu-freq driver.
Signed-off-by: Anson Huang <[email protected]>
---
arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts | 4 +++
arch/arm64/boot/dts/freescale/imx8mn.dtsi | 41 +++++++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
index 10ebf77..11c705d 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts
@@ -27,6 +27,10 @@
};
};
+&A53_0 {
+ cpu-supply = <&buck2_reg>;
+};
+
&iomuxc {
pinctrl-names = "default";
diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index 1d8899b..785f4c4 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -51,6 +51,9 @@
clocks = <&clk IMX8MN_CLK_ARM>;
enable-method = "psci";
next-level-cache = <&A53_L2>;
+ operating-points-v2 = <&a53_opp_table>;
+ nvmem-cells = <&cpu_speed_grade>;
+ nvmem-cell-names = "speed_grade";
};
A53_1: cpu@1 {
@@ -61,6 +64,7 @@
clocks = <&clk IMX8MN_CLK_ARM>;
enable-method = "psci";
next-level-cache = <&A53_L2>;
+ operating-points-v2 = <&a53_opp_table>;
};
A53_2: cpu@2 {
@@ -71,6 +75,7 @@
clocks = <&clk IMX8MN_CLK_ARM>;
enable-method = "psci";
next-level-cache = <&A53_L2>;
+ operating-points-v2 = <&a53_opp_table>;
};
A53_3: cpu@3 {
@@ -81,6 +86,7 @@
clocks = <&clk IMX8MN_CLK_ARM>;
enable-method = "psci";
next-level-cache = <&A53_L2>;
+ operating-points-v2 = <&a53_opp_table>;
};
A53_L2: l2-cache0 {
@@ -88,6 +94,35 @@
};
};
+ a53_opp_table: opp-table {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-1200000000 {
+ opp-hz = /bits/ 64 <1200000000>;
+ opp-microvolt = <850000>;
+ opp-supported-hw = <0xb00>, <0x7>;
+ clock-latency-ns = <150000>;
+ opp-suspend;
+ };
+
+ opp-1400000000 {
+ opp-hz = /bits/ 64 <1400000000>;
+ opp-microvolt = <950000>;
+ opp-supported-hw = <0x300>, <0x7>;
+ clock-latency-ns = <150000>;
+ opp-suspend;
+ };
+
+ opp-1500000000 {
+ opp-hz = /bits/ 64 <1500000000>;
+ opp-microvolt = <1000000>;
+ opp-supported-hw = <0x100>, <0x3>;
+ clock-latency-ns = <150000>;
+ opp-suspend;
+ };
+ };
+
memory@40000000 {
device_type = "memory";
reg = <0x0 0x40000000 0 0x80000000>;
@@ -288,6 +323,12 @@
compatible = "fsl,imx8mn-ocotp", "fsl,imx7d-ocotp", "syscon";
reg = <0x30350000 0x10000>;
clocks = <&clk IMX8MN_CLK_OCOTP_ROOT>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ cpu_speed_grade: speed-grade@10 {
+ reg = <0x10 4>;
+ };
};
anatop: anatop@30360000 {
--
2.7.4