From: Anson Huang <Anson.Huang@xxxxxxx> Add A53 OPP table, cpu regulator and speed grading node to support cpu-freq driver. Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx> --- 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