diff options
| author | Anson Huang <Anson.Huang@nxp.com> | 2019-08-18 02:32:25 -0400 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2019-08-19 16:15:35 +0200 |
| commit | 01c493144e52ad068098b5f497f897dc74c1610c (patch) | |
| tree | f4b788f8a708d959b4fa234ef152e3b3716234ea | |
| parent | 3e44dd09736d98b4b14956e3cfe09260b4cceb50 (diff) | |
arm64: dts: imx8mn: Add cpu-freq support
Add A53 OPP table, cpu regulator and speed grading node to
support cpu-freq driver.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts | 4 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mn.dtsi | 41 |
2 files changed, 45 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts index 10ebf776d48a..11c705d225d0 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 1d8899bd2fa0..785f4c420fa4 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 { |