From c6599944af5a09029259ff8c533d22754f2b1ba4 Mon Sep 17 00:00:00 2001 From: Chukun Pan Date: Tue, 1 Apr 2025 20:00:20 +0800 Subject: [PATCH] arm64: dts: rockchip: Enable regulators for Radxa E20C Enable pwm and fixed regulators for Radxa E20C. The pwm regulator is used to power the CPU and GPU. Note that the LPDDR4 voltage is 1.1V. Signed-off-by: Chukun Pan Reviewed-by: Jonas Karlman Link: https://lore.kernel.org/r/20250401120020.976343-3-amadeus@jmu.edu.cn Signed-off-by: Heiko Stuebner --- .../boot/dts/rockchip/rk3528-radxa-e20c.dts | 73 +++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts index 6e77f7753ff78..0942baba6b8fe 100644 --- a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts +++ b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts @@ -9,6 +9,7 @@ #include #include +#include #include "rk3528.dtsi" / { @@ -80,6 +81,26 @@ }; }; + vdd_0v9: regulator-0v9-vdd { + compatible = "regulator-fixed"; + regulator-name = "vdd_0v9"; + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <900000>; + regulator-max-microvolt = <900000>; + vin-supply = <&vcc5v0_sys>; + }; + + vcc_ddr: regulator-1v1-vcc-ddr { + compatible = "regulator-fixed"; + regulator-name = "vcc_ddr"; + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <1100000>; + regulator-max-microvolt = <1100000>; + vin-supply = <&vcc5v0_sys>; + }; + vcc_1v8: regulator-1v8-vcc { compatible = "regulator-fixed"; regulator-name = "vcc_1v8"; @@ -108,6 +129,46 @@ regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; }; + + vdd_arm: regulator-vdd-arm { + compatible = "pwm-regulator"; + pwms = <&pwm1 0 5000 PWM_POLARITY_INVERTED>; + pwm-supply = <&vcc5v0_sys>; + regulator-name = "vdd_arm"; + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <746000>; + regulator-max-microvolt = <1201000>; + regulator-settling-time-up-us = <250>; + }; + + vdd_logic: regulator-vdd-logic { + compatible = "pwm-regulator"; + pwms = <&pwm2 0 5000 PWM_POLARITY_INVERTED>; + pwm-supply = <&vcc5v0_sys>; + regulator-name = "vdd_logic"; + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <705000>; + regulator-max-microvolt = <1006000>; + regulator-settling-time-up-us = <250>; + }; +}; + +&cpu0 { + cpu-supply = <&vdd_arm>; +}; + +&cpu1 { + cpu-supply = <&vdd_arm>; +}; + +&cpu2 { + cpu-supply = <&vdd_arm>; +}; + +&cpu3 { + cpu-supply = <&vdd_arm>; }; &i2c1 { @@ -146,6 +207,18 @@ }; }; +&pwm1 { + pinctrl-names = "default"; + pinctrl-0 = <&pwm1m0_pins>; + status = "okay"; +}; + +&pwm2 { + pinctrl-names = "default"; + pinctrl-0 = <&pwm2m0_pins>; + status = "okay"; +}; + &saradc { vref-supply = <&vcc_1v8>; status = "okay"; -- 2.47.3