Hi Heiko,
Heiko Stuebner heiko@sntech.de 于2021年12月26日周日 20:46写道：
The rk3399-puma board needs a 950mV vdd_log to work stable. This was already added in commit 77012e79ffc3 ("rockchip: rk3399-puma: Set VDD_LOG to 950 mV") but lost again with commit 167efc2c7a46 ("arm64: dts: rk3399: Sync v5.7-rc1 from Linux")
So to make puma stable again re-add the vdd_log pwm regulator. As it is not part of the mainline Linux dts right now, add it to the -u-boot dtsi for puma.
Fixes: 167efc2c7a46 ("arm64: dts: rk3399: Sync v5.7-rc1 from Linux") Signed-off-by: Heiko Stuebner heiko@sntech.de
Reviewed-by: Kever Yang kever.yang@rock-chips.com
Thanks, - Kever
arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi b/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi index 29846c4b00..76eb51d2d7 100644 --- a/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi +++ b/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi @@ -49,6 +49,17 @@ regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; };
vdd_log: vdd-log {compatible = "pwm-regulator";pwms = <&pwm2 0 25000 1>;regulator-name = "vdd_log";regulator-min-microvolt = <800000>;regulator-max-microvolt = <1400000>;regulator-always-on;regulator-boot-on;regulator-init-microvolt = <950000>;};};
&gpio1 {
2.30.2