Hi Heiko, Heiko Stuebner <[email protected]> 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 <[email protected]>
Reviewed-by: Kever Yang <[email protected]> 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 >
