Messages in this thread Patch in this message | | | From | Kever Yang <> | Subject | [PATCH 1/3] arm64: dts: rockchip: Fix min voltage for rk3399-firefly vdd_log | Date | Mon, 11 Nov 2019 08:51:56 +0800 |
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The min/max value of vdd_log is decide by pwm IO voltage and its resistors, the rk3399-firefly board's pwm regulator circuit is designed for IO voltage at 1.8V, while the board actually use 3.0V for IO, which at last lead to the min-microvolt to '430mV' instead of '800mV'.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com> ---
arch/arm64/boot/dts/rockchip/rk3399-firefly.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts index c706db0ee9ec..92de83dd4dbc 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts @@ -206,7 +206,7 @@ regulator-name = "vdd_log"; regulator-always-on; regulator-boot-on; - regulator-min-microvolt = <800000>; + regulator-min-microvolt = <430000>; regulator-max-microvolt = <1400000>; vin-supply = <&vcc_sys>; }; -- 2.17.1
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