[1/3] arm64: dts: rockchip: Fix min voltage for rk3399-firefly vdd_log
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Message ID 20191111005158.25070-1-kever.yang@rock-chips.com
State New
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Series
  • [1/3] arm64: dts: rockchip: Fix min voltage for rk3399-firefly vdd_log
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Commit Message

Kever Yang Nov. 11, 2019, 12:51 a.m. UTC
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(-)

Comments

Heiko Stübner Nov. 18, 2019, 1:04 a.m. UTC | #1
Am Montag, 11. November 2019, 01:51:56 CET schrieb Kever Yang:
> 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>

applied for 5.6 (or maybe still 5.5)

Thanks
Heiko

Patch
diff mbox series

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>;
 	};