[PATCH 2/6] arm64: dts: allwinner: pinephone: Set ALDO3 to exactly 3v0
Samuel Holland
samuel at sholland.org
Thu Nov 5 00:41:31 EST 2020
ALDO3 is used as the power supply for the LRADC keys voltage divider,
in addition to supplying AVCC and VCC-PLL. While AVCC and VCC-PLL will
accept any voltage between 2v7 and 3v3, LRADC needs a precise 3v0 input
to maintain the expected 2:3 ratio between the internal 2v0 reference
voltage and the external supply.
Signed-off-by: Samuel Holland <samuel at sholland.org>
---
arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
index 48050bbd941d..57c89c3b71e9 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
@@ -270,8 +270,8 @@ ®_aldo2 {
®_aldo3 {
regulator-always-on;
- regulator-min-microvolt = <2700000>;
- regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3000000>;
+ regulator-max-microvolt = <3000000>;
regulator-name = "vcc-pll-avcc";
};
--
2.26.2
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