From e4dae01bf08b754de79072441c357737220b873f Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Sat, 18 Jul 2020 00:00:48 +0800 Subject: [PATCH] ARM: dts: sunxi: bananapi-m2-plus-v1.2: Fix CPU supply voltages The Bananapi M2+ uses a GPIO line to change the effective resistance of the CPU supply regulator's feedback resistor network. The voltages described in the device tree were given directly by the vendor. This turns out to be slightly off compared to the real values. The updated voltages are based on calculations of the feedback resistor network, and verified down to three decimal places with a multi-meter. Fixes: 6eeb4180d4b9 ("ARM: dts: sunxi: h3-h5: Add Bananapi M2+ v1.2 device trees") Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20200717160053.31191-4-wens@kernel.org --- arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi b/arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi index a628b5ee72b6..235994a4a2eb 100644 --- a/arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi +++ b/arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi @@ -16,12 +16,12 @@ regulator-type = "voltage"; regulator-boot-on; regulator-always-on; - regulator-min-microvolt = <1100000>; - regulator-max-microvolt = <1300000>; + regulator-min-microvolt = <1108475>; + regulator-max-microvolt = <1308475>; regulator-ramp-delay = <50>; /* 4ms */ gpios = <&r_pio 0 1 GPIO_ACTIVE_HIGH>; /* PL1 */ gpios-states = <0x1>; - states = <1100000 0>, <1300000 1>; + states = <1108475 0>, <1308475 1>; }; };