| Message ID | 20190130084203.25053-2-wens@csie.org (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
| Series | arm64: dts: allwinner: h5: Enable CPU DVFS (cpufreq) | expand |
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 53edd1faee99..a567567763f4 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 @@ -16,13 +16,13 @@ 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 0x0 - 1300000 0x1>; + states = <1108475 0x0 + 1308475 0x1>; }; };
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 <wens@csie.org> --- arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)