From 285cbdd9f52526842986ecb77b8f35788299a5f8 Mon Sep 17 00:00:00 2001 From: Frank Wunderlich Date: Fri, 20 Dec 2024 17:38:35 +0100 Subject: [PATCH] arm64: dts: mediatek: mt7988a-bpi-r4: Add MediaTek MT6682A/RT5190A PMIC Bananapi R4 Board contains a MT6682A pmic which is compatible to rt5190a. Add its node to the i2 controller. The BananaPi R4 board has a MediaTek MT6682A PMIC, a rebrand of the Richtek RT5190A chip, connected to the I2C0 bus. Add the relevant node and, while at it, also configure the regulators from this PMIC that are used on this board. Only Buck2/Buck3 voltage can be controlled by software. BUCK4 input is 5V from BUCK1 output, and the resistor (mapped to RP30/RP31 on BPI-R4) configures BUCK4 output to 1.8V. LDO input is 3.3V from 3.3VD, and the resistor (mapped to RP38/RP40 on BPI-R4) configures LDO output to 1.8V. Signed-off-by: Frank Wunderlich Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20241220163838.114786-2-linux@fw-web.de Signed-off-by: AngeloGioacchino Del Regno --- .../dts/mediatek/mt7988a-bananapi-bpi-r4.dts | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts index d6f1fca3323c..27edc6b84f80 100644 --- a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts +++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts @@ -3,6 +3,7 @@ /dts-v1/; #include +#include #include "mt7988a.dtsi" @@ -66,6 +67,55 @@ pinctrl-names = "default"; pinctrl-0 = <&i2c0_pins>; status = "okay"; + + rt5190a_64: rt5190a@64 { + compatible = "richtek,rt5190a"; + reg = <0x64>; + vin2-supply = <&rt5190_buck1>; + vin3-supply = <&rt5190_buck1>; + vin4-supply = <&rt5190_buck1>; + + regulators { + rt5190_buck1: buck1 { + regulator-name = "rt5190a-buck1"; + regulator-min-microvolt = <5090000>; + regulator-max-microvolt = <5090000>; + regulator-allowed-modes = + , ; + regulator-boot-on; + regulator-always-on; + }; + buck2 { + regulator-name = "vcore"; + regulator-min-microvolt = <600000>; + regulator-max-microvolt = <1400000>; + regulator-boot-on; + regulator-always-on; + }; + rt5190_buck3: buck3 { + regulator-name = "vproc"; + regulator-min-microvolt = <600000>; + regulator-max-microvolt = <1400000>; + regulator-boot-on; + }; + buck4 { + regulator-name = "rt5190a-buck4"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-allowed-modes = + , ; + regulator-boot-on; + regulator-always-on; + }; + ldo { + regulator-name = "rt5190a-ldo"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-boot-on; + regulator-always-on; + }; + }; + }; }; &i2c2 { -- 2.50.1