On rk3399-roc-pc board a voltage regulator MP8859 from Monolithic Power Systems is used to supply the 12V power line. This delivers 5V as a default value after boot. The voltage is controllable via I2C. Add a basic driver to set and get the voltage of the MP8859 and add a matching node with fixed 12V in the DT of the board. Markus Reichl (5): regulator: mp8859: add driver regulator: mp8859: add config option and build entry dt-bindings: add vendor Monolithic Power Systems dt-bindings: regulator: add MPS mp8859 voltage regulator arm64: dts: rockchip: Enable mp8859 regulator on rk3399-roc-pc .../devicetree/bindings/regulator/mp8859.txt | 22 +++ .../devicetree/bindings/vendor-prefixes.yaml | 2 + .../boot/dts/rockchip/rk3399-roc-pc.dtsi | 32 ++-- drivers/regulator/Kconfig | 11 ++ drivers/regulator/Makefile | 1 + drivers/regulator/mp8859.c | 156 ++++++++++++++++++ 6 files changed, 210 insertions(+), 14 deletions(-) create mode 100644 Documentation/devicetree/bindings/regulator/mp8859.txt create mode 100644 drivers/regulator/mp8859.c -- 2.24.1
