On Thu, Sep 17, 2020 at 11:01:52AM +0300, Matti Vaittinen wrote: > Add bindings for ROHM BD9576MUF and BD9573MUF PMICs. These > PMICs are primarily intended to be used to power the R-Car series > processors. They provide 6 power outputs, safety features and a > watchdog with two functional modes. > > Signed-off-by: Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx> > --- > .../bindings/mfd/rohm,bd9576-pmic.yaml | 129 ++++++++++++++++++ > 1 file changed, 129 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml > > diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml > new file mode 100644 > index 000000000000..f17d4d621585 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml > @@ -0,0 +1,129 @@ > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/mfd/rohm,bd9576-pmic.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: ROHM BD9576MUF and BD9573MUF Power Management Integrated Circuit bindings > + > +maintainers: > + - Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx> > + > +description: | > + BD9576MUF and BD9573MUF are power management ICs primarily intended for > + powering the R-Car series processors. > + The IC provides 6 power outputs with configurable sequencing and safety > + monitoring. A watchdog logic with slow ping/windowed modes is also included. > + > +properties: > + compatible: > + enum: > + - rohm,bd9576 > + - rohm,bd9573 > + > + reg: > + description: > + I2C slave address. > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + rohm,vout1-en-low: > + description: > + BD9576 and BD9573 VOUT1 regulator enable state can be individually > + controlled by a GPIO. This is dictated by state of vout1-en pin during > + the PMIC startup. If vout1-en is LOW during PMIC startup then the VOUT1 > + enable sate is controlled via this pin. Set this property if vout1-en > + is wired to be down at PMIC start-up. > + type: boolean > + > + rohm,vout1-en-gpios: > + description: > + GPIO specifier to specify the GPIO connected to vout1-en for vout1 ON/OFF > + state control. > + maxItems: 1 > + > + rohm,ddr-sel-low: > + description: > + The BD9576 and BD9573 output voltage for DDR can be selected by setting > + the ddr-sel pin low or high. Set this property if ddr-sel is grounded. > + type: boolean > + > + rohm,watchdog-enable-gpios: > + description: The GPIO line used to enable the watchdog. > + maxItems: 1 > + > + rohm,watchdog-ping-gpios: > + description: The GPIO line used to ping the watchdog. > + maxItems: 1 > + > + hw_margin_ms: Needs a vendor prefix. s/_/-/ > + minimum: 4 > + maximum: 4416 > + description: Watchog timeout in milliseconds Maybe the words in the description should be in the property name as I don't see how 'h/w margin' relates to 'watchdog timeout'. Is this a max and below is the min?: > + > + rohm,hw-margin-min-ms: > + minimum: 2 > + maximum: 220 > + description: > + Watchdog on these ICs can be configured in a window mode where the ping > + must come within certain time-window. Eg. too quick pinging will also > + trigger timeout. Specify the minimum delay between pings if you wish to > + use the window mode. Note, the maximum delay is internally configured as > + a certain multiple of this value so maximum delay can be only up to 15 > + times this value. For example for 73 ms short ping value the maximum > + timeout will be close to 1 sec. > + > + regulators: > + $ref: ../regulator/rohm,bd9576-regulator.yaml > + description: > + List of child nodes that specify the regulators. > + > +required: > + - compatible > + - reg > + - regulators > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + #include <dt-bindings/leds/common.h> > + i2c { > + #address-cells = <1>; > + #size-cells = <0>; > + pmic: pmic@30 { > + compatible = "rohm,bd9576"; > + reg = <0x30>; > + rohm,vout1-en-low; > + rohm,vout1-en-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; > + rohm,ddr-sel-low; > + rohm,watchdog-enable-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; > + rohm,watchdog-ping-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>; > + hw_margin_ms = <30>; > + rohm,hw-margin-min-ms = <4>; > + > + regulators { > + boost1: regulator-vd50 { > + regulator-name = "VD50"; > + }; > + buck1: regulator-vd18 { > + regulator-name = "VD18"; > + }; > + buck2: regulator-vdddr { > + regulator-name = "vdddr"; > + }; > + buck3: regulator-vd10 { > + regulator-name = "vd10"; > + }; > + ldo: regulator-voutl1 { > + regulator-name = "VOUTL1"; > + }; > + sw: regulator-vouts1 { > + regulator-name = "VOUTS1"; > + }; > + }; > + }; > + }; > -- > 2.21.0 > > > -- > Matti Vaittinen, Linux device drivers > ROHM Semiconductors, Finland SWDC > Kiviharjunlenkki 1E > 90220 OULU > FINLAND > > ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ > Simon says - in Latin please. > ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ > Thanks to Simon Glass for the translation =]
