On Tue, Jan 26, 2016 at 10:12:20AM +0100, Enric Balletbo i Serra wrote: > The UCS1002-2 provides a USB port power switch for precise control of up > to 2.5 amperes continuous current. > > You can add support to your board with current binding. > > Example: > > ucs1002: ucs1002@57 { > compatible = "microchip,ucs1002"; > reg = <0x57>; > microchip,pin-ignore; > }; > > Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx> > --- > .../devicetree/bindings/power/ucs1002.txt | 47 ++++++++++++++++++++++ > 1 file changed, 47 insertions(+) > create mode 100644 Documentation/devicetree/bindings/power/ucs1002.txt > > diff --git a/Documentation/devicetree/bindings/power/ucs1002.txt b/Documentation/devicetree/bindings/power/ucs1002.txt > new file mode 100644 > index 0000000..1b89f0a > --- /dev/null > +++ b/Documentation/devicetree/bindings/power/ucs1002.txt > @@ -0,0 +1,47 @@ > +UCS1002-2 Programmable USB Port Power Controller with Charger Emulation bindings > + > +Required properties: > +- compatible: "microchip,ucs1002" > +- reg: integer, the I2C address of the device. > + > +Required properties (if pin-ignore functionality is not set): > +- em-gpios: which GPIO to use for EM_EN pin. > +- pwr-gpios: which GPIO to use for PWR_EN pin. > +- m1-gpios: which GPIO to use for M1 pin. > +- m2-gpios: which GPIO to use for M2 pin. > + > +Optional properties: > +- interrupt-parent: the phandle of the interrupt controller that services > + interrupts for this device. > +- interrupts: interrupt specifiers for two interrupt sources. > + - First interrupt specifier is for A_DET interrupt. > + - Second interrupt specifier is for ALERT interrupt. > +- microchip,current-limit: integer, maximum current in mA. Note that the default mA or ... > + value is based on the resistor on the COMM_SEL/ILIM pin and this value cannot > + be changed to be higher than hardware set value. Accepted values are: 500000, > + 900000, 1000000, 1200000, 1500000, 1800000, 2000000, 2500000 (uA) uA? Either way append units (-microamps) > +- microchip,pin-ignore: boolean, if present uses I2C for configuration, otherwise, > + we must provide EM_EN, M1 and M2 gpio mapping. Wouldn't this be implied by absence of gpio properties? > + > +Example (poll): > + > + ucs1002: ucs1002@57 { > + compatible = "microchip,ucs1002"; > + reg = <0x57>; > + microchip,current-limit = <2000000>; > + microchip,pin-ignore; > + }; > + > +Example (interrupts + pin control): > + > + ucs1002: ucs1002@57 { > + compatible = "microchip,ucs1002"; > + reg = <0x57>; > + interrupt-parent = <&gpio0>; > + interrupts = <30 0>, <31 0>; > + microchip,current-limit = <2000000>; > + em-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>; > + m1-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>; > + m2-gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>; > + pwr-gpios = <&gpio1 19 0>; > + }; > -- > 2.1.0 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html