diff options
Diffstat (limited to 'Documentation/devicetree/bindings/mfd')
| -rw-r--r-- | Documentation/devicetree/bindings/mfd/mxs-lradc.txt | 47 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/mfd/wm831x.txt | 81 |
2 files changed, 128 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/mxs-lradc.txt b/Documentation/devicetree/bindings/mfd/mxs-lradc.txt new file mode 100644 index 0000000..555fb11 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/mxs-lradc.txt @@ -0,0 +1,47 @@ +* Freescale MXS LRADC device driver + +Required properties: +- compatible: Should be "fsl,imx23-lradc" for i.MX23 SoC and "fsl,imx28-lradc" + for i.MX28 SoC +- reg: Address and length of the register set for the device +- interrupts: Should contain the LRADC interrupts + +Optional properties: +- fsl,lradc-touchscreen-wires: Number of wires used to connect the touchscreen + to LRADC. Valid value is either 4 or 5. If this + property is not present, then the touchscreen is + disabled. 5 wires is valid for i.MX28 SoC only. +- fsl,ave-ctrl: number of samples per direction to calculate an average value. + Allowed value is 1 ... 32, default is 4 +- fsl,ave-delay: delay between consecutive samples. Allowed value is + 2 ... 2048. It is used if 'fsl,ave-ctrl' > 1, counts at + 2 kHz and its default is 2 (= 1 ms) +- fsl,settling: delay between plate switch to next sample. Allowed value is + 1 ... 2047. It counts at 2 kHz and its default is + 10 (= 5 ms) + +Example for i.MX23 SoC: + + lradc@80050000 { + compatible = "fsl,imx23-lradc"; + reg = <0x80050000 0x2000>; + interrupts = <36 37 38 39 40 41 42 43 44>; + status = "okay"; + fsl,lradc-touchscreen-wires = <4>; + fsl,ave-ctrl = <4>; + fsl,ave-delay = <2>; + fsl,settling = <10>; + }; + +Example for i.MX28 SoC: + + lradc@80050000 { + compatible = "fsl,imx28-lradc"; + reg = <0x80050000 0x2000>; + interrupts = <10 14 15 16 17 18 19 20 21 22 23 24 25>; + status = "okay"; + fsl,lradc-touchscreen-wires = <5>; + fsl,ave-ctrl = <4>; + fsl,ave-delay = <2>; + fsl,settling = <10>; + }; diff --git a/Documentation/devicetree/bindings/mfd/wm831x.txt b/Documentation/devicetree/bindings/mfd/wm831x.txt new file mode 100644 index 0000000..9f8b743 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/wm831x.txt @@ -0,0 +1,81 @@ +Cirrus Logic/Wolfson Microelectronics wm831x PMICs + +System PMICs with a wide range of additional features. + +Required properties: + + - compatible : One of the following chip-specific strings: + "wlf,wm8310" + "wlf,wm8311" + "wlf,wm8312" + "wlf,wm8320" + "wlf,wm8321" + "wlf,wm8325" + "wlf,wm8326" + + - reg : I2C slave address when connected using I2C, chip select number + when using SPI. + + - gpio-controller : Indicates this device is a GPIO controller. + - #gpio-cells : Must be 2. The first cell is the pin number and the + second cell is used to specify optional parameters (currently unused). + + - interrupts : The interrupt line the IRQ signal for the device is + connected to. + - interrupt-parent : The parent interrupt controller. + + - interrupt-controller : wm831x devices contain interrupt controllers and + may provide interrupt services to other devices. + - #interrupt-cells: Must be 2. The first cell is the IRQ number, and the + second cell is the flags, encoded as the trigger masks from + ../interrupt-controller/interrupts.txt + +Optional sub-nodes: + - regulators : Contains sub-nodes for each of the regulators supplied by + the device. The regulators are bound using their names listed below: + + dcdc1 : DCDC1 + dcdc2 : DCDC2 + dcdc3 : DCDC3 + dcdc4 : DCDC3 + isink1 : ISINK1 + isink2 : ISINK2 + ldo1 : LDO1 + ldo2 : LDO2 + ldo3 : LDO3 + ldo4 : LDO4 + ldo5 : LDO5 + ldo7 : LDO7 + ldo11 : LDO11 + + The bindings details of each regulator can be found in: + ../regulator/regulator.txt + +Example: + +wm8310: pmic@36 { + compatible = "wlf,wm8310"; + reg = <0x36>; + + gpio-controller; + #gpio-cells = <2>; + + interrupts = <347>; + interrupt-parent = <&gic>; + + interrupt-controller; + #interrupt-cells = <2>; + + regulators { + dcdc1: dcdc1 { + regulator-name = "DCDC1"; + regulator-min-microvolt = <600000>; + regulator-max-microvolt = <600000>; + }; + ldo1: ldo1 { + regulator-name = "LDO1"; + regulator-min-microvolt = <1700000>; + regulator-max-microvolt = <1700000>; + }; + }; +}; |
