This patch adds documentation for the max7360 bindings. The max7360 is Multi-functional Device containing gpio, keypad, pwm and rotary encoder submodules.
Signed-off-by: Andrei Dranitca <andrei_drani...@mentor.com> Signed-off-by: Valentin Sitdikov <valentin_sitdi...@mentor.com> --- Documentation/devicetree/bindings/mfd/max7360.txt | 74 +++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/max7360.txt diff --git a/Documentation/devicetree/bindings/mfd/max7360.txt b/Documentation/devicetree/bindings/mfd/max7360.txt new file mode 100644 index 0000000..c2ceaf9 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/max7360.txt @@ -0,0 +1,74 @@ +* Maxim MAX7360 Multi-function Device + +The Maxim MAX7360 is a Multi-function Device which includes +64 key switches, 8 LED drivers/GPIOs, PWM intensity control, +and rotary switch control. + +Required properties: +- compatible: Should be the following: "maxim,max7360". +- reg: Specifies the I2C slave address of the max7360 block. + It can be 0x38, 0x3a, 0x3c or 0x3e IIUC. + +Optional properties: +- interrupt-parent: Specifies the phandle of the interrupt controller to + which the interrupts from MAX7360 are routed to. +- interrupts: List of IRQ lines specifiers. +- interrupt-names: List of "inti" and "intk". +- interrupt-controller: Identifies the device as an interrupt controller. +- #interrupt-cells : Number of cells to encode an interrupt source, + shall be 1. + +Examples: + +Without subnodes: + max7360@38 { + compatible = "maxim,max7360"; + reg = <0x38>; + interrupt-parent = <&gpio1>; + interrupts = <23 IRQ_TYPE_LEVEL_LOW>, <23 IRQ_TYPE_LEVEL_LOW>; + interrupt-names = "inti", "intk"; + interrupt-controller; + #interrupt-cells = <0x1>; + }; + +With subnodes: + max7360@38 { + compatible = "maxim,max7360"; + reg = <0x38>; + interrupt-parent = <&gpio1>; + interrupts = <23 IRQ_TYPE_LEVEL_LOW>, <23 IRQ_TYPE_LEVEL_LOW>; + interrupt-names = "inti", "intk"; + interrupt-controller; + #interrupt-cells = <0x1>; + + gpio { + compatible = "maxim,max7360-gpio"; + gpio-controller; + #gpio-cells = <0x2>; + interrupt-controller; + #interrupt-cells = <0x2>; + interrupts = <0>; + }; + + keypad { + compatible = "maxim,max7360-keypad"; + maxim,debounce_reg = /bits/ 8 <0xef>; + maxim,ports_reg = /bits/ 8 <0xae>; + linux,keymap = < MATRIX_KEY(0, 0, KEY_F5) + MATRIX_KEY(1, 0, KEY_F4) >; + keypad,num-rows = <2>; + keypad,num-columns = <1>; + interrupts = <1>; + }; + + pwm { + compatible = "maxim,max7360-pwm"; + #pwm-cells = <0x2>; + }; + + rotary-encoder { + compatible = "maxim,max7360-rotary"; + interrupts = <2>; + }; + + }; -- 2.9.3