projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| f9367793 WC |
1 | CSR SiRFatlas7 GPIO controller bindings |
| 2 | ||
| 3 | Required properties: | |
| 4 | - compatible : "sirf,atlas7-gpio" | |
| 5 | - reg : Address range of the pinctrl registers | |
| 6 | - interrupts : Interrupts used by every GPIO group | |
| 7 | - gpio-banks : How many gpio banks on this controller | |
| 8 | - gpio-controller : Indicates this device is a GPIO controller | |
| 9 | - interrupt-controller : Marks the device node as an interrupt controller | |
| 10 | ||
| 11 | The GPIO controller also acts as an interrupt controller. It uses the default | |
| 12 | two cells specifier as described in Documentation/devicetree/bindings/ | |
| 13 | interrupt-controller/interrupts.txt. | |
| 14 | ||
| 15 | Example: | |
| 16 | ||
| 17 | gpio_0: gpio_mediam@17040000 { | |
| 18 | compatible = "sirf,atlas7-gpio"; | |
| 19 | reg = <0x17040000 0x1000>; | |
| 20 | interrupts = <0 13 0>, <0 14 0>; | |
| 21 | ||
| 22 | #gpio-cells = <2>; | |
| 23 | #interrupt-cells = <2>; | |
| 24 | ||
| 25 | gpio-controller; | |
| 26 | interrupt-controller; | |
| 27 | ||
| 28 | gpio-banks = <2>; | |
| 29 | gpio-ranges = <&pinctrl 0 0 0>, | |
| 30 | <&pinctrl 32 0 0>; | |
| 31 | gpio-ranges-group-names = "lvds_gpio_grp", | |
| 32 | "uart_nand_gpio_grp"; | |
| 33 | }; | |
| 34 | ||
| 35 | leds { | |
| 36 | compatible = "gpio-leds"; | |
| 37 | ||
| 38 | led1 { | |
| 39 | gpios = <&gpio_1 15 0>; | |
| 40 | ... | |
| 41 | }; | |
| 42 | ||
| 43 | led2 { | |
| 44 | gpios = <&gpio_2 34 0>; | |
| 45 | ... | |
| 46 | }; | |
| 47 | }; | |
| 48 | ||
| 49 | Please refer to gpio.txt in this directory for details of the common | |
| 50 | gpio properties used by devices. |