diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/nxp,lpc1850-gpio.txt | 38 |
1 files changed, 29 insertions, 9 deletions
diff --git a/Documentation/devicetree/bindings/gpio/nxp,lpc1850-gpio.txt b/Documentation/devicetree/bindings/gpio/nxp,lpc1850-gpio.txt index eb7cdd69e10b..627efc78ecf2 100644 --- a/Documentation/devicetree/bindings/gpio/nxp,lpc1850-gpio.txt +++ b/Documentation/devicetree/bindings/gpio/nxp,lpc1850-gpio.txt @@ -3,12 +3,24 @@ NXP LPC18xx/43xx GPIO controller Device Tree Bindings Required properties: - compatible : Should be "nxp,lpc1850-gpio" -- reg : Address and length of the register set for the device -- clocks : Clock specifier (see clock bindings for details) -- gpio-controller : Marks the device node as a GPIO controller. -- #gpio-cells : Should be two - - First cell is the GPIO line number - - Second cell is used to specify polarity +- reg : List of addresses and lengths of the GPIO controller + register sets +- reg-names : Should be "gpio", "gpio-pin-ic", "gpio-group0-ic" and + "gpio-gpoup1-ic" +- clocks : Phandle and clock specifier pair for GPIO controller +- resets : Phandle and reset specifier pair for GPIO controller +- gpio-controller : Marks the device node as a GPIO controller +- #gpio-cells : Should be two: + - The first cell is the GPIO line number + - The second cell is used to specify polarity +- interrupt-controller : Marks the device node as an interrupt controller +- #interrupt-cells : Should be two: + - The first cell is an interrupt number within + 0..9 range, for GPIO pin interrupts it is equal + to 'nxp,gpio-pin-interrupt' property value of + GPIO pin configuration, 8 is for GPIO GROUP0 + interrupt, 9 is for GPIO GROUP1 interrupt + - The second cell is used to specify interrupt type Optional properties: - gpio-ranges : Mapping between GPIO and pinctrl @@ -19,21 +31,29 @@ Example: gpio: gpio@400f4000 { compatible = "nxp,lpc1850-gpio"; - reg = <0x400f4000 0x4000>; + reg = <0x400f4000 0x4000>, <0x40087000 0x1000>, + <0x40088000 0x1000>, <0x40089000 0x1000>; + reg-names = "gpio", "gpio-pin-ic", + "gpio-group0-ic", "gpio-gpoup1-ic"; clocks = <&ccu1 CLK_CPU_GPIO>; + resets = <&rgu 28>; gpio-controller; #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; gpio-ranges = <&pinctrl LPC_GPIO(0,0) LPC_PIN(0,0) 2>, ... <&pinctrl LPC_GPIO(7,19) LPC_PIN(f,5) 7>; }; gpio_joystick { - compatible = "gpio-keys-polled"; + compatible = "gpio-keys"; ... - button@0 { + button0 { ... + interrupt-parent = <&gpio>; + interrupts = <1 IRQ_TYPE_EDGE_BOTH>; gpios = <&gpio LPC_GPIO(4,8) GPIO_ACTIVE_LOW>; }; }; |