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* Renesas R-Car GPIO Controller
Required Properties:
- compatible: should be one of the following.
- "renesas,gpio-r8a7778": for R8A7778 (R-Mobile M1) compatible GPIO controller.
- "renesas,gpio-r8a7779": for R8A7779 (R-Car H1) compatible GPIO controller.
- "renesas,gpio-r8a7790": for R8A7790 (R-Car H2) compatible GPIO controller.
- "renesas,gpio-rcar": for generic R-Car GPIO controller.
- reg: Base address and length of each memory resource used by the GPIO
controller hardware module.
- interrupt-parent: phandle of the parent interrupt controller.
- interrupts: Interrupt specifier for the controllers interrupt.
- gpio-controller: Marks the device node as a gpio controller.
- #gpio-cells: Should be 2. The first cell is the GPIO number and the second
cell specifies GPIO flags, as defined in <dt-bindings/gpio/gpio.h>. Only the
GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW flags are supported.
- gpio-ranges: Range of pins managed by the GPIO controller.
Please refer to gpio.txt in this directory for details of gpio-ranges property
and the common GPIO bindings used by client devices.
Example: R8A7779 (R-Car H1) GPIO controller nodes
gpio0: gpio@ffc40000 {
compatible = "renesas,gpio-r8a7779", "renesas,gpio-rcar";
reg = <0xffc40000 0x2c>;
interrupt-parent = <&gic>;
interrupts = <0 141 0x4>;
#gpio-cells = <2>;
gpio-controller;
gpio-ranges = <&pfc 0 0 32>;
};
...
gpio6: gpio@ffc46000 {
compatible = "renesas,gpio-r8a7779", "renesas,gpio-rcar";
reg = <0xffc46000 0x2c>;
interrupt-parent = <&gic>;
interrupts = <0 147 0x4>;
#gpio-cells = <2>;
gpio-controller;
gpio-ranges = <&pfc 0 192 9>;
};
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