diff options
| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2013-05-21 13:40:06 +0200 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2013-06-12 21:48:09 +0900 |
| commit | 159f8a0209aff155af7f6fcdedd4a4484dd19c23 (patch) | |
| tree | 2c3081a053077cceffb1c1651b977846043d1e5f /Documentation/devicetree/bindings/gpio | |
| parent | 5fcf4a3c3a5bc08bf72a50ef1332501a3c1b96bb (diff) | |
gpio-rcar: Add DT support
Add DT bindings for the gpio-rcar driver and read the device
configuration from the DT node at probe time if available.
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt new file mode 100644 index 00000000000..46d76a00424 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt @@ -0,0 +1,52 @@ +* 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 is used to specify optional parameters as bit flags. Only the GPIO + active low flag (bit 0) is currently supported. + - gpio-ranges: Range of pins managed by the GPIO controller as a 4-cells + tuple using the following syntax. + + <[phandle of the pin controller node] + 0 + [index of the first pin] + [number of pins]> + +Please refer to gpio.txt in this directory for details of 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>; + }; |