| Message ID | 1530798191-25471-3-git-send-email-sergio.paracuellos@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | gpio: mediatek: driver for gpio chip in MT7621 SoC | expand |
On Thu, Jul 05, 2018 at 03:43:11PM +0200, Sergio Paracuellos wrote: > Add a devicetree binding documentation for the mt7621 gpio. > > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> > Reviewed-by: NeilBrown <neil@brown.name> > --- > .../bindings/gpio/mediatek,mt7621-gpio.txt | 35 ++++++++++++++++++++++ > 1 file changed, 35 insertions(+) > create mode 100644 Documentation/devicetree/bindings/gpio/mediatek,mt7621-gpio.txt Reviewed-by: Rob Herring <robh@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Thu, Jul 5, 2018 at 3:43 PM Sergio Paracuellos <sergio.paracuellos@gmail.com> wrote: > Add a devicetree binding documentation for the mt7621 gpio. > > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> > Reviewed-by: NeilBrown <neil@brown.name> Patch applied with Rob's review tag. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, Jul 09, 2018 at 01:37:09PM +0200, Linus Walleij wrote: > On Thu, Jul 5, 2018 at 3:43 PM Sergio Paracuellos > <sergio.paracuellos@gmail.com> wrote: > > > Add a devicetree binding documentation for the mt7621 gpio. > > > > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> > > Reviewed-by: NeilBrown <neil@brown.name> > > Patch applied with Rob's review tag. Thanks for let me know, Linus. > > Yours, > Linus Walleij Best regards, Sergio Paracuellos -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/gpio/mediatek,mt7621-gpio.txt b/Documentation/devicetree/bindings/gpio/mediatek,mt7621-gpio.txt new file mode 100644 index 0000000..ba45558 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/mediatek,mt7621-gpio.txt @@ -0,0 +1,35 @@ +Mediatek MT7621 SoC GPIO controller bindings + +The IP core used inside these SoCs has 3 banks of 32 GPIOs each. +The registers of all the banks are interwoven inside one single IO range. +We load one GPIO controller instance per bank. Also the GPIO controller can receive +interrupts on any of the GPIOs, either edge or level. It then interrupts the CPU +using GIC INT12. + +Required properties for the top level node: +- #gpio-cells : Should be two. The first cell is the GPIO pin 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. +- #interrupt-cells : Specifies the number of cells needed to encode an + interrupt. Should be 2. The first cell defines the interrupt number, + the second encodes the triger flags encoded as described in + Documentation/devicetree/bindings/interrupt-controller/interrupts.txt +- compatible: + - "mediatek,mt7621-gpio" for Mediatek controllers +- reg : Physical base address and length of the controller's registers +- interrupt-parent : phandle of the parent interrupt controller. +- interrupts : Interrupt specifier for the controllers interrupt. +- interrupt-controller : Mark the device node as an interrupt controller. +- gpio-controller : Marks the device node as a GPIO controller. + +Example: + gpio@600 { + #gpio-cells = <2>; + #interrupt-cells = <2>; + compatible = "mediatek,mt7621-gpio"; + gpio-controller; + interrupt-controller; + reg = <0x600 0x100>; + interrupt-parent = <&gic>; + interrupts = <GIC_SHARED 12 IRQ_TYPE_LEVEL_HIGH>; + };