On Sun, May 07, 2017 at 06:34:09PM +0200, Heiner Kallweit wrote: > Document the DT binding for GPIO IRQ support on Amlogic Meson SoC's. > > This documentation is intentionally not placed under > interrupt-controllers as GPIO IRQ support on these SoC's acts more > like an interrupt multiplexer. > > Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx> > --- > .../bindings/gpio/amlogic,meson-gpio-interrupt.txt | 30 ++++++++++++++++++++++ Seems more like an irqchip? > 1 file changed, 30 insertions(+) > create mode 100644 Documentation/devicetree/bindings/gpio/amlogic,meson-gpio-interrupt.txt > > diff --git a/Documentation/devicetree/bindings/gpio/amlogic,meson-gpio-interrupt.txt b/Documentation/devicetree/bindings/gpio/amlogic,meson-gpio-interrupt.txt > new file mode 100644 > index 00000000..35a052b8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/gpio/amlogic,meson-gpio-interrupt.txt > @@ -0,0 +1,30 @@ > +Amlogic meson GPIO interrupt controller > + > +Meson SoCs contains an interrupt controller which is able watch the SoC pads > +and generate an interrupt on edges or level. The controller is essentially a > +256 pads to 8 GIC interrupt multiplexer, with a filter block to select edge > +or level and polarity. We don't expose all 256 mux inputs because the > +documentation shows that upper part is not mapped to any pad. The actual number > +of interrupt exposed depends on the SoC. > + > +Required properties: > + > +- compatible : should be "amlogic,meson-gpio-interrupt", "syscon". Why syscon? > +- reg : Specifies base physical address and size of the registers. > +- interrupts : list of GIC interrupts which can be used with the > + GPIO IRQ multiplexer What about interrupt-controller property? > + > +Example: > + > +gpio_irq@9880 { interrupt-controller@... > + compatible = "amlogic,meson-gpio-interrupt", "syscon"; > + reg = <0x0 0x09880 0x0 0x10>; > + interrupts = <GIC_SPI 64 IRQ_TYPE_NONE>, > + <GIC_SPI 65 IRQ_TYPE_NONE>, > + <GIC_SPI 66 IRQ_TYPE_NONE>, > + <GIC_SPI 67 IRQ_TYPE_NONE>, > + <GIC_SPI 68 IRQ_TYPE_NONE>, > + <GIC_SPI 69 IRQ_TYPE_NONE>, > + <GIC_SPI 70 IRQ_TYPE_NONE>, > + <GIC_SPI 71 IRQ_TYPE_NONE>; > + }; > -- > 2.12.2 > > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html