| Message ID | 7c09969b-ac04-cfa4-7459-7ad25b7c5cbf@gmail.com |
|---|---|
| State | New |
| Headers | show |
On Wed, May 17, 2017 at 10:16:35PM +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. I've not seen anything in the discussion that indicates this is a better fit as gpio. Seems to me multiple people including me have said this sounds like an interrupt controller. > > Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> > --- > v2: > - remove syscon > v3: > - no changes > --- > .../bindings/gpio/amlogic,meson-gpio-interrupt.txt | 30 ++++++++++++++++++++++ > 1 file changed, 30 insertions(+) > create mode 100644 Documentation/devicetree/bindings/gpio/amlogic,meson-gpio-interrupt.txt -- 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/amlogic,meson-gpio-interrupt.txt b/Documentation/devicetree/bindings/gpio/amlogic,meson-gpio-interrupt.txt new file mode 100644 index 00000000..ba7d3015 --- /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". +- reg : Specifies base physical address and size of the registers. +- interrupts : list of GIC interrupts which can be used with the + GPIO IRQ multiplexer + +Example: + +gpio_irq@9880 { + compatible = "amlogic,meson-gpio-interrupt"; + 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>; + };
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@gmail.com> --- v2: - remove syscon v3: - no changes --- .../bindings/gpio/amlogic,meson-gpio-interrupt.txt | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/amlogic,meson-gpio-interrupt.txt