From mboxrd@z Thu Jan 1 00:00:00 1970 From: hkallweit1@gmail.com (Heiner Kallweit) Date: Wed, 17 May 2017 22:16:35 +0200 Subject: [PATCH RfC v3 2/7] pinctrl: meson: document GPIO IRQ driver DT binding In-Reply-To: <16950080-b19d-e25c-fb48-bc79cfe4acc0@gmail.com> References: <16950080-b19d-e25c-fb48-bc79cfe4acc0@gmail.com> Message-ID: <7c09969b-ac04-cfa4-7459-7ad25b7c5cbf@gmail.com> To: linus-amlogic@lists.infradead.org List-Id: linus-amlogic.lists.infradead.org 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 --- 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 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 at 9880 { + compatible = "amlogic,meson-gpio-interrupt"; + reg = <0x0 0x09880 0x0 0x10>; + interrupts = , + , + , + , + , + , + , + ; + }; -- 2.13.0