From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiner Kallweit Subject: [PATCH 2/5] pintrl: meson: document GPIO IRQ DT binding Date: Sun, 7 May 2017 18:34:09 +0200 Message-ID: <0d835130-7c6c-751c-af15-c2ab69edcb42@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-gpio-owner@vger.kernel.org To: Jerome Brunet , Mark Rutland , Marc Zyngier , Linus Walleij Cc: devicetree@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-gpio@vger.kernel.org List-Id: devicetree@vger.kernel.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 --- .../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..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". +- 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", "syscon"; + reg = <0x0 0x09880 0x0 0x10>; + interrupts = , + , + , + , + , + , + , + ; + }; -- 2.12.2