From mboxrd@z Thu Jan 1 00:00:00 1970 From: thomas.petazzoni@free-electrons.com (Thomas Petazzoni) Date: Sat, 11 Aug 2012 15:31:43 +0200 Subject: [PATCH 2/5] Documentation: add description of DT binding for the gpio-mvebu driver In-Reply-To: <1344691906-15985-1-git-send-email-thomas.petazzoni@free-electrons.com> References: <1344691906-15985-1-git-send-email-thomas.petazzoni@free-electrons.com> Message-ID: <1344691906-15985-3-git-send-email-thomas.petazzoni@free-electrons.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: Thomas Petazzoni Cc: Grant Likely Cc: Linus Walleij Cc: Andrew Lunn Cc: Jason Cooper Cc: Gregory Clement --- .../devicetree/bindings/gpio/gpio-mvebu.txt | 44 ++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-mvebu.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-mvebu.txt b/Documentation/devicetree/bindings/gpio/gpio-mvebu.txt new file mode 100644 index 0000000..298436c --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-mvebu.txt @@ -0,0 +1,44 @@ +* Marvell EBU GPIO controller + +Required properties: + +- compatible : Should be "marvell,orion-gpio", "marvell,mv78200-gpio" + or "marvell,armadaxp-gpio". "marvell,orion-gpio" should be used for + Orion, Kirkwood, Dove, Discovery (except MV78200) and Armada + 370. "marvell,mv78200-gpio" should be used for the Discovery + MV78200. "marvel,armadaxp-gpio" should be used for all Armada XP + SoCs (MV78230, MV78260, MV78460). + +- reg: Address and length of the register set for the device. Only one + entry is expected, except for the "marvell,armadaxp-gpio" variant + for which two entries are expected: one for the general registers, + one for the per-cpu registers. + +- interrupts: The list of interrupts that are used for all the pins + managed by this GPIO bank. There can be more than one interrupt + (example: 1 interrupt per 8 pins on Armada XP, which means 4 + interrupts per bank of 32 GPIOs). + +- interrupt-controller: identifies the node as an interrupt controller + +- #interrupt-cells: specifies the number of celles needed to encode an + interrupt source + +- gpio-controller: marks the device node as a gpio controller + +- ngpios: number of GPIOs this controller has + +- #gpio-cells: Should be one. It is the pin number. + +Example: + + gpio0: gpio at d0018100 { + compatible = "marvell,armadaxp-gpio"; + reg = <0xd0018100 0x40>, + <0xd0018800 0x30>; + ngpios = <32>; + gpio-controller; + #gpio-cells = <1>; + interrupt-controller; + interrupts = <16>, <17>, <18>, <19>; + }; -- 1.7.9.5