From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH v8 1/2] drivers/gpio: Altera soft IP GPIO driver device tree binding Date: Wed, 24 Dec 2014 00:22:24 -0800 Message-ID: <1419409345-8297-2-git-send-email-thloh@altera.com> References: <1419409345-8297-1-git-send-email-thloh@altera.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1419409345-8297-1-git-send-email-thloh-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Linus Walleij , Alexandre Courbot , Grant Likely , Andrew Morton , "David S. Miller" , Greg Kroah-Hartman , Joe Perches , Mauro Carvalho Chehab , Antti Palosaari , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Dinh Nguyen , Tien Hock Loh List-Id: devicetree@vger.kernel.org From: Tien Hock Loh Adds a new driver device tree binding for Altera soft GPIO IP Signed-off-by: Tien Hock Loh --- .../devicetree/bindings/gpio/gpio-altera.txt | 43 ++++++++++++++++++++ 1 files changed, 43 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-altera.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-altera.txt b/Documentation/devicetree/bindings/gpio/gpio-altera.txt new file mode 100644 index 0000000..649fa02 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-altera.txt @@ -0,0 +1,43 @@ +Altera GPIO controller bindings + +Required properties: +- compatible: + - "altr,pio-1.0" +- reg: Physical base address and length of the controller's registers. +- #gpio-cells : Should be 2 + - The first cell is the gpio offset number. + - The second cell is reserved and is currently unused. +- gpio-controller : Marks the device node as a GPIO controller. +- interrupt-controller: Mark the device node as an interrupt controller +- #interrupt-cells : Should be 1. The interrupt type is fixed in the hardware. + - The first cell is the GPIO offset number within the GPIO controller. +- interrupts: Specify the interrupt. +- altr,interrupt-trigger: Specifies the interrupt trigger type the GPIO + hardware is synthesized. This field is required if the Altera GPIO controller + used has IRQ enabled as the interrupt type is not software controlled, + but hardware synthesized. Required if GPIO is used as an interrupt + controller. The value is defined in + Only the following flags are supported: + IRQ_TYPE_EDGE_RISING + IRQ_TYPE_EDGE_FALLING + IRQ_TYPE_EDGE_BOTH + IRQ_TYPE_LEVEL_HIGH + +Optional properties: +- altr,ngpio: Width of the GPIO bank. This defines how many pins the + GPIO device has. Ranges between 1-32. Optional and defaults to 32 is not + specified. + +Example: + +gpio_altr: gpio@0xff200000 { + compatible = "altr,pio-1.0"; + reg = <0xff200000 0x10>; + interrupts = <0 45 4>; + altr,ngpio = <32>; + altr,interrupt_trigger = ; + #gpio-cells = <1>; + gpio-controller; + #interrupt-cells = <1>; + interrupt-controller; +}; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html