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1e0ced0948
Fix the no. of gpio cells in pxa gpio binding documentation. The no. of gpio cells for the pxa gpio is actually 2. But is incorrectly specified as 1, in the binding documentation. From the driver code, the second cell specifies the standard flags as described in gpio.txt. Signed-off-by: Vijay Kumar B. <vijaykumar@zilogic.com> [fixed subject line] Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
48 lines
1.6 KiB
Text
48 lines
1.6 KiB
Text
* Marvell PXA GPIO controller
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Required properties:
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- compatible : Should be "intel,pxa25x-gpio", "intel,pxa26x-gpio",
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"intel,pxa27x-gpio", "intel,pxa3xx-gpio",
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"marvell,pxa93x-gpio", "marvell,mmp-gpio",
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"marvell,mmp2-gpio" or marvell,pxa1928-gpio.
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- reg : Address and length of the register set for the device
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- interrupts : Should be the port interrupt shared by all gpio pins.
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There're three gpio interrupts in arch-pxa, and they're gpio0,
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gpio1 and gpio_mux. There're only one gpio interrupt in arch-mmp,
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gpio_mux.
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- interrupt-names : Should be the names of irq resources. Each interrupt
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uses its own interrupt name, so there should be as many interrupt names
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as referenced interrupts.
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- interrupt-controller : Identifies the node as an interrupt controller.
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- #interrupt-cells: Specifies the number of cells needed to encode an
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interrupt source.
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- gpio-controller : Marks the device node as a gpio controller.
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- #gpio-cells : Should be two. The first cell is the pin number and
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the second cell is used to specify flags. See gpio.txt for possible
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values.
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Example for a MMP platform:
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gpio: gpio@d4019000 {
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compatible = "marvell,mmp-gpio";
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reg = <0xd4019000 0x1000>;
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interrupts = <49>;
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interrupt-names = "gpio_mux";
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gpio-controller;
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#gpio-cells = <2>;
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interrupt-controller;
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#interrupt-cells = <1>;
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};
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Example for a PXA3xx platform:
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gpio: gpio@40e00000 {
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compatible = "intel,pxa3xx-gpio";
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reg = <0x40e00000 0x10000>;
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interrupt-names = "gpio0", "gpio1", "gpio_mux";
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interrupts = <8 9 10>;
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gpio-controller;
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#gpio-cells = <0x2>;
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interrupt-controller;
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#interrupt-cells = <0x2>;
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};
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