forked from Minki/linux
33 lines
988 B
Plaintext
33 lines
988 B
Plaintext
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APM X-Gene Standby GPIO controller bindings
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This is a gpio controller in the standby domain.
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There are 20 GPIO pins from 0..21. There is no GPIO_DS14 or GPIO_DS15,
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only GPIO_DS8..GPIO_DS13 support interrupts. The IRQ mapping
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is currently 1-to-1 on interrupts 0x28 thru 0x2d.
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Required properties:
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- compatible: "apm,xgene-gpio-sb" for the X-Gene Standby GPIO controller
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- reg: Physical base address and size of the controller's registers
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- #gpio-cells: Should be two.
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- first cell is the pin number
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- second cell is used to specify the gpio polarity:
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0 = active high
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1 = active low
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- gpio-controller: Marks the device node as a GPIO controller.
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- interrupts: Shall contain exactly 6 interrupts.
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Example:
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sbgpio: sbgpio@17001000 {
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compatible = "apm,xgene-gpio-sb";
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reg = <0x0 0x17001000 0x0 0x400>;
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#gpio-cells = <2>;
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gpio-controller;
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interrupts = <0x0 0x28 0x1>,
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<0x0 0x29 0x1>,
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<0x0 0x2a 0x1>,
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<0x0 0x2b 0x1>,
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<0x0 0x2c 0x1>,
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<0x0 0x2d 0x1>;
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};
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