mirror of https://gitee.com/openkylin/linux.git
53 lines
1.6 KiB
Plaintext
53 lines
1.6 KiB
Plaintext
* Marvell PXA GPIO controller
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Required properties:
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- compatible : Should be "mrvl,pxa-gpio" or "mrvl,mmp-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-name : Should be the name of irq resource. Each interrupt
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binds its interrupt-name.
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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 one. It is the pin number.
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Example:
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gpio: gpio@d4019000 {
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compatible = "mrvl,mmp-gpio";
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reg = <0xd4019000 0x1000>;
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interrupts = <49>;
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interrupt-name = "gpio_mux";
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gpio-controller;
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#gpio-cells = <1>;
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interrupt-controller;
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#interrupt-cells = <1>;
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};
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* Marvell Orion GPIO Controller
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Required properties:
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- compatible : Should be "marvell,orion-gpio"
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- reg : Address and length of the register set for controller.
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- gpio-controller : So we know this is a gpio controller.
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- ngpio : How many gpios this controller has.
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- interrupts : Up to 4 Interrupts for the controller.
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Optional properties:
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- mask-offset : For SMP Orions, offset for Nth CPU
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Example:
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gpio0: gpio@10100 {
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compatible = "marvell,orion-gpio";
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#gpio-cells = <2>;
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gpio-controller;
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reg = <0x10100 0x40>;
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ngpio = <32>;
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interrupts = <35>, <36>, <37>, <38>;
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};
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