46 lines
1.3 KiB
Plaintext
46 lines
1.3 KiB
Plaintext
ImgTec TZ1090 PDC GPIO Controller
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Required properties:
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- compatible: Compatible property value should be "img,tz1090-pdc-gpio".
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- reg: Physical base address of the controller and length of memory mapped
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region. This starts at and cover the SOC_GPIO_CONTROL registers.
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- gpio-controller: Specifies that the node is a gpio controller.
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- #gpio-cells: Should be 2. The syntax of the gpio specifier used by client
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nodes should have the following values.
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<[phandle of the gpio controller node]
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[PDC gpio number]
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[gpio flags]>
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Values for gpio specifier:
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- GPIO number: a value in the range 0 to 6.
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- GPIO flags: bit field of flags, as defined in <dt-bindings/gpio/gpio.h>.
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Only the following flags are supported:
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GPIO_ACTIVE_HIGH
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GPIO_ACTIVE_LOW
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Optional properties:
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- gpio-ranges: Mapping to pin controller pins (as described in
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Documentation/devicetree/bindings/gpio/gpio.txt)
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- interrupts: Individual syswake interrupts (other GPIOs cannot interrupt)
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Example:
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pdc_gpios: gpio-controller@02006500 {
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gpio-controller;
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#gpio-cells = <2>;
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compatible = "img,tz1090-pdc-gpio";
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reg = <0x02006500 0x100>;
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interrupt-parent = <&pdc>;
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interrupts = <8 IRQ_TYPE_NONE>, /* Syswake 0 */
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<9 IRQ_TYPE_NONE>, /* Syswake 1 */
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<10 IRQ_TYPE_NONE>; /* Syswake 2 */
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gpio-ranges = <&pdc_pinctrl 0 0 7>;
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};
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