32 строки
1.5 KiB
Plaintext
32 строки
1.5 KiB
Plaintext
Nomadik GPIO controller
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Required properties:
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- compatible : Should be "st,nomadik-gpio".
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- reg : Physical base address and length of the controller's registers.
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- interrupts : The interrupt outputs from the controller.
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- #gpio-cells : Should be two:
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The first cell is the pin number.
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The second cell is used to specify optional parameters:
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- bits[3:0] trigger type and level flags:
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1 = low-to-high edge triggered.
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2 = high-to-low edge triggered.
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4 = active high level-sensitive.
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8 = active low level-sensitive.
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- gpio-controller : Marks the device node as a GPIO controller.
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- interrupt-controller : Marks the device node as an interrupt controller.
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- gpio-bank : Specifies which bank a controller owns.
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- st,supports-sleepmode : Specifies whether controller can sleep or not
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Example:
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gpio1: gpio@8012e080 {
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compatible = "st,nomadik-gpio";
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reg = <0x8012e080 0x80>;
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interrupts = <0 120 0x4>;
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#gpio-cells = <2>;
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gpio-controller;
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interrupt-controller;
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st,supports-sleepmode;
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gpio-bank = <1>;
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};
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