39 lines
1.1 KiB
Plaintext
39 lines
1.1 KiB
Plaintext
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Bindings for the National Instruments 169445 GPIO NAND controller
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The 169445 GPIO NAND controller has two memory mapped GPIO registers, one
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for input (the ready signal) and one for output (control signals). It is
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intended to be used with the GPIO NAND driver.
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Required properties:
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- compatible: should be "ni,169445-nand-gpio"
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- reg-names: must contain
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"dat" - data register
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- reg: address + size pairs describing the GPIO register sets;
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order must correspond with the order of entries in reg-names
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- #gpio-cells: must be set to 2. The first cell is the pin number and
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the 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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Optional properties:
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- no-output: disables driving output on the pins
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Examples:
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gpio1: nand-gpio-out@1f300010 {
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compatible = "ni,169445-nand-gpio";
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reg = <0x1f300010 0x4>;
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reg-names = "dat";
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gpio-controller;
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#gpio-cells = <2>;
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};
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gpio2: nand-gpio-in@1f300014 {
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compatible = "ni,169445-nand-gpio";
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reg = <0x1f300014 0x4>;
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reg-names = "dat";
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gpio-controller;
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#gpio-cells = <2>;
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no-output;
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};
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