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38 lines
1.1 KiB
38 lines
1.1 KiB
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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