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28 lines
769 B
28 lines
769 B
Cirrus Logic CLPS711X GPIO controller |
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Required properties: |
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- compatible: Should be "cirrus,ep7209-gpio" |
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- reg: Physical base GPIO controller registers location and length. |
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There should be two registers, first is DATA register, the second |
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is DIRECTION. |
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- gpio-controller: Marks the device node as a gpio controller. |
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- #gpio-cells: Should be two. 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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Note: Each GPIO port should have an alias correctly numbered in "aliases" |
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node. |
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Example: |
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aliases { |
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gpio0 = &porta; |
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}; |
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porta: gpio@80000000 { |
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compatible = "cirrus,ep7312-gpio","cirrus,ep7209-gpio"; |
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reg = <0x80000000 0x1>, <0x80000040 0x1>; |
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gpio-controller; |
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#gpio-cells = <2>; |
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};
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