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36 lines
1.3 KiB
36 lines
1.3 KiB
Xilinx Zynq GPIO controller Device Tree Bindings |
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Required properties: |
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- #gpio-cells : Should be two |
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- First cell is the GPIO line number |
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- Second cell is used to specify optional |
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parameters (unused) |
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- compatible : Should be "xlnx,zynq-gpio-1.0" or |
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"xlnx,zynqmp-gpio-1.0" or "xlnx,versal-gpio-1.0 |
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or "xlnx,pmc-gpio-1.0 |
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- clocks : Clock specifier (see clock bindings for details) |
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- gpio-controller : Marks the device node as a GPIO controller. |
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- interrupts : Interrupt specifier (see interrupt bindings for |
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details) |
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- interrupt-controller : Marks the device node as an interrupt controller. |
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- #interrupt-cells : Should be 2. The first cell is the GPIO number. |
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The second cell bits[3:0] is used to specify 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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- reg : Address and length of the register set for the device |
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Example: |
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gpio@e000a000 { |
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#gpio-cells = <2>; |
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compatible = "xlnx,zynq-gpio-1.0"; |
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clocks = <&clkc 42>; |
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gpio-controller; |
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interrupt-parent = <&intc>; |
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interrupts = <0 20 4>; |
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interrupt-controller; |
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#interrupt-cells = <2>; |
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reg = <0xe000a000 0x1000>; |
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};
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