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43 lines
1.3 KiB
43 lines
1.3 KiB
Cadence GPIO controller bindings |
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Required properties: |
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- compatible: should be "cdns,gpio-r1p02". |
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- reg: the register base address and size. |
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- #gpio-cells: should be 2. |
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* first cell is the GPIO number. |
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* second cell specifies the GPIO flags, as defined in |
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<dt-bindings/gpio/gpio.h>. Only the GPIO_ACTIVE_HIGH |
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and GPIO_ACTIVE_LOW flags are supported. |
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- gpio-controller: marks the device as a GPIO controller. |
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- clocks: should contain one entry referencing the peripheral clock driving |
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the GPIO controller. |
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Optional properties: |
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- ngpios: integer number of gpio lines supported by this controller, up to 32. |
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- interrupts: interrupt specifier for the controllers interrupt. |
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- interrupt-controller: marks the device as an interrupt controller. When |
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defined, interrupts, interrupt-parent and #interrupt-cells |
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are required. |
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- interrupt-cells: should be 2. |
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* first cell is the GPIO number you want to use as an IRQ source. |
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* second cell specifies the IRQ type, as defined in |
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<dt-bindings/interrupt-controller/irq.h>. |
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Currently only level sensitive IRQs are supported. |
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Example: |
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gpio0: gpio-controller@fd060000 { |
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compatible = "cdns,gpio-r1p02"; |
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reg =<0xfd060000 0x1000>; |
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clocks = <&gpio_clk>; |
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interrupt-parent = <&gic>; |
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interrupts = <0 5 IRQ_TYPE_LEVEL_HIGH>; |
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gpio-controller; |
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#gpio-cells = <2>; |
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interrupt-controller; |
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#interrupt-cells = <2>; |
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};
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