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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/Documentation/devicetree/bindings/gpio/gpio-altera.txt
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@@ -9,8 +9,9 @@
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   - The second cell is reserved and is currently unused.
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 - gpio-controller : Marks the device node as a GPIO controller.
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 - interrupt-controller: Mark the device node as an interrupt controller
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-- #interrupt-cells : Should be 1. The interrupt type is fixed in the hardware.
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+- #interrupt-cells : Should be 2. The interrupt type is fixed in the hardware.
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   - The first cell is the GPIO offset number within the GPIO controller.
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+  - The second cell is the interrupt trigger type and level flags.
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 - interrupts: Specify the interrupt.
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 - altr,interrupt-type: Specifies the interrupt trigger type the GPIO
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   hardware is synthesized. This field is required if the Altera GPIO controller
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@@ -38,6 +39,6 @@
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 	altr,interrupt-type = <IRQ_TYPE_EDGE_RISING>;
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 	#gpio-cells = <2>;
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 	gpio-controller;
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-	#interrupt-cells = <1>;
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+	#interrupt-cells = <2>;
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 	interrupt-controller;
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 };