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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/Documentation/devicetree/bindings/gpio/nxp,lpc1850-gpio.txt
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@@ -3,12 +3,24 @@
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 Required properties:
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 - compatible		: Should be "nxp,lpc1850-gpio"
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-- reg			: Address and length of the register set for the device
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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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-- #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 polarity
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+- reg			: List of addresses and lengths of the GPIO controller
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+			  register sets
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+- reg-names		: Should be "gpio", "gpio-pin-ic", "gpio-group0-ic" and
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+			  "gpio-gpoup1-ic"
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+- clocks		: Phandle and clock specifier pair for GPIO controller
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+- resets		: Phandle and reset specifier pair for GPIO controller
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+- gpio-controller	: Marks the device node as a GPIO controller
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+- #gpio-cells 		: Should be two:
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+			  - The first cell is the GPIO line number
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+			  - The second cell is used to specify polarity
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+- interrupt-controller	: Marks the device node as an interrupt controller
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+- #interrupt-cells	: Should be two:
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+			  - The first cell is an interrupt number within
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+			    0..9 range, for GPIO pin interrupts it is equal
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+			    to 'nxp,gpio-pin-interrupt' property value of
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+			    GPIO pin configuration, 8 is for GPIO GROUP0
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+			    interrupt, 9 is for GPIO GROUP1 interrupt
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+			  - The second cell is used to specify interrupt type
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 Optional properties:
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 - gpio-ranges		: Mapping between GPIO and pinctrl
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@@ -19,21 +31,29 @@
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 gpio: gpio@400f4000 {
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 	compatible = "nxp,lpc1850-gpio";
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-	reg = <0x400f4000 0x4000>;
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+	reg = <0x400f4000 0x4000>, <0x40087000 0x1000>,
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+	      <0x40088000 0x1000>, <0x40089000 0x1000>;
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+	reg-names = "gpio", "gpio-pin-ic",
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+		    "gpio-group0-ic", "gpio-gpoup1-ic";
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 	clocks = <&ccu1 CLK_CPU_GPIO>;
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+	resets = <&rgu 28>;
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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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 	gpio-ranges =	<&pinctrl LPC_GPIO(0,0)  LPC_PIN(0,0)  2>,
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 			...
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 			<&pinctrl LPC_GPIO(7,19) LPC_PIN(f,5)  7>;
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 };
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 gpio_joystick {
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-	compatible = "gpio-keys-polled";
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+	compatible = "gpio-keys";
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 	...
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-	button@0 {
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+	button0 {
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 		...
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+		interrupt-parent = <&gpio>;
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+		interrupts = <1 IRQ_TYPE_EDGE_BOTH>;
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 		gpios = <&gpio LPC_GPIO(4,8) GPIO_ACTIVE_LOW>;
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 	};
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 };