Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) * Technologic Systems I2C-FPGA's GPIO controller bindings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) This bindings describes the GPIO controller for Technologic's FPGA core.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) TS-4900's FPGA encodes the GPIO state on 3 bits, whereas the TS-7970's FPGA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) uses 2 bits: it doesn't use a dedicated input bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) - compatible: Should be one of the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 		"technologic,ts4900-gpio"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 		"technologic,ts7970-gpio"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) - reg: Physical base address of the controller and length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)        of memory mapped region.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) - #gpio-cells: Should be two. The first cell is the pin number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) - gpio-controller: Marks the device node as a gpio controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) Optional property:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) - ngpios: Number of GPIOs this controller is instantiated with,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)   the default is 32. See gpio.txt for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) &i2c2 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	gpio8: gpio@28 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		compatible = "technologic,ts4900-gpio";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		reg = <0x28>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		#gpio-cells = <2>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		gpio-controller;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		ngpios = <32>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };