Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) Samsung Exynos4 GPIO Controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) - compatible: Compatible property value should be "samsung,exynos4-gpio>".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) - reg: Physical base address of the controller and length of memory mapped
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)   region.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) - #gpio-cells: Should be 4. The syntax of the gpio specifier used by client nodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)   should be the following with values derived from the SoC user manual.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)      <[phandle of the gpio controller node]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)       [pin number within the gpio controller]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)       [mux function]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)       [flags and pull up/down]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)       [drive strength]>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)   Values for gpio specifier:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)   - Pin number: is a value between 0 to 7.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)   - Flags and Pull Up/Down: 0 - Pull Up/Down Disabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)                             1 - Pull Down Enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)                             3 - Pull Up Enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)           Bit 16 (0x00010000) - Input is active low.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)   - Drive Strength: 0 - 1x,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)                     1 - 3x,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)                     2 - 2x,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)                     3 - 4x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) - gpio-controller: Specifies that the node is a gpio controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) - #address-cells: should be 1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) - #size-cells: should be 1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	gpa0: gpio-controller@11400000 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		#address-cells = <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		#size-cells = <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		compatible = "samsung,exynos4-gpio";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		reg = <0x11400000 0x20>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		#gpio-cells = <4>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		gpio-controller;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	};