Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) An i2c gate is useful to e.g. reduce the digital noise for RF tuners connected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) to the i2c bus. Gates are similar to arbitrators in that you need to perform
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) some kind of operation to access the i2c bus past the arbitrator/gate, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) there are no competing masters to consider for gates and therefore there is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) no arbitration happening for gates.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) Common i2c gate properties.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) - i2c-gate child node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) Required properties for the i2c-gate child node:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) - #address-cells = <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) - #size-cells = <0>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) Optional properties for i2c-gate child node:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) - Child nodes conforming to i2c bus binding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) Example :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	   An Invensense mpu9150 at address 0x68 featuring an on-chip Asahi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	   Kasei ak8975 compass behind a gate.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	mpu9150@68 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		compatible = "invensense,mpu9150";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		reg = <0x68>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		interrupt-parent = <&gpio1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		interrupts = <18 1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		i2c-gate {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 			#address-cells = <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 			#size-cells = <0>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 			ax8975@c {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 				compatible = "ak,ak8975";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 				reg = <0x0c>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 			};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	};