"ti,k2g-gpio", "ti,keystone-gpio": for 66AK2G
"ti,am654-gpio", "ti,keystone-gpio": for TI K3 AM654
"ti,j721e-gpio", "ti,keystone-gpio": for J721E SoCs
+ "ti,am64-gpio", "ti,keystone-gpio": for AM64 SoCs
- reg: Physical base address of the controller and the size of memory mapped
registers.