1* System Controller Registers R/W driver 2 3System controller node represents a register region containing a set 4of miscellaneous registers. The registers are not cohesive enough to 5represent as any specific type of device. The typical use-case is for 6some other node's driver, or platform-specific code, to acquire a 7reference to the syscon node (e.g. by phandle, node path, or search 8using a specific compatible value), interrogate the node (or associated 9OS driver) to determine the location of the registers, and access the 10registers directly. 11 12Required properties: 13- compatible: Should contain "syscon". 14- reg: the register region can be accessed from syscon 15 16Optional property: 17- reg-io-width: the size (in bytes) of the IO accesses that should be 18 performed on the device. 19- hwlocks: reference to a phandle of a hardware spinlock provider node. 20 21Examples: 22gpr: iomuxc-gpr@20e0000 { 23 compatible = "fsl,imx6q-iomuxc-gpr", "syscon"; 24 reg = <0x020e0000 0x38>; 25 hwlocks = <&hwlock1 1>; 26}; 27 28hwlock1: hwspinlock@40500000 { 29 ... 30 reg = <0x40500000 0x1000>; 31 #hwlock-cells = <1>; 32}; 33