xref: /linux/Documentation/devicetree/bindings/mips/mscc.txt (revision 95298d63c67673c654c08952672d016212b26054) 
1* Microsemi MIPS CPUs
2
3Boards with a SoC of the Microsemi MIPS family shall have the following
4properties:
5
6Required properties:
7- compatible: "mscc,ocelot"
8
9
10* Other peripherals:
11
12o CPU chip regs:
13
14The SoC has a few registers (DEVCPU_GCB:CHIP_REGS) handling miscellaneous
15functionalities: chip ID, general purpose register for software use, reset
16controller, hardware status and configuration, efuses.
17
18Required properties:
19- compatible: Should be "mscc,ocelot-chip-regs", "simple-mfd", "syscon"
20- reg : Should contain registers location and length
21
22Example:
23	syscon@71070000 {
24		compatible = "mscc,ocelot-chip-regs", "simple-mfd", "syscon";
25		reg = <0x71070000 0x1c>;
26	};
27
28
29o CPU system control:
30
31The SoC has a few registers (ICPU_CFG:CPU_SYSTEM_CTRL) handling configuration of
32the CPU: 8 general purpose registers, reset control, CPU en/disabling, CPU
33endianness, CPU bus control, CPU status.
34
35Required properties:
36- compatible: Should be "mscc,ocelot-cpu-syscon", "syscon"
37- reg : Should contain registers location and length
38
39Example:
40	syscon@70000000 {
41		compatible = "mscc,ocelot-cpu-syscon", "syscon";
42		reg = <0x70000000 0x2c>;
43	};
44
45o HSIO regs:
46
47The SoC has a few registers (HSIO) handling miscellaneous functionalities:
48configuration and status of PLL5, RCOMP, SyncE, SerDes configurations and
49status, SerDes muxing and a thermal sensor.
50
51Required properties:
52- compatible: Should be "mscc,ocelot-hsio", "syscon", "simple-mfd"
53- reg : Should contain registers location and length
54
55Example:
56	syscon@10d0000 {
57		compatible = "mscc,ocelot-hsio", "syscon", "simple-mfd";
58		reg = <0x10d0000 0x10000>;
59	};
60