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1 | ARM Versatile Express Serial Configuration Controller | ||
2 | ----------------------------------------------------- | ||
3 | |||
4 | Test chips for ARM Versatile Express platform implement SCC (Serial | ||
5 | Configuration Controller) interface, used to set initial conditions | ||
6 | for the test chip. | ||
7 | |||
8 | In some cases its registers are also mapped in normal address space | ||
9 | and can be used to obtain runtime information about the chip internals | ||
10 | (like silicon temperature sensors) and as interface to other subsystems | ||
11 | like platform configuration control and power management. | ||
12 | |||
13 | Required properties: | ||
14 | |||
15 | - compatible value: "arm,vexpress-scc,<model>", "arm,vexpress-scc"; | ||
16 | where <model> is the full tile model name (as used | ||
17 | in the tile's Technical Reference Manual), | ||
18 | eg. for Coretile Express A15x2 A7x3 (V2P-CA15_A7): | ||
19 | compatible = "arm,vexpress-scc,v2p-ca15_a7", "arm,vexpress-scc"; | ||
20 | |||
21 | Optional properties: | ||
22 | |||
23 | - reg: when the SCC is memory mapped, physical address and size of the | ||
24 | registers window | ||
25 | - interrupts: when the SCC can generate a system-level interrupt | ||
26 | |||
27 | Example: | ||
28 | |||
29 | scc@7fff0000 { | ||
30 | compatible = "arm,vexpress-scc,v2p-ca15_a7", "arm,vexpress-scc"; | ||
31 | reg = <0 0x7fff0000 0 0x1000>; | ||
32 | interrupts = <0 95 4>; | ||
33 | }; | ||