1 ARM Versatile Express Serial Configuration Con 1 ARM Versatile Express Serial Configuration Controller
2 ---------------------------------------------- 2 -----------------------------------------------------
3 3
4 Test chips for ARM Versatile Express platform 4 Test chips for ARM Versatile Express platform implement SCC (Serial
5 Configuration Controller) interface, used to s 5 Configuration Controller) interface, used to set initial conditions
6 for the test chip. 6 for the test chip.
7 7
8 In some cases its registers are also mapped in 8 In some cases its registers are also mapped in normal address space
9 and can be used to obtain runtime information 9 and can be used to obtain runtime information about the chip internals
10 (like silicon temperature sensors) and as inte 10 (like silicon temperature sensors) and as interface to other subsystems
11 like platform configuration control and power 11 like platform configuration control and power management.
12 12
13 Required properties: 13 Required properties:
14 14
15 - compatible value: "arm,vexpress-scc,<model>" 15 - compatible value: "arm,vexpress-scc,<model>", "arm,vexpress-scc";
16 where <model> is the full 16 where <model> is the full tile model name (as used
17 in the tile's Technical Re 17 in the tile's Technical Reference Manual),
18 eg. for Coretile Express A 18 eg. for Coretile Express A15x2 A7x3 (V2P-CA15_A7):
19 compatible = "arm,vexpress-scc,v2p-ca1 19 compatible = "arm,vexpress-scc,v2p-ca15_a7", "arm,vexpress-scc";
20 20
21 Optional properties: 21 Optional properties:
22 22
23 - reg: when the SCC is memory mapped, physical 23 - reg: when the SCC is memory mapped, physical address and size of the
24 registers window 24 registers window
25 - interrupts: when the SCC can generate a syst 25 - interrupts: when the SCC can generate a system-level interrupt
26 26
27 Example: 27 Example:
28 28
29 scc@7fff0000 { 29 scc@7fff0000 {
30 compatible = "arm,vexpress-scc 30 compatible = "arm,vexpress-scc,v2p-ca15_a7", "arm,vexpress-scc";
31 reg = <0 0x7fff0000 0 0x1000>; 31 reg = <0 0x7fff0000 0 0x1000>;
32 interrupts = <0 95 4>; 32 interrupts = <0 95 4>;
33 }; 33 };
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