| ARM Versatile Express Serial Configuration Controller |
| ----------------------------------------------------- |
| |
| Test chips for ARM Versatile Express platform implement SCC (Serial |
| Configuration Controller) interface, used to set initial conditions |
| for the test chip. |
| |
| In some cases its registers are also mapped in normal address space |
| and can be used to obtain runtime information about the chip internals |
| (like silicon temperature sensors) and as interface to other subsystems |
| like platform configuration control and power management. |
| |
| Required properties: |
| |
| - compatible value: "arm,vexpress-scc,<model>", "arm,vexpress-scc"; |
| where <model> is the full tile model name (as used |
| in the tile's Technical Reference Manual), |
| eg. for Coretile Express A15x2 A7x3 (V2P-CA15_A7): |
| compatible = "arm,vexpress-scc,v2p-ca15_a7", "arm,vexpress-scc"; |
| |
| Optional properties: |
| |
| - reg: when the SCC is memory mapped, physical address and size of the |
| registers window |
| - interrupts: when the SCC can generate a system-level interrupt |
| |
| Example: |
| |
| scc@7fff0000 { |
| compatible = "arm,vexpress-scc,v2p-ca15_a7", "arm,vexpress-scc"; |
| reg = <0 0x7fff0000 0 0x1000>; |
| interrupts = <0 95 4>; |
| }; |