1*4882a593SmuzhiyunARM Versatile Express Serial Configuration Controller 2*4882a593Smuzhiyun----------------------------------------------------- 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunTest chips for ARM Versatile Express platform implement SCC (Serial 5*4882a593SmuzhiyunConfiguration Controller) interface, used to set initial conditions 6*4882a593Smuzhiyunfor the test chip. 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunIn some cases its registers are also mapped in normal address space 9*4882a593Smuzhiyunand can be used to obtain runtime information about the chip internals 10*4882a593Smuzhiyun(like silicon temperature sensors) and as interface to other subsystems 11*4882a593Smuzhiyunlike platform configuration control and power management. 12*4882a593Smuzhiyun 13*4882a593SmuzhiyunRequired properties: 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun- compatible value: "arm,vexpress-scc,<model>", "arm,vexpress-scc"; 16*4882a593Smuzhiyun where <model> is the full tile model name (as used 17*4882a593Smuzhiyun in the tile's Technical Reference Manual), 18*4882a593Smuzhiyun eg. for Coretile Express A15x2 A7x3 (V2P-CA15_A7): 19*4882a593Smuzhiyun compatible = "arm,vexpress-scc,v2p-ca15_a7", "arm,vexpress-scc"; 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunOptional properties: 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun- reg: when the SCC is memory mapped, physical address and size of the 24*4882a593Smuzhiyun registers window 25*4882a593Smuzhiyun- interrupts: when the SCC can generate a system-level interrupt 26*4882a593Smuzhiyun 27*4882a593SmuzhiyunExample: 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun scc@7fff0000 { 30*4882a593Smuzhiyun compatible = "arm,vexpress-scc,v2p-ca15_a7", "arm,vexpress-scc"; 31*4882a593Smuzhiyun reg = <0 0x7fff0000 0 0x1000>; 32*4882a593Smuzhiyun interrupts = <0 95 4>; 33*4882a593Smuzhiyun }; 34