1*6cb0e0f6SLee JonesSTMicroelectronics Co-Processor Bindings 2*6cb0e0f6SLee Jones---------------------------------------- 3*6cb0e0f6SLee Jones 4*6cb0e0f6SLee JonesThis binding provides support for adjunct processors found on ST SoCs. 5*6cb0e0f6SLee Jones 6*6cb0e0f6SLee JonesCo-processors can be controlled from the bootloader or the primary OS. If 7*6cb0e0f6SLee Jonesthe bootloader starts a co-processor, the primary OS must detect its state 8*6cb0e0f6SLee Jonesand act accordingly. 9*6cb0e0f6SLee Jones 10*6cb0e0f6SLee JonesRequired properties: 11*6cb0e0f6SLee Jones- compatible Should be one of: 12*6cb0e0f6SLee Jones "st,st231-rproc" 13*6cb0e0f6SLee Jones "st,st40-rproc" 14*6cb0e0f6SLee Jones- memory-region Reserved memory (See: ../reserved-memory/reserved-memory.txt) 15*6cb0e0f6SLee Jones- resets Reset lines (See: ../reset/reset.txt) 16*6cb0e0f6SLee Jones- reset-names Must be "sw_reset" and "pwr_reset" 17*6cb0e0f6SLee Jones- clocks Clock for co-processor (See: ../clock/clock-bindings.txt) 18*6cb0e0f6SLee Jones- clock-frequency Clock frequency to set co-processor at if the bootloader 19*6cb0e0f6SLee Jones hasn't already done so 20*6cb0e0f6SLee Jones- st,syscfg System configuration register which holds the boot vector 21*6cb0e0f6SLee Jones for the co-processor 22*6cb0e0f6SLee Jones 1st cell: Phandle to syscon block 23*6cb0e0f6SLee Jones 2nd cell: Boot vector register offset 24*6cb0e0f6SLee Jones 25*6cb0e0f6SLee JonesExample: 26*6cb0e0f6SLee Jones 27*6cb0e0f6SLee Jones audio_reserved: rproc@42000000 { 28*6cb0e0f6SLee Jones compatible = "shared-dma-pool"; 29*6cb0e0f6SLee Jones reg = <0x42000000 0x01000000>; 30*6cb0e0f6SLee Jones no-map; 31*6cb0e0f6SLee Jones }; 32*6cb0e0f6SLee Jones 33*6cb0e0f6SLee Jones st231-audio { 34*6cb0e0f6SLee Jones compatible = "st,st231-rproc"; 35*6cb0e0f6SLee Jones memory-region = <&audio_reserved>; 36*6cb0e0f6SLee Jones resets = <&softreset STIH407_ST231_AUD_SOFTRESET>; 37*6cb0e0f6SLee Jones reset-names = "sw_reset"; 38*6cb0e0f6SLee Jones clocks = <&clk_s_c0_flexgen CLK_ST231_AUD_0>; 39*6cb0e0f6SLee Jones clock-frequency = <600000000>; 40*6cb0e0f6SLee Jones st,syscfg = <&syscfg_core 0x228>; 41*6cb0e0f6SLee Jones }; 42