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