0001 STMicroelectronics Co-Processor Bindings
0002 ----------------------------------------
0003
0004 This binding provides support for adjunct processors found on ST SoCs.
0005
0006 Co-processors can be controlled from the bootloader or the primary OS. If
0007 the bootloader starts a co-processor, the primary OS must detect its state
0008 and act accordingly.
0009
0010 Required properties:
0011 - compatible Should be one of:
0012 "st,st231-rproc"
0013 "st,st40-rproc"
0014 - memory-region Reserved memory (See: ../reserved-memory/reserved-memory.txt)
0015 - resets Reset lines (See: ../reset/reset.txt)
0016 - reset-names Must be "sw_reset" and "pwr_reset"
0017 - clocks Clock for co-processor (See: ../clock/clock-bindings.txt)
0018 - clock-frequency Clock frequency to set co-processor at if the bootloader
0019 hasn't already done so
0020 - st,syscfg System configuration register which holds the boot vector
0021 for the co-processor
0022 1st cell: Phandle to syscon block
0023 2nd cell: Boot vector register offset
0024
0025 Example:
0026
0027 audio_reserved: rproc@42000000 {
0028 compatible = "shared-dma-pool";
0029 reg = <0x42000000 0x01000000>;
0030 no-map;
0031 };
0032
0033 st231-audio {
0034 compatible = "st,st231-rproc";
0035 memory-region = <&audio_reserved>;
0036 resets = <&softreset STIH407_ST231_AUD_SOFTRESET>;
0037 reset-names = "sw_reset";
0038 clocks = <&clk_s_c0_flexgen CLK_ST231_AUD_0>;
0039 clock-frequency = <600000000>;
0040 st,syscfg = <&syscfg_core 0x228>;
0041 };
