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