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1TI Wakeup M3 Remoteproc Driver2==============================3 4The TI AM33xx and AM43xx family of devices use a small Cortex M3 co-processor5(commonly referred to as Wakeup M3 or CM3) to help with various low power tasks6that cannot be controlled from the MPU. This CM3 processor requires a firmware7binary to accomplish this. The wkup_m3 remoteproc driver handles the loading of8the firmware and booting of the CM3.9 10Wkup M3 Device Node:11====================12A wkup_m3 device node is used to represent the Wakeup M3 processor instance13within the SoC. It is added as a child node of the parent interconnect bus14(l4_wkup) through which it is accessible to the MPU.15 16Required properties:17--------------------18- compatible: Should be one of,19 "ti,am3352-wkup-m3" for AM33xx SoCs20 "ti,am4372-wkup-m3" for AM43xx SoCs21- reg: Should contain the address ranges for the two internal22 memory regions, UMEM and DMEM. The parent node should23 provide an appropriate ranges property for properly24 translating these into bus addresses.25- reg-names: Contains the corresponding names for the two memory26 regions. These should be named "umem" & "dmem".27- ti,hwmods: Name of the hwmod associated with the wkupm3 device.28- ti,pm-firmware: Name of firmware file to be used for loading and29 booting the wkup_m3 remote processor.30 31Example:32--------33/* AM33xx */34ocp {35 l4_wkup: l4_wkup@44c00000 {36 compatible = "am335-l4-wkup", "simple-bus";37 ranges = <0 0x44c00000 0x400000>;38 #address-cells = <1>;39 #size-cells = <1>;40 41 wkup_m3: wkup_m3@100000 {42 compatible = "ti,am3352-wkup-m3";43 reg = <0x100000 0x4000>,44 <0x180000 0x2000>;45 reg-names = "umem", "dmem";46 ti,hwmods = "wkup_m3";47 ti,pm-firmware = "am335x-pm-firmware.elf";48 };49 };50 51 ...52};53