On 20:13-20221116, Georgi Vlaev wrote: > + /* > + * Attempt to call prepare_sleep, this will be NAK'd if suspend is not > + * supported by firmware in use, in which case we will not attempt to > + * init suspend. > + */ > + ret = ti_sci_cmd_prepare_sleep(&info->handle, 0, > + (u32)(info->ctx_mem_addr & 0xffffffff), > + (u32)((u64)info->ctx_mem_addr >> 32), 0); > + https://software-dl.ti.com/tisci/esd/latest/2_tisci_msgs/pm/lpm.html#tisci-msg-prepare-sleep "Prepare the SOC for entering into a low power mode." But we are in the init process here. From the documentation, firmware does'nt seem to guarantee it would do something unexpected (like setup io daisy chain or something like that which normal LP entry state would have to do) - How is it safe to use it as a discovery of capability API? -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D
