Hi Heikki , Thanks for the prompt reply. If i understood correctly the current driver(drivers/usb/misc/ucsi.c) supports the OPM and rest all is taken care by EC FW with BIOS . In ucsi.c file i did not find any mailbox related code. Am I missing something here? Thanks Nehal On 3/6/2017 8:01 PM, Heikki Krogerus wrote: > Hi, > > On Mon, Mar 06, 2017 at 02:41:17PM +0530, Shah, Nehal-bakulchandra wrote: >> Hi Greg and Heikki, >> >> >> I can see that ucsi acpi interface driver is available in kernel tree. I have >> following queries on the same. Kindly pardon my ignorance as i am a novice to >> this. >> >> - Is there any implementation of USB-C system policy manager (OPM) in Linux? > > I think the question here is do we have an implementation for OPM (OS > Policy Manager) which would be in practice the driver we have for UCSI > in Linux kernel. > > System policy manager is implemented in BIOS and/or EC FW with UCSI (check > Figure 2-1 in bios-implementation-of-ucsi.pdf). > >> - If yes to USB-C system policy, are there any requirements that differ from >> the published Intel White paper on UCSI support through ACPI Mailbox method? >> (Link: >> http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/bios-implementation-of-ucsi.pdf >> ) > > No other requirements. > > > Br, > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
