* Bin Liu <b-liu@xxxxxx> [170120 12:32]: > On Fri, Jan 20, 2017 at 12:01:04PM -0800, Tony Lindgren wrote: > > I noticed in sprz360i.pdf there's "Advisory 1.0.34 USB2PHY: Register > > Accesses After a USB Subsystem Soft Reset May Lock Up the Entire System" > > that seems to affect am335x revisions 1.0, 2.0 and 2.1: > > > > "The synchronization bridge connecting the USB2PHY register interface > > to the L3S interconnect may hang and lock up the entire system. When > > there is a sequence of any USB2PHY register access, followed by a USB > > subsystem soft reset initiated with the SOFT_RESET bit in the SYSCONFIG > > register, followed by any USB2PHY register access, the L3S interconnect > > may hang on the second USB2PHY register access." > > I understand this patch adds runtime PM in the am335x phy driver, but the > message above is irrelevant. This advisory is meant for the PHY > registers, not the phy-ctrl registers in the USBSS wrapper. Currently we > don't touch any PHY register in any driver. OK so we don't currently need this then. If all phy-am335x.c is doing is calling phy_ctrl_power() in another driver then yeah no point with this patch. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
