On Thu, Aug 16, 2018 at 09:21:16AM +0200, Sascha Hauer wrote: > When booting from USB it's sometimes observed that the USB stack on > the remote host gets confused. This happens when we adjust the PLLs > the USB controller is hanging on. The ROM just leaves the USB controller > enabled when it passes control to the bootloader, so make sure we > disable it before doing any critical clock operations. > > This is currently done for i.MX51, i.MX53 and i.MX6, but a similar thing > can happen on other i.MXes aswell. > > Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> I won't apply this one. With this patch we can't make sure that the clocks for the USB controller are enabled. When they are not, the bus accesses can hang the system. Checking if the clocks are turned on is SoC specific, so this needs a bit more work. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
