Messages in this thread | | | Date | Mon, 02 Dec 2013 13:01:51 +0100 | From | Sebastian Andrzej Siewior <> | Subject | Re: [PATCH 1/1] mfd: omap-usb-host: Fix USB device detection problems on OMAP4 Panda |
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- stable@vger.kernel.org since they probably don't care about this unless the patch is merged.
On 12/02/2013 10:41 AM, Roger Quadros wrote: > Michael, > > On 11/29/2013 05:32 PM, Michael Trimarchi wrote: >> Hi Roger >> >> On Fri, Nov 29, 2013 at 2:01 PM, Roger Quadros <rogerq@ti.com> wrote: >>> With u-boot 2013.10, USB devices are sometimes not detected >>> on OMAP4 Panda. To make us independent of what bootloader does >>> with the USB Host module, we must RESET it to get it to a known >>> good state. This patch Soft RESETs the USB Host module. >>> >> >> Do you think that we need something similar of usb musb? >> I have seen the OTG_SYSCONFIG is touched in uboot and >> only readed in omap2430.c. > > I'm not sure about musb. Maybe Sebastian/Felipe have better idea. > In general I believe that all modules must be reset by the kernel. >
based on the code at the bottom it touches the first few register(s) sysconfig. Isn't hwmod actually doing this idle stuff and resting the device during boot?
> cheers, > -roger >>
Sebastian
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