>-----Original Message----- >From: Felipe Balbi [mailto:ba...@ti.com] >Sent: Thursday, April 07, 2011 5:08 PM >To: Jarkko Nikula >Cc: Hema Kalliguddi; OMAP Linux discussion; Felipe Balbi >Subject: Re: What is missing from musb - linux-omap merge? > >On Thu, Apr 07, 2011 at 01:34:52PM +0300, Jarkko Nikula wrote: >> Hi >> >> On Thu, 7 Apr 2011 14:38:06 +0530 >> Hema Kalliguddi <hem...@ti.com> wrote: >> >> > I tried the core retention with v2.6.39-rc1 with >OMAP3630Zoom3 board >> > and don't observe any issues. Core is transitioning to >retention without >> > any issue, >> > with or without musb driver loaded. >> > >> > But on OMAP3430SDP I am observing the crash when try to do >> > echo mem > /sys/power/state. >> > >> > Attached is the fix for this issue and core transitions to >retention. >> > >> Hmm.. suspend/resume are fine on Nokia N900 with and without >the patch. >> Patch also didn't fix the idle retention. >> >> > When you say retention is not working can you please carify what is >> > happening? >> > are you trying in idle path retention or suspend/resume? >> > >> Sorry not being verbose enough, I was testing the idle retention. >> >> For me it looks these differencies are explained by different >> bootloaders. As Kevin told they may leave MUSB in a wrong >state. Was it >> so that before hwmod conversion the musb did IP reset etc >and now this >> feature is missing? So I'm thinking is this problem a regression or >> missing feature after hwmod conversion? > Hwmod will take care of restting the ip if the SYSC_HAS_SOFTRESET sysc_flag is set. And it is being set in the hwmod structure of OMAP3.
I tested both idle path and suspend/resume retention and works fine on OMAP3430SDP. I am wondering what might be the problem with N900. Is it works if you do the ip reset in the musb driver? Regards, Hema >it's possibly a regression. I remember we had softreset before. Should >be fixed. > >-- >balbi > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
