Hi, >-----Original Message----- >From: Hema Kalliguddi [mailto:hemahk@xxxxxx] >Sent: Thursday, April 07, 2011 6:29 PM >To: balbi@xxxxxx; Jarkko Nikula >Cc: OMAP Linux discussion >Subject: RE: What is missing from musb - linux-omap merge? > >>-----Original Message----- >>From: Felipe Balbi [mailto:balbi@xxxxxx] >>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 <hemahk@xxxxxx> 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. Tested with OMAP3630Zoom3 board not with 3430SDP. >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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
