On Sep 12, 2012, at 1:18 AM, Huang Changming-R66093 wrote: > > > Best Regards > Jerry Huang > > >> -----Original Message----- >> From: Chris Ball [mailto:cjb@xxxxxxxxxx] >> Sent: Wednesday, September 12, 2012 4:59 AM >> To: Kumar Gala >> Cc: Huang Changming-R66093; linuxppc-dev@xxxxxxxxxxxxxxxx list; linux- >> mmc@xxxxxxxxxxxxxxx; Anton Vorontsov >> Subject: Re: [PATCH 2/3] powerpc/esdhc: add property to disable the CMD23 >> >> Hi, >> >> On Tue, Sep 11 2012, Kumar Gala wrote: >>> thanks for the info. Do you know what's required on controller side >>> to handle cards that support CMD23? >>> >>> I'm trying to figure out if older controller's on FSL SoCs are missing >>> some feature to allow CMD23 to work (vs Auto-CMD23). >> >> It seems plausible that it's just not implemented on these controllers. >> It's a little strange, since the command's been specified for so long and >> we haven't seen any other controllers with problems. The patch would be >> correct if this is true. >> > > I didn't find any description about it, but after testing on FSL silicones, I got this result: > Some silicones support this command, and some silicones don't support it, which will cause I/O error. Can you list out which SoCs support it and which don't. Having this list will be useful in understanding which controller versions supported it. - k-- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
