Messages in this thread | | | Date | Tue, 12 Nov 2013 13:49:09 -0800 | From | David Cohen <> | Subject | Re: [RFC/PATCH 0/2] mmc: sdhci: Workaround Intel Merrifield issue for HS200 |
| |
On 10/29/2013 10:58 AM, David Cohen wrote: > Hi, > > SDHCI used to work well on Intel Merrifield until this patch was applied: > > commit 156e14b126ffb6f040bc6f1aff3c51077e42a744 > Author: Giuseppe CAVALLARO <peppe.cavallaro@st.com> > Date: Wed Jun 12 08:16:38 2013 +0200 > > mmc: sdhci: fix caps2 for HS200 > > Although the HC supports HS200 (eMMC) the caps2 are always zero; this > means there's no way to use the super speed mode (when init the card). > > If the HC support SDR104, for SD3.0, so it also supports HS200 for eMMC > and this patch just sets the MMC_CAP2_HS200 in the host caps2 field. > > Looks like there is a hw issue with unknown root cause so far. > > Is it acceptable to have the quirk I'm proposing to workaround the issue?
Ping. Any comments here?
Br, David Cohen
| |