diff options
| author | Jerry Huang <Chang-Ming.Huang@freescale.com> | 2012-10-25 13:47:19 +0800 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-11-07 14:55:29 -0500 |
| commit | 63ef5d8c28b2a944f104d854254941e7375c85a3 (patch) | |
| tree | f4102bfc4ab13f0ec07d28a635170373160e522d /drivers/mmc/host/sdhci.c | |
| parent | 00956ea360c3825ac9fd337758e07e193f66d1d9 (diff) | |
mmc: sdhci-of-esdhc: disable CMD23 for some Freescale SoCs
CMD23 causes lots of errors in kernel on some freescale SoCs
(P1020, P1021, P1022, P1024, P1025 and P4080) when MMC card used,
which is because these controllers does not support CMD23,
even on the SoCs which declares CMD23 is supported.
Therefore, we'll not use CMD23.
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 7922adb42386..f05a37747b3d 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2837,6 +2837,9 @@ int sdhci_add_host(struct sdhci_host *host) if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA)) mmc->caps |= MMC_CAP_4_BIT_DATA; + if (host->quirks2 & SDHCI_QUIRK2_HOST_NO_CMD23) + mmc->caps &= ~MMC_CAP_CMD23; + if (caps[0] & SDHCI_CAN_DO_HISPD) mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED; |