The PXA family of controllers (PXA168/PXA910/MMP2) support CMD14/CMD19 transactions that are used to test the MMC/eMMC bus width for 1, 4, or 8 bits.
Indicate to the mmc layer that it is safe to do bus width testing. Signed-off-by: Philip Rakity <[email protected]> --- drivers/mmc/host/sdhci-pxa.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/mmc/host/sdhci-pxa.c b/drivers/mmc/host/sdhci-pxa.c index c42d326..c8abf0f 100644 --- a/drivers/mmc/host/sdhci-pxa.c +++ b/drivers/mmc/host/sdhci-pxa.c @@ -124,6 +124,9 @@ static int __devinit sdhci_pxa_probe(struct platform_device *pdev) if (pdata->quirks) host->quirks |= pdata->quirks; + /* enable mmc bus width testing */ + host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST; + /* If slot design supports 8 bit data, indicate this to MMC. */ if (pdata->flags & PXA_FLAG_SD_8_BIT_CAPABLE_SLOT) host->mmc->caps |= MMC_CAP_8_BIT_DATA; -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
