On 25/04/18 15:09, Kishon Vijay Abraham I wrote: > Errata i834 in AM572x Sitara Processors Silicon Revision 2.0, 1.1 > (SPRZ429L July 2014–Revised April 2018 [1]) mentions the maximum > obtainable timeout through MMC host controller is 700ms. And for > commands taking longer than 700ms, hardware timeout should be > disabled and software timeout should be used. > > The workaround for Errata i834 can be achieved by adding > SDHCI_QUIRK2_DISABLE_HW_TIMEOUT quirk in sdhci-omap. > > [1] -> http://www.ti.com/lit/er/sprz429l/sprz429l.pdf > > Signed-off-by: Kishon Vijay Abraham I <[email protected]> > Acked-by: Tony Lindgren <[email protected]>
Acked-by: Adrian Hunter <[email protected]> > --- > drivers/mmc/host/sdhci-omap.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c > index 2d9ea23610d5..b2c54940d032 100644 > --- a/drivers/mmc/host/sdhci-omap.c > +++ b/drivers/mmc/host/sdhci-omap.c > @@ -715,7 +715,8 @@ static const struct sdhci_pltfm_data sdhci_omap_pdata = { > SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC, > .quirks2 = SDHCI_QUIRK2_ACMD23_BROKEN | > SDHCI_QUIRK2_PRESET_VALUE_BROKEN | > - SDHCI_QUIRK2_RSP_136_HAS_CRC, > + SDHCI_QUIRK2_RSP_136_HAS_CRC | > + SDHCI_QUIRK2_DISABLE_HW_TIMEOUT, > .ops = &sdhci_omap_ops, > }; > >
