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SubjectRe: [PATCH v4 09/12] mmc: sdhci-omap: Workaround for Errata i834
From
Date
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 <kishon@ti.com>
> Acked-by: Tony Lindgren <tony@atomide.com>

Acked-by: Adrian Hunter <adrian.hunter@intel.com>

> ---
> 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,
> };
>
>

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