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SubjectRe: [PATCH v1 3/3] mmc: tegra: Enable host capability MMC_CAP2_LONG_WAIT_HW_BUSY
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On 10/03/20 2:13 am, Sowjanya Komatineni wrote:
> Some mmc operations take longer than maximum HW busy detection and
> mmc core driver converts R1B type to R1 type response for these
> operations based on host max busy timeout and command operation time
> and uses SW poll for busy.
>
> Tegra host support long HW busy detection where host waits forever
> till the card is busy.
>
> This patch enables MMC_CAP2_LONG_WAIT_HW_BUSY capability for Tegra
> host.
>
> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>

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

> ---
> drivers/mmc/host/sdhci-tegra.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
> index 40a221d..9d0f371 100644
> --- a/drivers/mmc/host/sdhci-tegra.c
> +++ b/drivers/mmc/host/sdhci-tegra.c
> @@ -1583,6 +1583,7 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
> if (tegra_host->soc_data->nvquirks & NVQUIRK_ENABLE_DDR50)
> host->mmc->caps |= MMC_CAP_1_8V_DDR;
>
> + host->mmc->caps2 |= MMC_CAP2_LONG_WAIT_HW_BUSY;
> tegra_sdhci_parse_dt(host);
>
> tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power",
>

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