From: Adrian Hunter <adrian.hunter@intel.com>
To: Sowjanya Komatineni <skomatineni@nvidia.com>,
ulf.hansson@linaro.org, baolin.wang@linaro.org,
kstewart@linuxfoundation.org, tglx@linutronix.de,
bradleybolen@gmail.com, gregkh@linuxfoundation.org,
thierry.reding@gmail.com, jonathanh@nvidia.com
Cc: anrao@nvidia.com, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org
Subject: Re: [PATCH v1 3/3] mmc: tegra: Enable host capability MMC_CAP2_LONG_WAIT_HW_BUSY
Date: Tue, 17 Mar 2020 11:51:49 +0200 [thread overview]
Message-ID: <c46fef86-ac9c-a921-1464-dbca58bc3169@intel.com> (raw)
In-Reply-To: <1583799205-8442-3-git-send-email-skomatineni@nvidia.com>
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",
>
prev parent reply other threads:[~2020-03-17 9:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-10 0:13 [PATCH v1 1/3] mmc: core: Add capability for hosts supporting long HW busy wait Sowjanya Komatineni
2020-03-10 0:13 ` [PATCH v1 2/3] mmc: tegra: Implement HW busy wait timeout based on command busy time Sowjanya Komatineni
2020-03-17 9:51 ` Adrian Hunter
2020-03-10 0:13 ` [PATCH v1 3/3] mmc: tegra: Enable host capability MMC_CAP2_LONG_WAIT_HW_BUSY Sowjanya Komatineni
2020-03-17 9:51 ` Adrian Hunter [this message]
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