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From: Sarthak Garg <sartgarg@codeaurora.org>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org
Cc: vbadigan@codeaurora.org, stummala@codeaurora.org,
	linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-msm@vger.kernel.org,
	Sarthak Garg <sartgarg@codeaurora.org>,
	Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>
Subject: [PATCH V2 2/2] mmc: sdhci-msm: Use maximum possible data timeout value
Date: Thu, 29 Jul 2021 10:16:41 +0530	[thread overview]
Message-ID: <1627534001-17256-3-git-send-email-sartgarg@codeaurora.org> (raw)
In-Reply-To: <1627534001-17256-1-git-send-email-sartgarg@codeaurora.org>

From: Sahitya Tummala <stummala@codeaurora.org>

The Qcom SD controller defines the usage of 0xF in data
timeout counter register (0x2E) which is actually a reserved
bit as per specification. This would result in maximum of 21.26 secs
timeout value.

Some SDcard taking more time than 2.67secs (timeout value corresponding
to 0xE) and with that observed data timeout errors.
So increasing the timeout value to max possible timeout.

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Sarthak Garg <sartgarg@codeaurora.org>
---
 drivers/mmc/host/sdhci-msm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index e44b7a6..19e4673 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -2696,6 +2696,9 @@ static int sdhci_msm_probe(struct platform_device *pdev)
 
 	msm_host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_NEED_RSP_BUSY;
 
+	/* Set the timeout value to max possible */
+	host->max_timeout_count = 0xF;
+
 	pm_runtime_get_noresume(&pdev->dev);
 	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
-- 
2.7.4


      parent reply	other threads:[~2021-07-29  4:47 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-16 14:03 [PATCH V1 0/2] Introduce max_timeout_count in sdhci_host for vendor needs Sarthak Garg
2021-07-16 14:03 ` [PATCH V1 1/2] mmc: sdhci: Introduce max_timeout_count variable in sdhci_host Sarthak Garg
2021-07-16 14:03 ` [PATCH V1 2/2] mmc: sdhci-msm: Use maximum possible data timeout value Sarthak Garg
2021-07-16 23:54   ` Bjorn Andersson
2021-07-29  4:46   ` [PATCH V2 0/2] Introduce max_timeout_count in sdhci_host for vendor Sarthak Garg
2021-07-29  4:46     ` [PATCH V2 1/2] mmc: sdhci: Introduce max_timeout_count variable in sdhci_host Sarthak Garg
2021-08-03  8:23       ` Adrian Hunter
2021-08-06  6:51       ` [PATCH V3 0/2] Introduce max_timeout_count in sdhci_host for vendor Sarthak Garg
2021-08-06  6:54       ` [PATCH V3 0/2] Introduce max_timeout_count in sdhci_host for vendor needs Sarthak Garg
2021-08-06  6:54         ` [PATCH V3 1/2] mmc: sdhci: Introduce max_timeout_count variable in sdhci_host Sarthak Garg
2021-08-06 14:30           ` Adrian Hunter
2021-08-06  6:55         ` [PATCH V3 2/2] mmc: sdhci-msm: Use maximum possible data timeout value Sarthak Garg
2021-08-06 14:31           ` Adrian Hunter
2021-08-16 13:59         ` [PATCH V3 0/2] Introduce max_timeout_count in sdhci_host for vendor needs Ulf Hansson
2021-07-29  4:46     ` Sarthak Garg [this message]

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