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mmc: sdhci-msm: Boost controller core clock

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Ensure SDCC is working with maximum clock otherwise card
detection could be extremely slow, up to 7 seconds.

Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Reviewed-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ivan T. Ivanov 2015-07-06 14:53:38 +03:00 committed by Ulf Hansson
parent 829b6962f7
commit 951b8c875a
1 changed files with 5 additions and 0 deletions
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5
drivers/mmc/host/sdhci-msm.c
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@ -489,6 +489,11 @@ static int sdhci_msm_probe(struct platform_device *pdev)
goto pclk_disable;
}
/* Vote for maximum clock rate for maximum performance */
ret = clk_set_rate(msm_host->clk, INT_MAX);
if (ret)
dev_warn(&pdev->dev, "core clock boost failed\n");
ret = clk_prepare_enable(msm_host->clk);
if (ret)
goto pclk_disable;