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Message-Id: <1436183618-15330-1-git-send-email-ivan.ivanov@linaro.org> Date: Mon, 6 Jul 2015 14:53:38 +0300 From: "Ivan T. Ivanov" <ivan.ivanov@...aro.org> To: Ulf Hansson <ulf.hansson@...aro.org> Cc: Georgi Djakov <georgi.djakov@...aro.org>, Stephen Boyd <sboyd@...eaurora.org>, Peter Griffin <peter.griffin@...aro.org>, linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org Subject: [PATCH v2] mmc: sdhci-msm: Boost controller core clock 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@...aro.org> Reviewed-by: Georgi Djakov <georgi.djakov@...aro.org> Acked-by: Stephen Boyd <sboyd@...eaurora.org> --- Changes since v0: - s/falied/failed in warning message. drivers/mmc/host/sdhci-msm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index 4a09f76..4bcee03 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -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; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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