From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Ivan T. Ivanov" Subject: [PATCH v2] mmc: sdhci-msm: Boost controller core clock Date: Mon, 6 Jul 2015 14:53:38 +0300 Message-ID: <1436183618-15330-1-git-send-email-ivan.ivanov@linaro.org> Return-path: Sender: linux-arm-msm-owner@vger.kernel.org To: Ulf Hansson Cc: Georgi Djakov , Stephen Boyd , Peter Griffin , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org List-Id: linux-mmc@vger.kernel.org Ensure SDCC is working with maximum clock otherwise card detection could be extremely slow, up to 7 seconds. Signed-off-by: Ivan T. Ivanov Reviewed-by: Georgi Djakov Acked-by: Stephen Boyd --- 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