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Message-ID: <CAPDyKFoU9a6Ta_c8Q=cnOhWdsaYok1mrNZJgz1Jx+BD_HYbpwg@mail.gmail.com>
Date: Mon, 20 Jul 2015 16:21:52 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: "Ivan T. Ivanov" <ivan.ivanov@...aro.org>
Cc: Georgi Djakov <georgi.djakov@...aro.org>,
Stephen Boyd <sboyd@...eaurora.org>,
Peter Griffin <peter.griffin@...aro.org>,
linux-mmc <linux-mmc@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH v2] mmc: sdhci-msm: Boost controller core clock
On 6 July 2015 at 13:53, Ivan T. Ivanov <ivan.ivanov@...aro.org> wrote:
> 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>
Thanks, applied!
Kind regards
Uffe
> ---
>
> 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
>
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