From: Georgi Djakov <georgi.djakov@linaro.org>
To: "Ivan T. Ivanov" <ivan.ivanov@linaro.org>,
Ulf Hansson <ulf.hansson@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>,
Peter Griffin <peter.griffin@linaro.org>,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH] mmc: sdhci: msm: Boost controller core clock
Date: Fri, 26 Jun 2015 14:34:55 +0300 [thread overview]
Message-ID: <558D38DF.1080201@linaro.org> (raw)
In-Reply-To: <1435317417-369-1-git-send-email-ivan.ivanov@linaro.org>
On 06/26/2015 02:16 PM, Ivan T. Ivanov 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@linaro.org>
> ---
> 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..b2556bc 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 falied\n");
failed?
Otherwise looks good to me.
> +
> ret = clk_prepare_enable(msm_host->clk);
> if (ret)
> goto pclk_disable;
> --
> 1.9.1
>
next prev parent reply other threads:[~2015-06-26 11:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-26 11:16 [PATCH] mmc: sdhci: msm: Boost controller core clock Ivan T. Ivanov
2015-06-26 11:34 ` Georgi Djakov [this message]
2015-06-26 11:59 ` Ivan T. Ivanov
2015-07-02 0:18 ` Stephen Boyd
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