lkml.org 
[lkml]   [2016]   [Apr]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] qcom: sdhci-msm: enable the DLL clock
From
+ Adrian

On 5 April 2016 at 09:46, Sreedhar Sambangi <ssambang@codeaurora.org> wrote:
> The DLL clock has to be enabled until the correct
> clock frequency is delivered to DLL
> '1'(default) - DLL clock is disabled
> '0' - dll clock has legacly clock enable.
>
> Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
> Signed-off-by: Sreedhar Sambangi <ssambang@codeaurora.org>

Adrian Hunter is the maintainer for sdhci, next time make sure to post to him.

As this seems like fairly trivial change I decided to pick it up
anyway. So applied for next!

Note, that I changed the prefix of the commit message header to "mmc".

Thanks and kind regards
Uffe

> ---
> drivers/mmc/host/sdhci-msm.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> index 4695bee..95b8b70 100644
> --- a/drivers/mmc/host/sdhci-msm.c
> +++ b/drivers/mmc/host/sdhci-msm.c
> @@ -43,6 +43,9 @@
> #define CORE_DLL_CONFIG 0x100
> #define CORE_DLL_STATUS 0x108
>
> +#define CORE_DLL_CONFIG2 0x1b4
> +#define CORE_DLL_CLK_DISABLE BIT(21)
> +
> #define CORE_VENDOR_SPEC 0x10c
> #define CORE_CLK_PWRSAVE BIT(1)
>
> @@ -326,6 +329,10 @@ static int msm_init_cm_dll(struct sdhci_host *host)
> writel_relaxed((readl_relaxed(host->ioaddr + CORE_DLL_CONFIG)
> | CORE_CK_OUT_EN), host->ioaddr + CORE_DLL_CONFIG);
>
> + /* Write 0 to DLL_CLOCK_DISABLE bit of DLL_CONFIG_2 register */
> + writel_relaxed((readl_relaxed(host->ioaddr + CORE_DLL_CONFIG2)
> + & ~CORE_DLL_CLK_DISABLE), host->ioaddr + CORE_DLL_CONFIG2);
> +
> /* Wait until DLL_LOCK bit of DLL_STATUS register becomes '1' */
> while (!(readl_relaxed(host->ioaddr + CORE_DLL_STATUS) &
> CORE_DLL_LOCK)) {
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html

\
 
 \ /
  Last update: 2016-04-11 16:02    [W:0.087 / U:0.380 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site