Subject: [PATCH 18/23] mmc: sdhci-esdhc-imx: enable hw auto retuning for STD_TUNING

From: [email-masked] (Adrian Hunter)
Date: Tue, 10 May 2016 14:19:40 +0300

On 15/04/16 20:29, Dong Aisheng wrote:
> Enable HW auto retuning when set SDHCI_CTRL_EXEC_TUNING and clear it
> when clear SDHCI_CTRL_TUNED_CLK.
> 
> Signed-off-by: Dong Aisheng <[email-masked]>

I presume this patch should wait for patch 17, but nevertheless:

Acked-by: Adrian Hunter <[email-masked]>

> ---
>  drivers/mmc/host/sdhci-esdhc-imx.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
> index 9f9be3f..a582a83 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -44,6 +44,7 @@
>  #define  ESDHC_MIX_CTRL_AC23EN		(1 << 7)
>  #define  ESDHC_MIX_CTRL_EXE_TUNE	(1 << 22)
>  #define  ESDHC_MIX_CTRL_SMPCLK_SEL	(1 << 23)
> +#define  ESDHC_MIX_CTRL_AUTO_TUNE_EN	(1 << 24)
>  #define  ESDHC_MIX_CTRL_FBCLK_SEL	(1 << 25)
>  #define  ESDHC_MIX_CTRL_HS400_EN	(1 << 26)
>  /* Bits 3 and 6 are not SDHCI standard definitions */
> @@ -484,11 +485,13 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
>  			} else {
>  				v &= ~ESDHC_MIX_CTRL_SMPCLK_SEL;
>  				m &= ~ESDHC_MIX_CTRL_FBCLK_SEL;
> +				m &= ~ESDHC_MIX_CTRL_AUTO_TUNE_EN;
>  			}
>  
>  			if (val & SDHCI_CTRL_EXEC_TUNING) {
>  				v |= ESDHC_MIX_CTRL_EXE_TUNE;
>  				m |= ESDHC_MIX_CTRL_FBCLK_SEL;
> +				m |= ESDHC_MIX_CTRL_AUTO_TUNE_EN;
>  				tuning_ctrl = readl(host->ioaddr + ESDHC_TUNING_CTRL);
>  				tuning_ctrl |= ESDHC_STD_TUNING_EN | ESDHC_TUNING_START_TAP_DEFAULT;
>  				if (imx_data->boarddata.tuning_start_tap) {
>