On Tue, May 10, 2016 at 02:19:40PM +0300, Adrian Hunter wrote:
> 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 <aisheng.dong@xxxxxxx>
>
> I presume this patch should wait for patch 17, but nevertheless:
>
> Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
>
Actually the interesting thing here is patch 18 and 19 do not need
patch 17 since our IC guy told me IMX uSDHC auto-tuning will
not Retuning request for mode 3.
Thanks for the pre-ACK.
Regards
Dong Aisheng
> > ---
> > 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) {
> >
>
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