On Mon, 2017-10-09 at 16:58 +0200, Matthias Brugger wrote:
>
> On 10/09/2017 01:35 PM, Chaotian Jing wrote:
> > the origin design of hs400_tune_response is for mt8173 because of
> > mt8173 has a special design. for doing that, we add a new member
> > "compatible", by now it's only for mt8173.
> >
> > Signed-off-by: Chaotian Jing <chaotian.jing@xxxxxxxxxxxx>
> > ---
> > drivers/mmc/host/mtk-sd.c | 8 ++++++--
> > 1 file changed, 6 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
> > index 643c795..e8f8ad9 100644
> > --- a/drivers/mmc/host/mtk-sd.c
> > +++ b/drivers/mmc/host/mtk-sd.c
> > @@ -317,6 +317,7 @@ struct msdc_delay_phase {
> > struct msdc_host {
> > struct device *dev;
> > const struct mtk_mmc_compatible *dev_comp;
> > + const char *compatible;
> > struct mmc_host *mmc; /* mmc structure */
> > int cmd_rsp;
> >
> > @@ -666,7 +667,8 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz)
> > host->base + PAD_CMD_TUNE);
> > }
> >
> > - if (timing == MMC_TIMING_MMC_HS400)
> > + if (timing == MMC_TIMING_MMC_HS400 &&
> > + !strcmp(host->compatible, "mediatek,mt8173-mmc"))
>
> You can add another value to mtk_mmc_compatible as you did in all the following
> patches.
Ok, will do that at next version.
>
> Regards,
> Matthias
>
> > sdr_set_field(host->base + PAD_CMD_TUNE,
> > MSDC_PAD_TUNE_CMDRRDLY,
> > host->hs400_cmd_int_delay);
> > @@ -1594,7 +1596,8 @@ static int msdc_execute_tuning(struct mmc_host *mmc, u32 opcode)
> > struct msdc_host *host = mmc_priv(mmc);
> > int ret;
> >
> > - if (host->hs400_mode)
> > + if (host->hs400_mode &&
> > + !strcmp(host->compatible, "mediatek,mt8173-mmc"))
> > ret = hs400_tune_response(mmc, opcode);
> > else
> > ret = msdc_tune_response(mmc, opcode);
> > @@ -1745,6 +1748,7 @@ static int msdc_drv_probe(struct platform_device *pdev)
> >
> > host->dev = &pdev->dev;
> > host->dev_comp = of_id->data;
> > + host->compatible = of_id->compatible;
> > host->mmc = mmc;
> > host->src_clk_freq = clk_get_rate(host->src_clk);
> > /* Set host parameters to mmc */
> >
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