PAD_DS_TUNE
sdr_set_field(host->base + PAD_DS_TUNE,
writel(host->hs400_ds_delay, host->base + PAD_DS_TUNE);
sdr_set_bits(host->base + PAD_DS_TUNE, PAD_DS_TUNE_DLY_SEL);
sdr_clr_bits(host->base + PAD_DS_TUNE, PAD_DS_TUNE_DLY2_SEL);
sdr_set_field(host->base + PAD_DS_TUNE,
sdr_set_field(host->base + PAD_DS_TUNE,
val = readl(host->base + PAD_DS_TUNE);
host->save_para.pad_ds_tune = readl(host->base + PAD_DS_TUNE);
writel(host->save_para.pad_ds_tune, host->base + PAD_DS_TUNE);