RE: [PATCH v4 2/2] mmc: Add mmc driver for Sunplus SP7021

[Tony Huang 黃懷厚]

Dear Krzysztof:
> 
> > +	int dma_int_threshold;
> > +	struct sg_mapping_iter sg_miter; /* for pio mode to access sglist */
> > +	int dma_use_int; /* should raise irq when dma done */
> > +	struct spmmc_tuning_info emmc_tuning_info;
> > +	struct spsdc_tuning_info sd_tuning_info;
> > +	int restore_4bit_sdio_bus;
> > +	const struct spmmc_compatible *dev_comp; };
> > +
> > +struct spsdc_host {
> 
> Where is this used?
> 

struct spmmc_host{} for emmc.			
struct spsdc_host{} for SD card.			
The register base address and offset address of emmc and sd cards are different.			
eMMC and sdcard are their respective hardware settings.