AT91_DDRSDRC_MDR
saved_mdr0 = at91_ramc_read(0, AT91_DDRSDRC_MDR);
at91_ramc_write(0, AT91_DDRSDRC_MDR, mdr);
saved_mdr1 = at91_ramc_read(1, AT91_DDRSDRC_MDR);
at91_ramc_write(1, AT91_DDRSDRC_MDR, mdr);
at91_ramc_write(0, AT91_DDRSDRC_MDR, saved_mdr0);
at91_ramc_write(0, AT91_DDRSDRC_MDR, saved_mdr1);
ddr_type = readl(at91_shdwc.mpddrc_base + AT91_DDRSDRC_MDR) &
.type_offset = AT91_DDRSDRC_MDR,
.type_offset = AT91_DDRSDRC_MDR,