emc_channel_readl
value = emc_channel_readl(emc, i, EMC_CFG_DIG_DLL);
value = emc_channel_readl(emc, 0, EMC_CFG_DIG_DLL);
value = emc_channel_readl(emc, i, EMC_MRR);
value = emc_channel_readl(emc, channel, offset);