MMR_GCFG
ud->mmrs[MMR_GCFG] = devm_platform_ioremap_resource_byname(pdev, mmr_names[MMR_GCFG]);
if (IS_ERR(ud->mmrs[MMR_GCFG]))
return PTR_ERR(ud->mmrs[MMR_GCFG]);
cap2 = udma_read(ud->mmrs[MMR_GCFG], 0x28);
cap3 = udma_read(ud->mmrs[MMR_GCFG], 0x2c);
cap4 = udma_read(ud->mmrs[MMR_GCFG], 0x30);
cap3 = udma_read(ud->mmrs[MMR_GCFG], 0x2c);
cap = udma_read(ud->mmrs[MMR_GCFG], 0x2c);
cap = udma_read(ud->mmrs[MMR_GCFG], 0x30);
cap3 = udma_read(ud->mmrs[MMR_GCFG], 0x2c);
[MMR_GCFG] = "gcfg",