diff options
Diffstat (limited to 'drivers/mtd/nand/denali.c')
| -rw-r--r-- | drivers/mtd/nand/denali.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index 018d14f..5894fcc 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -431,7 +431,16 @@ static void find_valid_banks(struct denali_nand_info *denali) static void detect_max_banks(struct denali_nand_info *denali) { uint32_t features = readl(denali->flash_reg + FEATURES); - denali->max_banks = 2 << (features & FEATURES__N_BANKS); + /* + * Read the revision register, so we can calculate the max_banks + * properly: the encoding changed from rev 5.0 to 5.1 + */ + u32 revision = MAKE_COMPARABLE_REVISION( + readl(denali->flash_reg + REVISION)); + if (revision < REVISION_5_1) + denali->max_banks = 2 << (features & FEATURES__N_BANKS); + else + denali->max_banks = 1 << (features & FEATURES__N_BANKS); } static void detect_partition_feature(struct denali_nand_info *denali) |