diff options
Diffstat (limited to 'drivers/mtd/nand')
| -rw-r--r-- | drivers/mtd/nand/raw/nand_timings.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/drivers/mtd/nand/raw/nand_timings.c b/drivers/mtd/nand/raw/nand_timings.c index 54c7a1a8b038..efff3583c549 100644 --- a/drivers/mtd/nand/raw/nand_timings.c +++ b/drivers/mtd/nand/raw/nand_timings.c @@ -12,6 +12,13 @@ #define ONFI_DYN_TIMING_MAX U16_MAX +/* + * For non-ONFI chips we use the highest possible value for tPROG and tBERS. + * tR and tCCS will take the default values precised in the ONFI specification + * for timing mode 0, respectively 200us and 500ns. + * + * These four values are tweaked to be more accurate in the case of ONFI chips. + */ static const struct nand_data_interface onfi_sdr_timings[] = { /* Mode 0 */ { @@ -20,6 +27,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 20000, .tALS_min = 50000, @@ -63,6 +72,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 10000, .tALS_min = 25000, @@ -106,6 +117,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 10000, .tALS_min = 15000, @@ -149,6 +162,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -192,6 +207,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -235,6 +252,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -357,18 +376,6 @@ int onfi_fill_data_interface(struct nand_chip *chip, /* nanoseconds -> picoseconds */ timings->tCCS_min = 1000UL * onfi->tCCS; - } else { - struct nand_sdr_timings *timings = &iface->timings.sdr; - /* - * For non-ONFI chips we use the highest possible value for - * tPROG and tBERS. tR and tCCS will take the default values - * precised in the ONFI specification for timing mode 0, - * respectively 200us and 500ns. - */ - - /* microseconds -> picoseconds */ - timings->tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX; - timings->tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX; } return 0; |