diff options
| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2017-11-22 02:38:21 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-11-29 00:28:58 +0900 |
| commit | 6f84b26b53afa207092a8906fa08f4c78d65afb6 (patch) | |
| tree | f893f6e765b0bd895f86764fa61450d0e2d45eab /drivers/mtd/nand/nand_timings.c | |
| parent | 3d841b3214565640ada80baa0f73885cddd216be (diff) | |
mtd: nand: Add a few more timings to nand_sdr_timings
Add the tR_max, tBERS_max, tPROG_max and tCCS_min timings to the
nand_sdr_timings struct.
Assign default/safe values for the statically defined timings, and
extract them from the ONFI parameter table if the NAND is ONFI
compliant.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
[Linux commit: 204e7ecd47e26cc12d9e8e8a7e7a2eeb9573f0ba
Fixup commit: 6d29231000bbe0fb9e4893a9c68151ffdd3b5469]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'drivers/mtd/nand/nand_timings.c')
| -rw-r--r-- | drivers/mtd/nand/nand_timings.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c index ba4f22f12d..9935557291 100644 --- a/drivers/mtd/nand/nand_timings.c +++ b/drivers/mtd/nand/nand_timings.c @@ -17,6 +17,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 20000, .tALS_min = 50000, @@ -57,6 +59,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 10000, .tALS_min = 25000, @@ -97,6 +101,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 10000, .tALS_min = 15000, @@ -137,6 +143,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -177,6 +185,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -217,6 +227,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -289,10 +301,22 @@ int onfi_init_data_interface(struct nand_chip *chip, *iface = onfi_sdr_timings[timing_mode]; /* - * TODO: initialize timings that cannot be deduced from timing mode: + * Initialize timings that cannot be deduced from timing mode: * tR, tPROG, tCCS, ... * These information are part of the ONFI parameter page. */ + if (chip->onfi_version) { + struct nand_onfi_params *params = &chip->onfi_params; + struct nand_sdr_timings *timings = &iface->timings.sdr; + + /* microseconds -> picoseconds */ + timings->tPROG_max = 1000000ULL * le16_to_cpu(params->t_prog); + timings->tBERS_max = 1000000ULL * le16_to_cpu(params->t_bers); + timings->tR_max = 1000000ULL * le16_to_cpu(params->t_r); + + /* nanoseconds -> picoseconds */ + timings->tCCS_min = 1000UL * le16_to_cpu(params->t_ccs); + } return 0; } |