On Tue, 26 May 2020 21:17:13 +0200 Miquel Raynal <miquel.raynal@xxxxxxxxxxx> wrote: > The ONFI parameter page of a chip might define more fine grained > tPROG_max and tBERS_max. When we do not have this information, we > default to the highest possible values (they are maxima anyway). > > There is no point setting these fields at runtime, so explicitly move > these defaults to the main ONFI SDR timings structure. Okay, now I see why you're doing that: you want to return the mode 0 entry directly, and it makes sense, but it should be explained in the commit message. > > Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx> > --- > drivers/mtd/nand/raw/nand_timings.c | 24 ++++++++++++------------ > 1 file changed, 12 insertions(+), 12 deletions(-) > > diff --git a/drivers/mtd/nand/raw/nand_timings.c b/drivers/mtd/nand/raw/nand_timings.c > index c2286a75d134..52ee83e75646 100644 > --- a/drivers/mtd/nand/raw/nand_timings.c > +++ b/drivers/mtd/nand/raw/nand_timings.c > @@ -20,6 +20,8 @@ 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 +65,8 @@ 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 +110,8 @@ 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 +155,8 @@ 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 +200,8 @@ 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 +245,8 @@ 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, > @@ -359,18 +371,6 @@ 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; ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/