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mtd: rawnand: prepare the removal of the ONFI parameter page

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The NAND chip parameter page is statically allocated within the
nand_chip structure, which reserves a lot of space. Even not ONFI nor
JEDEC chips have it embedded. Also, only a few parameters are actually
read from the parameter page after the detection.

ONFI-related parameters that will be used outside from the
identification function are stored in a separate onfi_parameters
structure embedded in nand_parameters, this small structure that
already hold generic parameters.

For now, the onfi_parameters structure is allocated statically. However,
after some deep rework in the NAND framework, it will be possible to do
dynamic allocations from the NAND identification phase, and this
strcuture will then be dynamically allocated when needed.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal
2018-03-19 14:47:27 +01:00
committed by Boris Brezillon
parent f4531b2b19
commit a97421c753
5 changed files with 64 additions and 46 deletions
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12
drivers/mtd/nand/raw/nand_timings.c
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@@ -306,17 +306,17 @@ int onfi_fill_data_interface(struct nand_chip *chip,
* tR, tPROG, tCCS, ...
* These information are part of the ONFI parameter page.
*/
if (chip->onfi_version) {
struct nand_onfi_params *params = &chip->onfi_params;
if (chip->parameters.onfi.version) {
struct nand_parameters *params = &chip->parameters;
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);
timings->tPROG_max = 1000000ULL * params->onfi.tPROG;
timings->tBERS_max = 1000000ULL * params->onfi.tBERS;
timings->tR_max = 1000000ULL * params->onfi.tR;
/* nanoseconds -> picoseconds */
timings->tCCS_min = 1000UL * le16_to_cpu(params->t_ccs);
timings->tCCS_min = 1000UL * params->onfi.tCCS;
}
return 0;