AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

mtd: nand: Fix timing setup for NANDs that do not support SET FEATURES

Browse Source 
Some ONFI NANDs do not support the SET/GET FEATURES commands, which,
according to the spec, is perfectly valid.

On these NANDs we can't set a specific timing mode using the "timing
mode" feature, and we should assume the NAND does not require any setup
to enter a specific timing mode.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: d8e725dd83 ("mtd: nand: automate NAND timings selection")
Reported-by: Alexander Dahl <ada@thorsis.com>
Cc: <stable@vger.kernel.org>
Tested-by: Alexander Dahl <ada@thorsis.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This commit is contained in:
Boris Brezillon 2017-07-31 10:29:56 +02:00
parent cb25fae182
commit a11bf5ed95
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/mtd/nand/nand_base.c
View File

@ -1131,7 +1131,9 @@ static int nand_setup_data_interface(struct nand_chip *chip, int chipnr)
* Ensure the timing mode has been changed on the chip side
* before changing timings on the controller side.
*/
if (chip->onfi_version) {
if (chip->onfi_version &&
(le16_to_cpu(chip->onfi_params.opt_cmd) &
ONFI_OPT_CMD_SET_GET_FEATURES)) {
u8 tmode_param[ONFI_SUBFEATURE_PARAM_LEN] = {
chip->onfi_timing_mode_default,
};