Commit 867c0778 authored by Boris Brezillon's avatar Boris Brezillon Committed by Greg Kroah-Hartman

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

commit a11bf5ed upstream.

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: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Fixes: d8e725dd ("mtd: nand: automate NAND timings selection")
Reported-by: default avatarAlexander Dahl <ada@thorsis.com>
Tested-by: default avatarAlexander Dahl <ada@thorsis.com>
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a34d48d5
......@@ -1102,7 +1102,9 @@ static int nand_setup_data_interface(struct nand_chip *chip)
* 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,
};
......
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