On Tue Dec 23, 2025 at 4:01 AM CET, Haibo Chen wrote:
> Find two batches mt35xu512aba has different SFDP but with same
> jedec ID. The batch which use the new version of SFDP contain
> all the necessary information to support OCT DTR mode. The batch
> with old version do not contain the OCT DTR command information,
> but in fact it did support OCT DTR mode.
>
> Current mt35xu512aba_post_sfdp_fixup() add some setting including
> SNOR_CMD_READ_8_8_8_DTR, but still lack SNOR_CMD_PP_8_8_8_DTR. Meet
> issue on the batch mt35xu512aba with old SFDP version. Because no
> SNOR_CMD_PP_8_8_8_DTR, micron_st_nor_octal_dtr_en() will not be
> called, then use SNOR_CMD_READ_8_8_8_DTR will meet issue.
>
> Fixes: 44dd635cd632 ("mtd: spi-nor: micron-st: use SFDP of mt35xu512aba")
> Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
> Signed-off-by: Haibo Chen <haibo.chen@nxp.com>

Reviewed-by: Michael Walle <mwalle@kernel.org>