Re: [PATCH v1 4/4] mtd: spi-nor: macronix: Add 1-4-4 DTR read support for MX66L1G45G

[Michael Walle]

On Thu Oct 22, 2026 at 12:26 PM CEST, Changhuang Liang wrote:
> The MX66L1G45G supports the 1-4-4 DTR read mode. This flash uses 6
> dummy cycles by default in 1-4-4 DTR mode, but the kernel's SFDP
> parser does not derive any SNOR_HWCAPS_READ_1_4_4_DTR capability from
> the BFPT table

So why don't you fix that?

> , and 4BAIT only filters already-known capabilities.
> The exact number of dummy cycles is also not directly given in the
> SFDP tables.

What is BFPT 3rd DWORD bits 4:0 then?

Could you please dump the SFDP for this part? See [1].

-michael

[1] https://docs.kernel.org/6.2/driver-api/mtd/spi-nor.html

Attachment: signature.asc
Description: PGP signature