[PATCH] mtd: spi-nor: core: replace dummy buswidth from addr to data

[Pratyush Yadav]

On Thu, Nov 07 2024, Cheng Ming Lin wrote:

> From: Cheng Ming Lin <chengminglin at mxic.com.tw>
>
> The default dummy cycle for Macronix SPI NOR flash in Octal Output
> Read Mode(1-1-8) is 20.
>
> Currently, the dummy buswidth is set according to the address bus width.
> In the 1-1-8 mode, this means the dummy buswidth is 1. When converting
> dummy cycles to bytes, this results in 20 x 1 / 8 = 2 bytes, causing the
> host to read data 4 cycles too early.
>
> Since the protocol data buswidth is always greater than or equal to the
> address buswidth. Setting the dummy buswidth to match the data buswidth
> increases the likelihood that the dummy cycle-to-byte conversion will be
> divisible, preventing the host from reading data prematurely.

Makes sense.

Reviewed-by: Pratyush Yadav <pratyush at kernel.org>

-- 
Regards,
Pratyush Yadav