Re: [PATCH v4 1/2] mtd: spi-nor: sst: Fix write enable before AAI sequence

Pratyush Yadav
2026-03-30T14:21:22Z

On Wed, Mar 11 2026, Sanjaikumar V S wrote:

> From: Sanjaikumar V S <sanjaikumar.vs@dicortech.com>
>
> When writing to SST flash starting at an odd address, a single byte is
> first programmed using the byte program (BP) command. After this
> operation completes, the flash hardware automatically clears the Write
> Enable Latch (WEL) bit.
>
> If an AAI (Auto Address Increment) word program sequence follows, it
> requires WEL to be set. Without re-enabling writes, the AAI sequence
> fails.
>
> Add spi_nor_write_enable() after the odd-address byte program when more
> data needs to be written. Use a local boolean for clarity.
>
> Fixes: b199489d37b2 ("mtd: spi-nor: add the framework for SPI NOR")
> Cc: stable@vger.kernel.org
> Signed-off-by: Sanjaikumar V S <sanjaikumar.vs@dicortech.com>

Acked-by: Pratyush Yadav <pratyush@kernel.org>

[...]

--
Regards,
Pratyush Yadav