From: Pratyush Yadav <pratyush@kernel.org>
To: Sanjaikumar V S <sanjaikumarvs@gmail.com>
Cc: mwalle@kernel.org, linux-kernel@vger.kernel.org,
linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com,
pratyush@kernel.org, richard@nod.at,
sanjaikumar.vs@dicortech.com, stable@vger.kernel.org,
tudor.ambarus@linaro.org, vigneshr@ti.com
Subject: Re: [PATCH v4 1/2] mtd: spi-nor: sst: Fix write enable before AAI sequence
Date: Mon, 30 Mar 2026 14:21:15 +0000 [thread overview]
Message-ID: <2vxz5x6d1jqc.fsf@kernel.org> (raw)
In-Reply-To: <20260311103057.29-2-sanjaikumarvs@gmail.com> (Sanjaikumar V. S.'s message of "Wed, 11 Mar 2026 10:30:56 +0000")
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
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
WARNING: multiple messages have this Message-ID (diff)
From: Pratyush Yadav <pratyush@kernel.org>
To: Sanjaikumar V S <sanjaikumarvs@gmail.com>
Cc: mwalle@kernel.org, linux-kernel@vger.kernel.org,
linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com,
pratyush@kernel.org, richard@nod.at,
sanjaikumar.vs@dicortech.com, stable@vger.kernel.org,
tudor.ambarus@linaro.org, vigneshr@ti.com
Subject: Re: [PATCH v4 1/2] mtd: spi-nor: sst: Fix write enable before AAI sequence
Date: Mon, 30 Mar 2026 14:21:15 +0000 [thread overview]
Message-ID: <2vxz5x6d1jqc.fsf@kernel.org> (raw)
In-Reply-To: <20260311103057.29-2-sanjaikumarvs@gmail.com> (Sanjaikumar V. S.'s message of "Wed, 11 Mar 2026 10:30:56 +0000")
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
next prev parent reply other threads:[~2026-03-30 14:21 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-11 10:30 [PATCH v4 0/2] mtd: spi-nor: Fix SST AAI write mode Sanjaikumar V S
2026-03-11 10:30 ` Sanjaikumar V S
2026-03-11 10:30 ` [PATCH v4 1/2] mtd: spi-nor: sst: Fix write enable before AAI sequence Sanjaikumar V S
2026-03-11 10:30 ` Sanjaikumar V S
2026-03-16 13:44 ` Hendrik Donner
2026-03-16 13:44 ` Hendrik Donner
2026-03-30 14:21 ` Pratyush Yadav [this message]
2026-03-30 14:21 ` Pratyush Yadav
2026-03-11 10:30 ` [PATCH v4 2/2] mtd: spi-nor: core: Fix AAI mode when dirmap is not available Sanjaikumar V S
2026-03-11 10:30 ` Sanjaikumar V S
2026-03-16 13:44 ` Hendrik Donner
2026-03-16 13:44 ` Hendrik Donner
2026-03-30 14:23 ` Pratyush Yadav
2026-03-30 14:23 ` Pratyush Yadav
2026-03-31 6:24 ` Sanjaikumar V S
2026-03-31 6:24 ` Sanjaikumar V S
2026-03-30 7:31 ` [PATCH v4 0/2] mtd: spi-nor: Fix SST AAI write mode Sanjaikumar V S
2026-03-30 7:31 ` Sanjaikumar V S
2026-03-30 14:25 ` Pratyush Yadav
2026-03-30 14:25 ` Pratyush Yadav
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