From: "Michael Walle" <mwalle@kernel.org>
To: "Cheng Ming Lin" <linchengming884@gmail.com>,
"Pratyush Yadav" <pratyush@kernel.org>,
"Takahiro Kuwano" <takahiro.kuwano@infineon.com>,
"Miquel Raynal" <miquel.raynal@bootlin.com>,
"Richard Weinberger" <richard@nod.at>,
"Vignesh Raghavendra" <vigneshr@ti.com>
Cc: <linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
<alvinzhou@mxic.com.tw>,
"Cheng Ming Lin" <chengminglin@mxic.com.tw>
Subject: Re: [PATCH v3 1/2] mtd: spi-nor: Add support for MX25L12833F and MX25L12845G
Date: Tue, 11 Aug 2026 08:31:18 +0200 [thread overview]
Message-ID: <DKLWJGG9XFFT.26IGJEZPPYFGX@kernel.org> (raw)
In-Reply-To: <20260605084837.1875896-2-linchengming884@gmail.com>
On Fri Jun 5, 2026 at 10:48 AM CEST, Cheng Ming Lin wrote:
> From: Cheng Ming Lin <chengminglin@mxic.com.tw>
>
> Add support for Macronix MX25L12833F and MX25L12845G SPI NOR flashes.
> These parts share the same JEDEC ID (0xc2, 0x20, 0x18) as the legacy
> MX25L12805D.
>
> The newer flashes support SFDP and 1-4-4 Page Program in 3-byte address
> mode, but this 4PP capability is not defined in their SFDP tables.
> Conversely, the legacy MX25L12805D lacks SFDP support entirely and does
> not support 4PP.
>
> To safely enable 4PP for the newer flashes without breaking the legacy
> part, introduce a post_sfdp fixup. Since the legacy MX25L12805D does
> not support SFDP, it falls back to static parameters and will never
> execute the post_sfdp hook. The newer flashes will successfully parse
> the SFDP, trigger the hook, and safely append the SNOR_HWCAPS_PP_1_4_4
> capability.
>
> Signed-off-by: Cheng Ming Lin <chengminglin@mxic.com.tw>
Nice!
Reviewed-by: Michael Walle <mwalle@kernel.org>
next prev parent reply other threads:[~2026-08-11 6:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-05 8:48 [PATCH v3 0/2] mtd: spi-nor: macronix: Add support for MX25L12833F and MX25L12845G Cheng Ming Lin
2026-06-05 8:48 ` [PATCH v3 1/2] mtd: spi-nor: " Cheng Ming Lin
2026-08-11 6:31 ` Michael Walle [this message]
2026-06-05 8:48 ` [PATCH v3 2/2] mtd: spi-nor: macronix: Restore fallback parameters for MX25L12805D Cheng Ming Lin
2026-08-11 6:31 ` Michael Walle
2026-08-11 1:22 ` [PATCH v3 0/2] mtd: spi-nor: macronix: Add support for MX25L12833F and MX25L12845G Cheng Ming Lin
2026-08-11 6:31 ` Michael Walle
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