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From: Michael Walle <mwalle@kernel.org>
To: Pratyush Yadav <pratyush@kernel.org>,
	Michael Walle <mwalle@kernel.org>,
	Takahiro Kuwano <takahiro.kuwano@infineon.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Tudor Ambarus <tudor.ambarus@linaro.org>
Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH 0/3] mtd: spi-nor: Rework flash parameter initialization
Date: Mon,  1 Jun 2026 14:52:42 +0200	[thread overview]
Message-ID: <20260601125438.3481722-1-mwalle@kernel.org> (raw)

Try to simplify the flash initialization and get rid of the legacy
handling. As default, all the flags of the in-kernel database are
taken and amended with the SFDP data.

This might have the consequence that all the flashes now get a
RDSFPD opcode which might be an unknown opcode. But that was already
the case for any flashes which were unknown to the linux kernel. So
far, there was not a single complaint.

See patch 3 for more information. If feedback is positive, this is
intended to be applied to the spi-nor tree after the next merge
window, so it will sit around in -next for quite some time and get
some testing.

That being said, I've just did a quick test on my boards. Please
give it a test on your boards.

Michael Walle (3):
  mtd: spi-nor: spansion: s25fl256s0: remove SKIP_SFDP flag
  mtd: spi-nor: don't clear the SNOR_F_4B_OPCODES flag on failure
  mtd: spi-nor: rework flash parameter initialization

 drivers/mtd/spi-nor/core.c     | 67 +++++++++++-----------------------
 drivers/mtd/spi-nor/core.h     |  1 -
 drivers/mtd/spi-nor/spansion.c |  2 +-
 3 files changed, 23 insertions(+), 47 deletions(-)

-- 
2.47.3


             reply	other threads:[~2026-06-01 12:54 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-01 12:52 Michael Walle [this message]
2026-06-01 12:52 ` [RFC PATCH 1/3] mtd: spi-nor: spansion: s25fl256s0: remove SKIP_SFDP flag Michael Walle
2026-06-02  9:57   ` Miquel Raynal
2026-06-02 11:01     ` Michael Walle
2026-06-05  8:05   ` Takahiro.Kuwano
2026-06-05 13:05   ` Tudor Ambarus
2026-06-01 12:52 ` [RFC PATCH 2/3] mtd: spi-nor: don't clear the SNOR_F_4B_OPCODES flag on failure Michael Walle
2026-06-02  9:58   ` Miquel Raynal
2026-06-05  8:15   ` Takahiro.Kuwano
2026-06-05 13:05   ` Tudor Ambarus
2026-06-01 12:52 ` [RFC PATCH 3/3] mtd: spi-nor: rework flash parameter initialization Michael Walle
2026-06-05 13:17   ` Tudor Ambarus
2026-06-02 10:03 ` [RFC PATCH 0/3] mtd: spi-nor: Rework " Miquel Raynal
2026-06-03  0:13   ` Takahiro.Kuwano
2026-06-05  8:50     ` Takahiro.Kuwano
2026-07-02  2:39 ` Cheng Ming Lin
2026-07-02 15:17 ` Miquel Raynal
2026-07-07  6:35   ` Michael Walle
2026-07-06  6:24 ` Miquel Raynal
2026-07-06  7:33   ` Michael Walle
2026-07-06 13:45     ` Miquel Raynal
2026-07-06 14:16       ` Miquel Raynal

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