From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Samuel Holland <samuel@sholland.org>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>
Cc: Boris Brezillon <bbrezillon@kernel.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Chen-Yu Tsai <wens@csie.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
linux-sunxi@lists.linux.dev
Subject: Re: [PATCH v2 1/3] mtd: rawnand: sunxi: Update OOB layout to match hardware
Date: Mon, 6 Feb 2023 12:55:26 +0100 [thread overview]
Message-ID: <20230206115526.560886-1-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20230204143520.9682-2-samuel@sholland.org>
On Sat, 2023-02-04 at 14:35:18 UTC, Samuel Holland wrote:
> When using the hardware ECC engine, the OOB data is made available in
> the NFC_REG_USER_DATA registers, as one 32-bit word per ECC step. Any
> additional bytes are only accessible through raw reads and software
> descrambling. For efficiency, and to match the vendor driver, ignore
> these extra bytes when using hardware ECC.
>
> Note that until commit 34569d869532 ("mtd: rawnand: sunxi: Fix the size
> of the last OOB region"), this extra free area was reported with length
> zero, so this is not a functional change for any stable kernel user.
>
> Signed-off-by: Samuel Holland <samuel@sholland.org>
Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.
Miquel
WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Samuel Holland <samuel@sholland.org>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>
Cc: Boris Brezillon <bbrezillon@kernel.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Chen-Yu Tsai <wens@csie.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
linux-sunxi@lists.linux.dev
Subject: Re: [PATCH v2 1/3] mtd: rawnand: sunxi: Update OOB layout to match hardware
Date: Mon, 6 Feb 2023 12:55:26 +0100 [thread overview]
Message-ID: <20230206115526.560886-1-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20230204143520.9682-2-samuel@sholland.org>
On Sat, 2023-02-04 at 14:35:18 UTC, Samuel Holland wrote:
> When using the hardware ECC engine, the OOB data is made available in
> the NFC_REG_USER_DATA registers, as one 32-bit word per ECC step. Any
> additional bytes are only accessible through raw reads and software
> descrambling. For efficiency, and to match the vendor driver, ignore
> these extra bytes when using hardware ECC.
>
> Note that until commit 34569d869532 ("mtd: rawnand: sunxi: Fix the size
> of the last OOB region"), this extra free area was reported with length
> zero, so this is not a functional change for any stable kernel user.
>
> Signed-off-by: Samuel Holland <samuel@sholland.org>
Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.
Miquel
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Samuel Holland <samuel@sholland.org>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>
Cc: Boris Brezillon <bbrezillon@kernel.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Chen-Yu Tsai <wens@csie.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
linux-sunxi@lists.linux.dev
Subject: Re: [PATCH v2 1/3] mtd: rawnand: sunxi: Update OOB layout to match hardware
Date: Mon, 6 Feb 2023 12:55:26 +0100 [thread overview]
Message-ID: <20230206115526.560886-1-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20230204143520.9682-2-samuel@sholland.org>
On Sat, 2023-02-04 at 14:35:18 UTC, Samuel Holland wrote:
> When using the hardware ECC engine, the OOB data is made available in
> the NFC_REG_USER_DATA registers, as one 32-bit word per ECC step. Any
> additional bytes are only accessible through raw reads and software
> descrambling. For efficiency, and to match the vendor driver, ignore
> these extra bytes when using hardware ECC.
>
> Note that until commit 34569d869532 ("mtd: rawnand: sunxi: Fix the size
> of the last OOB region"), this extra free area was reported with length
> zero, so this is not a functional change for any stable kernel user.
>
> Signed-off-by: Samuel Holland <samuel@sholland.org>
Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.
Miquel
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-02-06 12:02 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-04 14:35 [PATCH v2 0/3] mtd: rawnand: sunxi: Some cleanup Samuel Holland
2023-02-04 14:35 ` Samuel Holland
2023-02-04 14:35 ` Samuel Holland
2023-02-04 14:35 ` [PATCH v2 1/3] mtd: rawnand: sunxi: Update OOB layout to match hardware Samuel Holland
2023-02-04 14:35 ` Samuel Holland
2023-02-04 14:35 ` Samuel Holland
2023-02-06 11:55 ` Miquel Raynal [this message]
2023-02-06 11:55 ` Miquel Raynal
2023-02-06 11:55 ` Miquel Raynal
2023-02-04 14:35 ` [PATCH v2 2/3] mtd: rawnand: sunxi: Embed sunxi_nand_hw_ecc by value Samuel Holland
2023-02-04 14:35 ` Samuel Holland
2023-02-04 14:35 ` Samuel Holland
2023-02-06 11:55 ` Miquel Raynal
2023-02-06 11:55 ` Miquel Raynal
2023-02-06 11:55 ` Miquel Raynal
2023-02-04 14:35 ` [PATCH v2 3/3] mtd: rawnand: sunxi: Precompute the ECC_CTL register value Samuel Holland
2023-02-04 14:35 ` Samuel Holland
2023-02-04 14:35 ` Samuel Holland
2023-02-06 11:55 ` Miquel Raynal
2023-02-06 11:55 ` Miquel Raynal
2023-02-06 11:55 ` Miquel Raynal
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