linux-kernel - Re: [PATCH v6 3/3] mtd: rawnand: meson: read/write access for boot ROM pages

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Date: Mon, 27 May 2024 14:18:57 +0200
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Arseniy Krasnov <avkrasnov@...utedevices.com>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Kevin Hilman <khilman@...libre.com>,
	Jerome Brunet <jbrunet@...libre.com>,
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: linux-mtd@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-amlogic@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	oxffffaa@...il.com,
	kernel@...rdevices.ru
Subject: Re: [PATCH v6 3/3] mtd: rawnand: meson: read/write access for boot ROM pages

On Tue, 2024-05-07 at 23:09:03 UTC, Arseniy Krasnov wrote:
> Boot ROM on Meson needs some pages to be read/written in a special mode:
> 384 byte ECC mode (so called "short" by Amlogic) and with scrambling
> enabled. Such pages are located on the chip in the following way (for
> example):
> 
> [ p0 ][ p1 ][ p2 ][ p3 ][ p4 ][ p5 ][ p6 ][ p7 ] ... [ pN ]
>   ^           ^           ^           ^
> 
> pX is page number "X". "^" means "special" page used by boot ROM - e.g.
> every 2nd page in the range of [0, 7]. Step (2 here) and last page in
> range is read from the device tree.
> 
> Signed-off-by: Arseniy Krasnov <avkrasnov@...utedevices.com>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.

Miquel