From: Arseniy Krasnov <avkrasnov@salutedevices.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Neil Armstrong <neil.armstrong@linaro.org>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: <linux-mtd@lists.infradead.org>, <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-amlogic@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <oxffffaa@gmail.com>,
<kernel@sberdevices.ru>,
Arseniy Krasnov <avkrasnov@salutedevices.com>
Subject: [PATCH v6 1/3] dt-bindings: mtd: amlogic,meson-nand: support fields for boot ROM code
Date: Wed, 8 May 2024 02:09:01 +0300 [thread overview]
Message-ID: <20240507230903.3399594-2-avkrasnov@salutedevices.com> (raw)
In-Reply-To: <20240507230903.3399594-1-avkrasnov@salutedevices.com>
Boot ROM code on Meson requires that some pages on NAND must be written
in special mode: "short" ECC mode where each block is 384 bytes and
scrambling mode is on. 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 in example is set by
'amlogic,boot-page-step' field. Last page in range (7 in example) is
set by 'amlogic,boot-pages' field.
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
---
.../bindings/mtd/amlogic,meson-nand.yaml | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
index 57b6957c8415..284f0f882c32 100644
--- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
+++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
@@ -64,11 +64,29 @@ patternProperties:
items:
maximum: 0
+ amlogic,boot-pages:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Number of pages starting from offset 0, where a special ECC
+ configuration must be used because it is accessed by the ROM
+ code. This ECC configuration uses 384 bytes data blocks.
+ Also scrambling mode is enabled for such pages.
+
+ amlogic,boot-page-step:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Interval between pages, accessed by the ROM code. For example
+ we have 8 pages [0, 7]. Pages 0,2,4,6 are accessed by the
+ ROM code, so this field will be 2 (e.g. every 2nd page). Rest
+ of pages - 1,3,5,7 are read/written without this mode.
+
unevaluatedProperties: false
dependencies:
nand-ecc-strength: [nand-ecc-step-size]
nand-ecc-step-size: [nand-ecc-strength]
+ amlogic,boot-pages: [nand-is-boot-medium, "amlogic,boot-page-step"]
+ amlogic,boot-page-step: [nand-is-boot-medium, "amlogic,boot-pages"]
required:
--
2.35.0
_______________________________________________
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:[~2024-05-07 23:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-07 23:09 [PATCH v6 0/3] Meson: R/W support for pages used by boot ROM Arseniy Krasnov
2024-05-07 23:09 ` Arseniy Krasnov [this message]
2024-05-08 14:09 ` [PATCH v6 1/3] dt-bindings: mtd: amlogic,meson-nand: support fields for boot ROM code Rob Herring (Arm)
[not found] ` <CAP_G_RUdN+6OcsQZUkqWQMYoH-ZvmPnskT3yONK_YssqUYhm9Q@mail.gmail.com>
2024-05-12 17:26 ` Arseniy Krasnov
2024-05-13 9:05 ` Krzysztof Kozlowski
2024-05-13 10:10 ` Arseniy Krasnov
2024-05-27 12:19 ` Miquel Raynal
2024-05-07 23:09 ` [PATCH v6 2/3] mtd: rawnand: meson: refactor use of 'meson_nfc_cmd_access()' Arseniy Krasnov
2024-05-27 12:19 ` Miquel Raynal
2024-05-07 23:09 ` [PATCH v6 3/3] mtd: rawnand: meson: read/write access for boot ROM pages Arseniy Krasnov
2024-05-27 12:18 ` Miquel Raynal
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240507230903.3399594-2-avkrasnov@salutedevices.com \
--to=avkrasnov@salutedevices.com \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=jbrunet@baylibre.com \
--cc=kernel@sberdevices.ru \
--cc=khilman@baylibre.com \
--cc=krzysztof.kozlowski+dt@linaro.org \
--cc=linux-amlogic@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=martin.blumenstingl@googlemail.com \
--cc=miquel.raynal@bootlin.com \
--cc=neil.armstrong@linaro.org \
--cc=oxffffaa@gmail.com \
--cc=richard@nod.at \
--cc=robh+dt@kernel.org \
--cc=vigneshr@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).