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Message-ID: <CAJsYDVK9UB=71Yj2t9Rc658W66Lf=uK6eLn5S+Y8Rj3skz4g+w@mail.gmail.com>
Date: Mon, 4 Apr 2022 00:01:32 +0800
From: Chuanhong Guo <gch981213@...il.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Miquel Raynal <miquel.raynal@...tlin.com>,
Mark Brown <broonie@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Richard Weinberger <richard@....at>,
Vignesh Raghavendra <vigneshr@...com>,
Roger Quadros <rogerq@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Cai Huoqing <cai.huoqing@...ux.dev>,
Florian Fainelli <f.fainelli@...il.com>,
Colin Ian King <colin.king@...el.com>,
Wolfram Sang <wsa+renesas@...g-engineering.com>,
Paul Cercueil <paul@...pouillou.net>,
Pratyush Yadav <p.yadav@...com>, Yu Kuai <yukuai3@...wei.com>,
"open list:SPI SUBSYSTEM" <linux-spi@...r.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-arm-kernel@...ts.infradead.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@...ts.infradead.org>,
open list <linux-kernel@...r.kernel.org>,
"open list:NAND FLASH SUBSYSTEM" <linux-mtd@...ts.infradead.org>
Subject: Re: [PATCH 3/4] dt-bindings: spi: add binding doc for spi-mtk-snfi
Hi!
On Sun, Apr 3, 2022 at 11:49 PM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
> [...]
> >>> +
> >>> + ecc-engine:
> >>
> >> The nand-chip.yaml defines a nand-ecc-engine, so how about using that
> >> one? I know mtk-nand.txt uses ecc-engine, but for new schema better to
> >> use properties from existing YAML.
> >
> > The ecc-engine code is shared between mtk_nand.c and this driver, and
> > the property name is defined in the shared part. I left it as-is so that
> > existing dt for mtk_nand doesn't break.
>
> This can be easily fixed with:
> np = of_parse_phandle(of_node, "nand-ecc-engine", 0);
> if (!np) {
> /* Backwards compatible */
> np = of_parse_phandle(of_node, "ecc-engine", 0);
> }
>
> I would like to avoid having one property in generic NAND schema and
> keep adding something slightly different everywhere else.
OK. I'll add a commit for this in the next version.
--
Regards,
Chuanhong Guo
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