From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Paul Cercueil <paul@crapouillou.net>
Cc: David Woodhouse <dwmw2@infradead.org>,
Brian Norris <computersforpeace@gmail.com>,
Boris Brezillon <bbrezillon@kernel.org>,
Marek Vasut <marek.vasut@gmail.com>,
Richard Weinberger <richard@nod.at>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Harvey Hunt <harveyhuntnexus@gmail.com>,
linux-mtd@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 2/9] dt-bindings: mtd: ingenic: Change 'BCH' to 'ECC' in documentation
Date: Wed, 13 Mar 2019 14:12:31 +0100 [thread overview]
Message-ID: <20190313141231.1cc6e072@xps13> (raw)
In-Reply-To: <1552481988.2412.2@crapouillou.net>
Hi Paul,
Paul Cercueil <paul@crapouillou.net> wrote on Wed, 13 Mar 2019 09:59:48
-0300:
> Le lun. 4 mars 2019 à 15:58, Miquel Raynal <miquel.raynal@bootlin.com> a écrit :
> > Hi Paul,
> >
> > Paul Cercueil <paul@crapouillou.net> wrote on Mon, 04 Mar 2019 > 19:23:50
> > +0100:
> >
> >> On Mon, Mar 4, 2019 at 10:50 AM, Miquel Raynal >> <miquel.raynal@bootlin.com> wrote:
> >> > Hi Paul,
> >> >
> >> > Paul Cercueil <paul@crapouillou.net >> <mailto:paul@crapouillou.net>> > wrote on Sat, 9 Feb 2019 16:22:58
> >> > -0300:
> >> >
> >> >> The JZ4740 ECC hardware is not BCH but Reed-Solomon, so it >> makes >> more
> >> >> sense to use the more generic ECC term.
> >> >> >> Signed-off-by: Paul Cercueil <paul@crapouillou.net >> >> <mailto:paul@crapouillou.net>>
> >> >> ---
> >> >> >> Changes:
> >> >> >> v3: New patch
> >> >> >> v4: No change
> >> >> >> .../devicetree/bindings/mtd/ingenic,jz4780-nand.txt | 18 >> >> +++++++++---------
> >> >> 1 file changed, 9 insertions(+), 9 deletions(-)
> >> >> >> diff --git >> >> a/Documentation/devicetree/bindings/mtd/ingenic,jz4780-nand.txt >> >> b/Documentation/devicetree/bindings/mtd/ingenic,jz4780-nand.txt
> >> >> index a5b940f18bf6..5a45cc54f46d 100644
> >> >> --- >> a/Documentation/devicetree/bindings/mtd/ingenic,jz4780-nand.txt
> >> >> +++ >> b/Documentation/devicetree/bindings/mtd/ingenic,jz4780-nand.txt
> >> >> @@ -1,4 +1,4 @@
> >> >> -* Ingenic JZ4780 NAND/BCH
> >> >> +* Ingenic JZ4780 NAND/ECC
> >> >> >> This file documents the device tree bindings for NAND flash >> >> devices on the
> >> >> JZ4780. NAND devices are connected to the NEMC controller >> >> (described in
> >> >> @@ -14,10 +14,10 @@ Required NAND controller device properties:
> >> >> an offset of 0 and a size of 0x1000000 (i.e. the whole NEMC >> >> bank).
> >> >> >> Optional NAND controller device properties:
> >> >> -- ingenic,bch-controller: To make use of the hardware BCH >> >> controller, this
> >> >> - property must contain a phandle for the BCH controller node. >> The >> required
> >> >> +- ingenic,bch-controller: To make use of the hardware ECC >> >> controller, this
> >> >> + property must contain a phandle for the ECC controller node. >> The >> required
> >> >
> >> > I think there is already a 'ecc-engine' property used by MTK and >> Atmel
> >> > NAND controllers to point to the ECC engine block. Please use this
> >> > property instead of the ingenic specific one.
> >> >> ingenic,bch-controller is already in the devicetree ABI. I can't >> change it now...
> >
> > Oh, right...
> >
> > Well, same thing as before, maybe you can change it and keep the > driver
> > backward compatible? I don't want new DT to use this property because
> > it is not generic and we must have a way from the core to find the ECC
> > engine handle when the controller does not embed one itself (thus, the
> > ecc-engine property which is around for quite some time already).
>
> I can do that. Will the new ECC framework work with the "ecc-engine" property?
Yes.
Right now it does not, but when supporting raw NAND devices, it will
have to.
Thanks,
Miquèl
next prev parent reply other threads:[~2019-03-13 13:12 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-09 19:22 [PATCH v4 1/9] dt-bindings: mtd: ingenic: Add compatible strings for JZ4740 and JZ4725B Paul Cercueil
2019-02-09 19:22 ` [PATCH v4 2/9] dt-bindings: mtd: ingenic: Change 'BCH' to 'ECC' in documentation Paul Cercueil
2019-02-13 21:46 ` Rob Herring
2019-03-04 9:50 ` Miquel Raynal
2019-03-04 18:23 ` Paul Cercueil
2019-03-04 18:58 ` Miquel Raynal
2019-03-13 12:59 ` Paul Cercueil
2019-03-13 13:12 ` Miquel Raynal [this message]
2019-02-09 19:22 ` [PATCH v4 3/9] mtd: rawnand: Move drivers for Ingenic SoCs to subfolder Paul Cercueil
2019-02-09 19:23 ` [PATCH v4 4/9] mtd: rawnand: ingenic: Use SPDX license notifiers Paul Cercueil
2019-02-09 19:23 ` [PATCH v4 5/9] mtd: rawnand: ingenic: Rename jz4780_nand driver to ingenic_nand Paul Cercueil
2019-02-09 19:23 ` [PATCH v4 6/9] mtd: rawnand: ingenic: Separate top-level and SoC specific code Paul Cercueil
2019-03-04 10:20 ` Miquel Raynal
2019-03-04 18:26 ` Paul Cercueil
2019-03-04 19:04 ` Miquel Raynal
2019-02-09 19:23 ` [PATCH v4 7/9] mtd: rawnand: ingenic: Add support for the JZ4740 Paul Cercueil
2019-03-04 10:34 ` Miquel Raynal
2019-03-04 18:28 ` Paul Cercueil
2019-03-04 19:07 ` Miquel Raynal
2019-02-09 19:23 ` [PATCH v4 8/9] mtd: rawnand: ingenic: Add support for the JZ4725B Paul Cercueil
2019-03-04 10:35 ` Miquel Raynal
2019-03-04 18:30 ` Paul Cercueil
2019-03-04 19:09 ` Miquel Raynal
2019-03-13 12:46 ` Paul Cercueil
2019-02-09 19:23 ` [PATCH v4 9/9] mtd: rawnand: ingenic: Add ooblayout for the Qi Ben Nanonote Paul Cercueil
2019-02-13 21:45 ` [PATCH v4 1/9] dt-bindings: mtd: ingenic: Add compatible strings for JZ4740 and JZ4725B Rob Herring
2019-03-04 9:45 ` Miquel Raynal
2019-03-04 18:22 ` Paul Cercueil
2019-03-04 18:51 ` Miquel Raynal
2019-03-13 12:55 ` Paul Cercueil
2019-03-13 13:09 ` Boris Brezillon
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