Le lun. 4 mars 2019 à 15:58, Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
a écrit :
Hi Paul,
Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote on Mon, 04 Mar 2019
19:23:50
+0100:
On Mon, Mar 4, 2019 at 10:50 AM, Miquel Raynal
<miquel.raynal@xxxxxxxxxxx> wrote:
> Hi Paul,
>
> Paul Cercueil <paul@xxxxxxxxxxxxxxx
<mailto:paul@xxxxxxxxxxxxxxx>> > 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@xxxxxxxxxxxxxxx >>
<mailto:paul@xxxxxxxxxxxxxxx>>
>> ---
>> >> 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?
-Paul
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