Hi Paul,
Paul Cercueil <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>
> ---
>
> 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.
> properties for this node are described below. If this is not specified,
> - software BCH will be used instead.
> + software ECC will be used instead.
>
> Optional children nodes:
> - Individual NAND chips are children of the NAND controller node.
> @@ -70,17 +70,17 @@ nemc: nemc@13410000 {
> };
> };
>
> -The BCH controller is a separate SoC component used for error correction on
> +The ECC controller is a separate SoC component used for error correction on
> NAND devices. The following is a description of the device properties for a
> -BCH controller.
> +ECC controller.
>
> -Required BCH properties:
> +Required ECC properties:
> - compatible: Should be one of:
> * ingenic,jz4740-ecc
> * ingenic,jz4725b-bch
> * ingenic,jz4780-bch
> -- reg: Should specify the BCH controller registers location and length.
> -- clocks: Clock for the BCH controller.
> +- reg: Should specify the ECC controller registers location and length.
> +- clocks: Clock for the ECC controller.
>
> Example:
>
Thanks,
Miquèl
