On Mar 12, 2014, at 12:07 PM, Boris BREZILLON <b.brezillon....@gmail.com> wrote:
> Add documentation for the ONFI NAND timing mode property.
I don't see a Toggle/JEDEC mode timing property. Will that be defined for
Toshiba, Samsung
and San Disk flash? Or will this be limited to Micron, Intel and Hynix (the
only ones
supporting ONFI)?
Warner
> Signed-off-by: Boris BREZILLON <b.brezillon....@gmail.com>
> ---
> Documentation/devicetree/bindings/mtd/nand.txt | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mtd/nand.txt
> b/Documentation/devicetree/bindings/mtd/nand.txt
> index b53f92e..2046027 100644
> --- a/Documentation/devicetree/bindings/mtd/nand.txt
> +++ b/Documentation/devicetree/bindings/mtd/nand.txt
> @@ -19,3 +19,11 @@ errors per {size} bytes".
> The interpretation of these parameters is implementation-defined, so not all
> implementations must support all possible combinations. However,
> implementations
> are encouraged to further specify the value(s) they support.
> +
> +- onfi,nand-timing-mode: an integer encoding the supported ONFI timing modes
> of
> + the NAND chip. Each supported mode is represented as a bit position (i.e. :
> + mode 0 and 1 => (1 << 0) | (1 << 1) = 0x3).
> + This is only used when the chip does not support the ONFI standard.
> + The last bit set represent the closest mode fulfilling the NAND chip
> timings.
> + For a full description of the different timing modes see this document:
> + www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf
> --
> 1.7.9.5
>
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