Re: Xilinx SYSACE driver and 8-bit attachment

From: Grant Likely
Date: Wed Oct 07 2009 - 09:36:24 EST


[Added devicetree-discuss to cc: list]

On Wed, Oct 7, 2009 at 1:13 AM, John Williams
<john.williams@xxxxxxxxxxxxx> wrote:
> Hi Grant (it's your driver :) and David D ( and your DTS generator :)
[...]
> if (of_find_property(op->node, "8-bit", NULL))
[...]
> doesn't match the properties generated by Xilinx's device tree generator:
[...]
>                         xlnx,mem-width = <0x8>;
>
> So, the question is, which should change?

Well, obviously its a device tree generator bug, the driver code is
perfect. :-P

In all seriousness though, the '8-bit' property has been present for a
while now and needs to be retained to not break existing users. It
would be okay for the driver to be modified to *also* check for the
xlnx,mem-width property, but the better solution is to modify the
device tree generator. Plus, the '8-bit' property is the documented
binding in Documentation/powerpc/dts-bindings/xilinx.txt

Cheers,
g.

--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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