Hi,

On Wednesday 14 February 2018 10:54 PM, Tony Lindgren wrote:

* Ulf Hansson [off-list ref] [180214 09:53]:

quoted

On 5 February 2018 at 13:50, Kishon Vijay Abraham I [off-list ref] wrote:

quoted

DRA74x EVM Rev H EVM comes with revision 2.0 silicon. However, earlier
versions of EVM can come with either revision 1.1 or revision 1.0 of
silicon.

The device-tree file is written to support rev 2.0 of silicon.
pdata-quirks are used to then override the settings needed for
PG 1.1 silicon.

PG 1.1 silicon has limitations w.r.t frequencies at which MMC1/2/3
can operate as well as different IOdelay numbers.

I fail to understand the need for platform data. Why can't DT be used
for the older revisions as well?

It was decided to have dt file for a single soc revision. So the default dts
corresponds to rev 2.0.

Maybe the silicon revision is not available via soc_device_match()?

hmm.. looks like we can get rid of pdata if we use soc_device_match. Thanks for
the hint.

Regards
Kishon