On 11/30/2016 05:08 AM, Jan Lübbe wrote:

On Mo, 2016-11-28 at 17:04 -0600, Grygorii Strashko wrote:

quoted

This patch adds support of the CPTS HW_TS_PUSH events which are generated
by external low frequency time stamp channels on TI's OMAP CPSW and
Keystone 2 platforms. It supports up to 8 external time stamp channels for
HW_TS_PUSH input pins (the number of supported channel is different for
different SoCs and CPTS versions, check corresponding Data maual before
enabling it). Therefore, new DT property "cpts-ext-ts-inputs" is introduced
for specifying number of available external timestamp channels.

If this only depends on SoC and CTPS, it should be possible to derive
the correct value from the compatible value and possibly a CPTS version
register? If the existing compatible strings are not specific enough,
possible a new one should be added.

In general, I can try to add and use new compat strings
"ti,netcp-k2hk"
"ti,netcp-k2l"
"ti,netcp-k2e"
"ti,netcp-k2g" 
for determining CPTS capabilities.

CPTS version is not the choice due to very poor documentation
which do not allow identify relations between CPTS ver and supported
features :(

Murali, what do you think?


-- 
regards,
-grygorii