Re: [PATCH v3 0/6] Introduce Bandwidth OPPs for interconnect paths

Viresh Kumar
2019-07-03T06:36:37Z

On 02-07-19, 18:10, Saravana Kannan wrote:
> Interconnects and interconnect paths quantify their performance levels in
> terms of bandwidth and not in terms of frequency. So similar to how we have
> frequency based OPP tables in DT and in the OPP framework, we need
> bandwidth OPP table support in the OPP framework and in DT. Since there can
> be more than one interconnect path used by a device, we also need a way to
> assign a bandwidth OPP table to an interconnect path.
>
> This patch series:
> - Adds opp-peak-KBps and opp-avg-KBps properties to OPP DT bindings
> - Adds interconnect-opp-table property to interconnect DT bindings
> - Adds OPP helper functions for bandwidth OPP tables
> - Adds icc_get_opp_table() to get the OPP table for an interconnect path
>
> So with the DT bindings added in this patch series, the DT for a GPU
> that does bandwidth voting from GPU to Cache and GPU to DDR would look
> something like this:

And what changed since V2 ?

--
viresh