On Wed, Apr 26, 2017 at 10:02:39AM +0530, Rajendra Nayak wrote:
On 17/04/17 06:27, Viresh Kumar wrote:
If we are looking this power-domains with performance as just some *advanced regulators*, I don't like the complexity added.
- Mark
I don;t see any public discussions on why we ruled out using regulators to support this but maybe there were some offline discussions on this.
Mark, this is a long thread, so just summarizing here to give you the context.
At qualcomm, we have an external M3 core (running its own firmware) which controls a few voltage rails (including AVS on those). The devices vote for the voltage levels (or performance levels) they need by passing an integer value to the M3 (not actual voltage values). Since that didn't fit well with the existing regulator apis it was
As I'm getting fed up of saying: if the values you are setting are not voltages and do not behave like voltages then the hardware should not be represented as a voltage regulator since if they are represented as voltage regulators things will expect to be able to control them as voltage regulators. This hardware is quite clearly providing OPPs directly, I would expect this to be handled in the OPP code somehow.