Quoting Dmitry Osipenko (2019-08-11 14:00:29) > A proper External Memory Controller clock rounding and parent selection > functionality is required by the EMC drivers, it is not available using > the generic clock implementation because only the Memory Controller driver > is aware of what clock rates are actually available for a particular > device. EMC drivers will have to register a Tegra-specific CLK-API > callback which will perform rounding of a requested rate. EMC clock users > won't be able to request EMC clock by getting -EPROBE_DEFER until EMC > driver is probed and the callback is set up. > > The functionality is somewhat similar to the clk-emc.c which serves > Tegra124+ SoCs. The later HW generations support more parent clock sources > and the HW configuration / integration with the EMC drivers differs a tad > from the older gens, hence it's not really worth to try to squash > everything into a single source file. > > Acked-by: Peter De Schrijver <pdeschrijver@xxxxxxxxxx> > Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx> > --- Acked-by: Stephen Boyd <sboyd@xxxxxxxxxx>
