On 06-12-24, 22:11, Christian Marangi wrote: > On newer Airoha SoC, CPU Frequency is scaled indirectly with SMC commands > to ATF. > > A virtual clock is exposed. This virtual clock is a get-only clock and > is used to expose the current global CPU clock. The frequency info comes > by the output of the SMC command that reports the clock in MHz. > > The SMC sets the CPU clock by providing an index, this is modelled as > performance states in a power domain. > > CPUs can't be individually scaled as the CPU frequency is shared across > all CPUs and is global. > > Signed-off-by: Christian Marangi <ansuelsmth@xxxxxxxxx> > Reviewed-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > --- > Changes v7: > - Add more info to the description for usage of clock and > performance-domain > - Drop redundant nodes from example Applied. Thanks. -- viresh
