Quoting Anson Huang (2019-02-14 01:55:57) > On NXP's i.MX SoCs with system controller inside, CPU frequency > scaling can ONLY be done by system controller firmware, and it > can ONLY be requested from secure mode, so Linux kernel has to > call ARM SMC to trap to ARM-Trusted-Firmware to request system > controller firmware to do CPU frequency scaling. > > This patch adds i.MX system controller CPU frequency scaling support, > it reuses cpufreq-dt driver and implement the CPU frequency scaling > inside SCU clock driver. > > Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx> > --- Acked-by: Stephen Boyd <sboyd@xxxxxxxxxx>
