Re: [PATCH V7 2/2] clk: imx: scu: add cpu frequency scaling support
From: Stephen Boyd
Date: Tue Feb 26 2019 - 13:08:42 EST
Quoting Anson Huang (2019-02-25 21:17:36)
> 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>
Applied to clk-next