Re: [PATCH RESEND V6 2/2] clk: imx: scu: add cpu frequency scaling support
From: Stephen Boyd <sboyd@kernel.org>
Date: 2019-02-22 19:03:53
Also in:
linux-clk, linux-devicetree, lkml
Quoting Anson Huang (2019-02-21 18:32:10)
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 <redacted> ---
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