Anson Huang
b4573d1d65
cpufreq: imx6q: correct VDDSOC/PU voltage scaling when cpufreq is changed ...
on i.MX6Q, cpu freq change need to follow below flows:
1. each setpoint has different VDDARM, VDDSOC/PU voltage, get the setpoint
table from dts;
2. when cpu freq is scaling up, need to increase VDDSOC/PU voltage before
VDDARM, if VDDPU is off, no need to change it;
3. when cpu freq is scaling down, need to decrease VDDARM voltage before
VDDSOC/PU, if VDDPU is off, no need to change it;
normally dts will pass vddsoc/pu freq/volt info to kernel, if not, will
use fixed value for vddsoc/pu voltage setting.
Signed-off-by: Anson Huang <b20788@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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