[RFC 3/8] cpufreq: imx6q: Set max suspend_freq to avoid changes during suspend

Viresh Kumar viresh.kumar at linaro.org
Wed Mar 22 21:34:27 PDT 2017


On 22-03-17, 18:53, Leonard Crestez wrote:
> If the cpufreq driver tries to modify voltage/freq during suspend/resume
> it might need to control an external PMIC via I2C or SPI but those
> devices might be already suspended.
> 
> To avoid this scenario we just increase cpufreq to highest setpoint
> before suspend. This issue can easily be triggered by ldo-bypass but in
> theory any regulator set_voltage call can end up having to modify
> external supply voltages.
> 
> Signed-off-by: Leonard Crestez <leonard.crestez at nxp.com>
> ---
>  drivers/cpufreq/imx6q-cpufreq.c | 2 ++
>  1 file changed, 2 insertions(+)

Acked-by: Viresh Kumar <viresh.kumar at linaro.org>

-- 
viresh



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