Re: [PATCH] cpufreq: qcom-hw: enable boost support

[Bjorn Andersson <bjorn.andersson@linaro.org>]

On Wed 13 Jan 00:52 CST 2021, Shawn Guo wrote:

> At least on sdm850, the 2956800 khz is detected as a boost frequency in
> function qcom_cpufreq_hw_read_lut().  Let's enable boost support by
> calling cpufreq_enable_boost_support(), so that we can get the boost
> frequency by switching it on via 'boost' sysfs entry like below.
> 
>  $ echo 1 > /sys/devices/system/cpu/cpufreq/boost
> 
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Regards,
Bjorn

> ---
>  drivers/cpufreq/qcom-cpufreq-hw.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
> index 315ee987d2d3..6eb88463a24e 100644
> --- a/drivers/cpufreq/qcom-cpufreq-hw.c
> +++ b/drivers/cpufreq/qcom-cpufreq-hw.c
> @@ -351,6 +351,12 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
>  
>  	dev_pm_opp_of_register_em(cpu_dev, policy->cpus);
>  
> +	if (policy_has_boost_freq(policy)) {
> +		ret = cpufreq_enable_boost_support();
> +		if (ret)
> +			dev_warn(cpu_dev, "failed to enable boost: %d\n", ret);
> +	}
> +
>  	return 0;
>  error:
>  	devm_iounmap(dev, base);
> -- 
> 2.17.1
>