Re: [next] Odroid XU3 boot fail after cpufreq: dt: Use dev_pm_opp_set_rate() to switch frequency

[Krzysztof Kozlowski]

W dniu 14.02.2016 o 14:22, Viresh Kumar pisze:
> On 14-02-16, 13:56, Krzysztof Kozlowski wrote:
>> Hi all,
>>
>> Recently Odroid XU3 failed to boot on linux-next
>> on multi_v7 defconfig. exynos defconfig boots fine.
>>
>> Probably the "cpufreq: dt: Use dev_pm_opp_set_rate() to
>> switch frequency" is important here:
>> commit 78c3ba5df96c875b1668e1cd3ee0a69e62454f32
>> Author: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
>> Date:   Tue Feb 9 10:30:46 2016 +0530
>>
>>     cpufreq: dt: Use dev_pm_opp_set_rate() to switch frequency
>>     
>>     OPP core supports frequency/voltage changes based on the target
>>     frequency now, use that instead of open coding the same in cpufreq-dt
>>     driver.
>>     
>>     Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
>>     Reviewed-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
>>     Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> 
> Can you please try the below untested patch please ?

Thanks for quick reply. The patch fixed the problem.

Tested-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>

Best regards,
Krzysztof

> diff --git a/drivers/base/power/opp/core.c b/drivers/base/power/opp/core.c
> index d7cd4e265766..a97b333036c9 100644
> --- a/drivers/base/power/opp/core.c
> +++ b/drivers/base/power/opp/core.c
> @@ -1156,9 +1156,15 @@ static int opp_parse_supplies(struct dev_pm_opp *opp, struct device *dev,
>  		return -EINVAL;
>  	}
>  
> -	opp->u_volt = microvolt[0];
> -	opp->u_volt_min = microvolt[1];
> -	opp->u_volt_max = microvolt[2];
> +	if (count == 1) {
> +		opp->u_volt = microvolt[0];
> +		opp->u_volt_min = opp->u_volt;
> +		opp->u_volt_max = opp->u_volt;
> +	} else {
> +		opp->u_volt = microvolt[0];
> +		opp->u_volt_min = microvolt[1];
> +		opp->u_volt_max = microvolt[2];
> +	}
>  
>  	/* Search for "opp-microamp-<name>" */
>  	prop = NULL;
>