linux-kernel - Re: [PATCH 3/3] cpufreq: dt: Tolerance applies on both sides of target voltage

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Wed, 2 Sep 2015 15:14:56 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Lucas Stach <l.stach@...gutronix.de>
Cc:	Rafael Wysocki <rjw@...ysocki.net>, linaro-kernel@...ts.linaro.org,
	linux-pm@...r.kernel.org, open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] cpufreq: dt: Tolerance applies on both sides of
 target voltage

On 02-09-15, 11:39, Lucas Stach wrote:
> Am Mittwoch, den 02.09.2015, 14:36 +0530 schrieb Viresh Kumar:
> > Tolerance applies on both sides of the target voltage, i.e. both min and
> > max sides.
> 
> While I'm not really comfortable with the above, it is exactly how OPPv1
> and the voltage tolerance property are specified.
> 
> Reviewed-by: Lucas Stach <l.stach@...gutronix.de>

Thanks.

And this is exactly how the regulator API work:

static inline int regulator_set_voltage_tol(struct regulator *regulator,
					    int new_uV, int tol_uV)
{
	if (regulator_set_voltage(regulator, new_uV, new_uV + tol_uV) == 0)
		return 0;
	else
		return regulator_set_voltage(regulator,
					     new_uV - tol_uV, new_uV + tol_uV);
}



But yeah, OPP-v2 is going to take care of this with target/min/max
values..

-- 
viresh
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/