linux-kernel - Re: [PATCH] cpufreq: powernv: Define methods to parse positive & negative pstates

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Message-ID: <20171205054130.vsr45ekas3f5k3cg@vireshk-mac-ubuntu>
Date:   Tue, 5 Dec 2017 11:11:30 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com>
Cc:     linux-pm@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, rjw@...ysocki.net,
        svaidy@...ux.vnet.ibm.com, akshay.adiga@...ux.vnet.ibm.com,
        huntbag@...ux.vnet.ibm.com,
        "Gautham R. Shenoy" <ego@...ux.vnet.ibm.com>
Subject: Re: [PATCH] cpufreq: powernv: Define methods to parse positive &
 negative pstates

On 30-11-17, 10:13, Shilpasri G Bhat wrote:
> From: "Gautham R. Shenoy" <ego@...ux.vnet.ibm.com>
> 
> Pstates are 8bit values but on POWER8 they are negative and on POWER9
> they are positive. This patch adds helper routines to differentiate
> the sign to read the correct pstate value.
> 
> Signed-off-by: Gautham R. Shenoy <ego@...ux.vnet.ibm.com>
> Tested-by: Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com>
> ---
>  drivers/cpufreq/powernv-cpufreq.c | 43 ++++++++++++++++++++++++++++++---------
>  1 file changed, 33 insertions(+), 10 deletions(-)

Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

-- 
viresh