From mboxrd@z Thu Jan  1 00:00:00 1970
From: viresh.kumar@linaro.org (Viresh Kumar)
Date: Wed, 3 Feb 2016 07:40:52 +0530
Subject: Plain DFS (no voltage scaling)
In-Reply-To: <56B11B67.3090600@free.fr>
References: <56B11B67.3090600@free.fr>
Message-ID: <20160203021052.GK31828@vireshk>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 02-02-16, 22:11, Mason wrote:
> Hello,
> 
> I plan to enable the on-demand governor on the tango platform:
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/tango4-smp8758.dtsi
> 
> I found the cpufreq-dt binding doc:
> 
> https://www.kernel.org/doc/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt
> https://www.kernel.org/doc/Documentation/devicetree/bindings/opp/opp.txt
> 
> Something is not clear to me:
> 
> If my platform cannot scale the voltage, what information
> should I put in the voltage part of the DT?

Wouldn't matter if there is no regulator. i.e. you should keep 0, but
even if they have something non-zero, core code will ignore it. But
yeah, it makes sense to keep it zero.

-- 
viresh