linux-kernel - Re: [Q] regulators: 3-current-regulated supply

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

Message-ID: <20121115071838.GI7599@opensource.wolfsonmicro.com>
Date:	Thu, 15 Nov 2012 16:18:39 +0900
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Guennadi Liakhovetski <g.liakhovetski@....de>
Cc:	linux-kernel@...r.kernel.org, Liam Girdwood <lrg@...com>
Subject: Re: [Q] regulators: 3-current-regulated supply

On Thu, Nov 15, 2012 at 08:15:15AM +0100, Guennadi Liakhovetski wrote:

> parts are pretty simple - DCDC step-down, LDO. The first step-up DCDC 
> isn't a problem either. It's the second step-up supply, that I'm having a 
> problem with. It's output voltage can be regulated by using either a 
> voltage feedback or the three current feedbacks. In the current feedback 
> mode one has a choice between a manual mode, in which case you just choose 
> one of the feedbacks and everything is simple again, or in automatic mode. 

This almost certainly has no other function than to drive a LED string
for a backlight; it's not sensible to represent it via the regulator
framework at all.  Just implement it as a backlight and/or LED driver
and have done with it unless you can find some other use for it.

Download attachment "signature.asc" of type "application/pgp-signature" (837 bytes)