linux-kernel - Re: Regulator constraints and userspace consumer

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:	Thu, 15 Sep 2011 08:51:48 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Marcus Folkesson <marcus.folkesson@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Regulator constraints and userspace consumer

On Thu, Sep 15, 2011 at 07:21:24AM +0200, Marcus Folkesson wrote:

> We are working on an Software Defined Radio (SDR) in which power
> consumption is an important part of the product.
> The "modem" application executes in user space and has the
> responsibility to turn the voltage regulators on/off to the radio card
> and so on.
> When the application goes into power-down mode, there are circuits
> that are not used and we are able to reduce the voltage further by set
> down a few boost regulators.

I'd expect you have some sort of kernel mode driver for the hardware
side of things - shouldn't that be able to manage the regulators for
you?  What happens when someone deploys the software on a different
board?
--
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/