linux-kernel - Re: [PATCH] regulator: twl: Enable regulators over the powerbus as well

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 for Android: free password hash cracker in your pocket

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

Date:	Fri, 25 Mar 2016 18:20:17 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>
Cc:	Sebastian Reichel <sre@...nel.org>, tony@...mide.com,
	lgirdwood@...il.com, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] regulator: twl: Enable regulators over the powerbus as
 well

On Fri, Mar 25, 2016 at 07:22:45PM +0200, Ivaylo Dimitrov wrote:

> On Nokia N900 regulators are left in the mode last set by the bootloader or
> by the stock kernel, depends on whether it is power-on or reboot from stock
> kernel to mainline. That leads to problem with devices connected to vmmc2
> regulator - when the device is rebooted from stock kernel vmmc2 is left in
> "sleep" mode (REGULATOR_STATUS_STANDBY in terms of regulator framework) and
> as noone in mainline kernel switches vmmc2 regulator to normal
> (REGULATOR_STATUS_NORMAL) mode, devices supplied by it does not get enough
> power to operate normally.

Then there is a constraint that the regulators must be in normal mode
and this needs to be expressed in the machine constraints.

Download attachment "signature.asc" of type "application/pgp-signature" (474 bytes)