lkml.org 
[lkml]   [2016]   [Aug]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 3/9] regulator: core: Try full range when adjusting regulators to constraints
On Mon, Aug 22, 2016 at 07:52:05PM +0200, Rask Ingemann Lambertsen wrote:
> On Mon, Aug 22, 2016 at 05:29:07PM +0100, Mark Brown wrote:

> > This seems like you have buggy constraints, constraints which allow
> > voltages that can't physically be satisfied don't make obvious sense.

> No, it's for cases like this (see the cubietruck4 or a80-optimus dts
> patches):

> reg_bldo4: bldo4 {
> regulator-min-microvolt = <1080000>;
> regulator-max-microvolt = <1320000>;
> regulator-name = "vcc12-hsic";
> };

> The regulator can do 1100000 uV, 1200000 uV and 1300000 uV, all of which
> are within the constraints, so obviously the constraints can be satisfied,
> yet the regulator core fails do so with a message like this:

Sure, but the constraints also say that you can do 1.32V which the
system is not physically capable of delivering. That's not a good sign
for the constraints, it suggests that at least the capabilities of the
regulator have not been taken into consideration when setting up the
constraints.
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2016-09-17 09:57    [W:0.054 / U:1.536 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site