lkml.org 
[lkml]   [2019]   [Jun]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 0/4] ARM: dts: meson8b: add VDDEE / mali-supply
On Wed, Jun 12, 2019 at 1:32 AM Kevin Hilman <khilman@baylibre.com> wrote:
>
> Martin Blumenstingl <martin.blumenstingl@googlemail.com> writes:
>
> > EC-100 and Odroid-C1 use a "copy" of the VCCK regulator as "VDDEE"
> > regulator. VDDEE supplies the Mali GPU and various other bits within
> > the SoC.
> >
> > The VDDEE regulator is not exclusive to the Mali GPU so it must not
> > change it's voltage. The GPU OPP table has a fixed voltage for all
> > frequencies of 1.10V. This matches with what u-boot sets on my EC-100
> > and Odroid-C1.
> >
> > Dependencies:
> > - compile time: patch #4 depends on my other patch "ARM: meson8b-mxq:
> > better support for the TRONFY MXQ" from [0]
> > - runtime: we don't want the kernel to change the output of the VDDEE
> > regulator to the maximum value. Thus the PWM driver has to be able
> > to read the PWM period and duty cycle from u-boot. This is supported
> > with my series called "pwm-meson: cleanups and improvements" from [1]
>
> Just FYI... unless I hear otherwise, I'll wait for the PWM cleanups to
> land before queuing this series.
I'm happy with that because I'm not sure what will happen *without*
the PWM improvements


Martin

\
 
 \ /
  Last update: 2019-06-12 21:10    [W:0.072 / U:11.876 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site