lkml.org 
[lkml]   [2020]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [linux-sunxi] [PATCH 2/4] ARM: dts: sun8i-a83t-tbs-a711: HM5065 doesn't like such a high voltage
Hello,

On Sun, Feb 23, 2020 at 11:39:17AM +0800, Chen-Yu Tsai wrote:
> On Sun, Feb 23, 2020 at 6:32 AM Ondrej Jirman <megous@megous.com> wrote:
> >
> > Lowering the voltage solves the quick image degradation over time
> > (minutes), that was probably caused by overheating.
> >
> > Signed-off-by: Ondrej Jirman <megous@megous.com>
>
> Makes sense. A lot of camera sensors run their digital parts off 1.8V.
> This one is no different.
>
> Acked-by: Chen-Yu Tsai <wens@csie.org>
>
> The whole CSI stuff isn't enabled in the device tree yet though, and
> there are a lot of regulators with CSI in their names. Will this get
> worked on?

Yes, I'm preparing support for both cameras in this branch:

https://megous.com/git/linux/log/?h=cam-5.6

Both already work quite well. I'm just sending some fixes early.

Both cameras work best at 1.8V for the digital part.

regards,
o.

> ChenYu
>
> > ---
> > arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> > index ee5ce3556b2ad..ae1fd2ee3bcce 100644
> > --- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> > +++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> > @@ -371,8 +371,8 @@ &reg_dldo2 {
> > };
> >
> > &reg_dldo3 {
> > - regulator-min-microvolt = <2800000>;
> > - regulator-max-microvolt = <2800000>;
> > + regulator-min-microvolt = <1800000>;
> > + regulator-max-microvolt = <1800000>;
> > regulator-name = "vdd-csi";
> > };
> >
> > --
> > 2.25.1
> >
> > --
> > You received this message because you are subscribed to the Google Groups "linux-sunxi" group.
> > To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe@googlegroups.com.
> > To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/20200222223154.221632-3-megous%40megous.com.

\
 
 \ /
  Last update: 2020-02-23 10:58    [W:0.042 / U:1.824 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site