Lowering the voltage solves the quick image degradation over time
(minutes), that was probably caused by overheating.
Signed-off-by: Ondrej Jirman <[email protected]>
---
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 @@ ®_dldo2 {
};
®_dldo3 {
- regulator-min-microvolt = <2800000>;
- regulator-max-microvolt = <2800000>;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
regulator-name = "vdd-csi";
};
--
2.25.1
On Sun, Feb 23, 2020 at 6:32 AM Ondrej Jirman <[email protected]> wrote:
>
> Lowering the voltage solves the quick image degradation over time
> (minutes), that was probably caused by overheating.
>
> Signed-off-by: Ondrej Jirman <[email protected]>
Makes sense. A lot of camera sensors run their digital parts off 1.8V.
This one is no different.
Acked-by: Chen-Yu Tsai <[email protected]>
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?
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 @@ ®_dldo2 {
> };
>
> ®_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 [email protected].
> To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/20200222223154.221632-3-megous%40megous.com.
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 <[email protected]> wrote:
> >
> > Lowering the voltage solves the quick image degradation over time
> > (minutes), that was probably caused by overheating.
> >
> > Signed-off-by: Ondrej Jirman <[email protected]>
>
> Makes sense. A lot of camera sensors run their digital parts off 1.8V.
> This one is no different.
>
> Acked-by: Chen-Yu Tsai <[email protected]>
>
> 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 @@ ®_dldo2 {
> > };
> >
> > ®_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 [email protected].
> > To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/20200222223154.221632-3-megous%40megous.com.