| Message ID | 20200222223154.221632-3-megous@megous.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Assortment of fixes for TBS A711 Tablet | expand |
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? 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 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.
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 @@ ®_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 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.
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"; };
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> --- arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)