Messages in this thread | | | Date | Thu, 29 Sep 2016 18:58:05 +0000 | From | Karl Beldan <> | Subject | Re: [PATCH 4/6] ARM: dts: da850-lcdk: add support for 1024x768 resolution |
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Hi,
On Thu, Sep 29, 2016 at 06:31:53PM +0200, Bartosz Golaszewski wrote: > Add svga timings for 1024x768 resolution to the da850-lcdk > device tree. > > Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> > --- > arch/arm/boot/dts/da850-lcdk.dts | 15 +++++++++++++-- > 1 file changed, 13 insertions(+), 2 deletions(-) > > diff --git a/arch/arm/boot/dts/da850-lcdk.dts b/arch/arm/boot/dts/da850-lcdk.dts > index 6ca5d48..6e4288c 100644 > --- a/arch/arm/boot/dts/da850-lcdk.dts > +++ b/arch/arm/boot/dts/da850-lcdk.dts > @@ -70,8 +70,8 @@ > }; > > display-timings { > - native-mode = <&svga_timings>; > - svga_timings: 800x600 { > + native-mode = <&svga_timing0>; > + svga_timing0: 800x600 { > clock-frequency = <37500000>; > hactive = <800>; > hback-porch = <140>; > @@ -82,6 +82,17 @@ > vfront-porch = <1>; > vsync-len = <4>; > }; > + svga_timing1: 1024x768 { > + clock-frequency = <72000000>; > + hactive = <1024>; > + hback-porch = <140>; > + hfront-porch = <40>; > + hsync-len = <128>; > + vactive = <768>; > + vback-porch = <23>; > + vfront-porch = <1>; > + vsync-len = <4>; > + };
Why do you also call 1024x768 svga ?
I don't think the LCDK can cope with this resolution at this frequency (in terms of mem bandwidth), at least that's what I observed back in August. If confirmed I think it is worth mentioning in the log at least, but then I doubt adding this config would be useful.
Regards, Karl
> }; > }; > }; > -- > 2.7.4 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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