| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 29 Sep 2016 18:58:05 +0000
From: Karl Beldan <karl.beldan@...il.com>
To: Bartosz Golaszewski <bgolaszewski@...libre.com>
Cc: Kevin Hilman <khilman@...libre.com>,
Michael Turquette <mturquette@...libre.com>,
Sekhar Nori <nsekhar@...com>, Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Russell King <linux@...linux.org.uk>,
LKML <linux-kernel@...r.kernel.org>,
arm-soc <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 4/6] ARM: dts: da850-lcdk: add support for 1024x768
resolution
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@...libre.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@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Powered by blists - more mailing lists