Hi Sjoerd, On 1 December 2014 at 13:25, Sjoerd Simons <sjoerd.sim...@collabora.co.uk> wrote: > On Mon, 2014-12-01 at 13:09 -0700, Simon Glass wrote: >> +Akshay >> >> Hi Sjoerd, >> >> On 1 December 2014 at 03:03, Sjoerd Simons >> <sjoerd.sim...@collabora.co.uk> wrote: >> > Hey Simon, >> > >> > On Sun, 2014-11-30 at 11:56 -0700, Simon Glass wrote: >> >> On 27 November 2014 at 08:08, Sjoerd Simons >> >> <sjoerd.sim...@collabora.co.uk> wrote: >> >> > Unlike the Peach-Pit board, there is no parade edp to lvds bridge on the >> >> > Pi. So drop it from device-tree >> >> > >> >> > Signed-off-by: Sjoerd Simons <sjoerd.sim...@collabora.co.uk> >> >> > --- >> >> > Changes since v1: Only modify the DTB >> >> > >> >> > arch/arm/dts/exynos5800-peach-pi.dts | 5 ----- >> >> > 1 file changed, 5 deletions(-) >> >> >> >> Acked-by: Simon Glass <s...@chromium.org> >> >> >> >> Tested on snow, pit, pi (display does not yet work on Pi). >> > >> > Just to be clear, in your testing does the display not work on Pi? It >> > seems to be ok here (with u-boot starting chainloaded from one of the >> > KERN partitions) >> >> That's right, not in U-Boot. I think this is because some GPIOs need >> to be enabled to turn on the backlight etc. Maybe you have an EC which >> turns these on automatically? >> >> If current mainline is supposed to make the display work on Pi then I >> need to do some debugging. Please let me know. > > It does work on my machine, so i was wondering if it's a setup > difference. I'm using the chained u-boot method (iotw the standard > chromeos u-boot in flash starts main-line u-boot from mmc/SD), which > might well mean that the GPIOs you're referring to are still turned on > by the first u-boot (which it has to do to show me the unverified boot > warning screen)?
Yes that's right. Maybe Akshay / Ajay have ideas, or otherwise I can add this. I think it is two GPIOs, but it might be TPSCHROME also. Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot