On Tue, Jul 29, 2014 at 01:21:48PM +0200, Andreas Färber wrote: > Hi Ajay, > > Am 28.07.2014 08:13, schrieb Ajay kumar: > > On 7/27/14, Andreas Färber <afaerber@xxxxxxx> wrote: > >> Am 25.07.2014 21:22, schrieb Ajay Kumar: > >>> This series is based on exynos-drm-next branch of Inki Dae's tree at: > >>> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git > >>> > >>> I have tested this after adding few DT changes for exynos5250-snow, > >>> exynos5420-peach-pit and exynos5800-peach-pi boards. > >> > >> I'm trying to test this with a modified exynos5250-spring DT based off > >> kgene's for-next branch due to DT, and I run into the following: > >> > >> CC drivers/gpu/drm/bridge/ptn3460.o > >> drivers/gpu/drm/bridge/ptn3460.c: In function ‘ptn3460_post_encoder_init’: > >> drivers/gpu/drm/bridge/ptn3460.c:275:2: error: implicit declaration of > >> function ‘drm_connector_register’ [-Werror=implicit-function-declaration] > >> drm_connector_register(&ptn_bridge->connector); > >> ^ > > Hope this might help: > > http://www.spinics.net/lists/dri-devel/msg60578.html > > That fixed my build, thanks. > > Unfortunately the most I got on Spring with attached DT was a blank > screen with a white horizontal line in the middle. > > Do I need to specify a specific panel model for Spring? > > For testing I re-applied your iommu patches (which btw fail now for 5420 > due to disp_pd) but didn't know what to do about your panel-lvds > regulator patch now that it's gone. > > If I don't apply this series, then commenting out the dp-controller node > gets me a working display with simplefb as before. > > Regards, > Andreas > > -- > SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany > GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg > From 9172a26a8f0d0f0d170bd27e1c150ad204d8086a Mon Sep 17 00:00:00 2001 > From: =?UTF-8?q?Andreas=20F=C3=A4rber?= <afaerber@xxxxxxx> > Date: Sun, 27 Jul 2014 21:58:06 +0200 > Subject: [PATCH] ARM: dts: exynos5250: Add eDP/LVDS bridge to Spring > MIME-Version: 1.0 > Content-Type: text/plain; charset=UTF-8 > Content-Transfer-Encoding: 8bit > > Signed-off-by: Ajay Kumar <ajaykumar.rs@xxxxxxxxxxx> > [AF: Redone for v6] > Signed-off-by: Andreas F??rber <afaerber@xxxxxxx> > --- > arch/arm/boot/dts/exynos5250-spring.dts | 32 +++++++++++++++++++++++++++++++- > 1 file changed, 31 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/exynos5250-spring.dts b/arch/arm/boot/dts/exynos5250-spring.dts > index 687dfab86bc8..517b1ff2bfdf 100644 > --- a/arch/arm/boot/dts/exynos5250-spring.dts > +++ b/arch/arm/boot/dts/exynos5250-spring.dts > @@ -64,10 +64,14 @@ > vdd_pll-supply = <&s5m_ldo8_reg>; > }; > > + panel: panel { > + compatible = "simple-panel"; > + }; You can't do this. "simple-panel" isn't a valid panel model. It should probably be removed from the platform_of_match table in the driver. Thierry
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