[PATCH 0/4] Fix DP busy wait and defer disabling overlay plane

[Dan MacDonald]

Hi Phillipp

My SL was attached to a 27" UHD Acer S277HK Monitor.

I can disable those for the next patch but I get the impression thats
not the only issue here as I've gone from being able to get a picture
(but not the right res) in 4.10 to not getting any HDMI signal at all
with this patch.

Those flip errors have to be another bad sign, right?

Thanks

On Wed, Apr 5, 2017 at 2:51 PM, Philipp Zabel <p.zabel at pengutronix.de> wrote:
> On Tue, 2017-04-04 at 19:25 +0100, Dan MacDonald wrote:
>> It took just under 11 hours to build the Arch 4.11 armv7h kernel on my
>> SL. The good news is that the patch both applied and built OK this
>> time, and the kernel package installed fine. What didn't seem right is
>> that boot pauses for a minute or so on these lines:
>>
>> [ 4.458572] panel-simple panel-lcd: panel-lcd supply power not found,
>> using dummy regulator
>> [ 4.467736] panel-simple panel-lvds0: panel-lvds0 supply power not
>> found, using dummy regulator
>
> I have no idea where that delay comes from, but do you have the Okaya
> RS800480T-7x0GP parallel panel or the Hannstar HSD100PXN1 LVDS panel
> that are described in imx6qdl-sabrelite.dtsi connected to the SABRE Lite
> board? If not, could you try disabling them or the one that you don't
> have:
>
> ----------8<----------
> diff --git a/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi b/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi
> index 84131794e97b6..c291c2821345f 100644
> --- a/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-sabrelite.dtsi
> @@ -159,7 +159,7 @@
>                 brightness-levels = <0 4 8 16 32 64 128 255>;
>                 default-brightness-level = <7>;
>                 power-supply = <&reg_3p3v>;
> -               status = "okay";
> +               status = "disabled";
>         };
>
>         backlight_lvds: backlight-lvds {
> @@ -168,7 +168,7 @@
>                 brightness-levels = <0 4 8 16 32 64 128 255>;
>                 default-brightness-level = <7>;
>                 power-supply = <&reg_3p3v>;
> -               status = "okay";
> +               status = "disabled";
>         };
>
>         lcd_display: display at di0 {
> @@ -178,7 +178,7 @@
>                 interface-pix-fmt = "bgr666";
>                 pinctrl-names = "default";
>                 pinctrl-0 = <&pinctrl_j15>;
> -               status = "okay";
> +               status = "disabled";
>
>                 port at 0 {
>                         reg = <0>;
> @@ -200,6 +200,7 @@
>         panel-lcd {
>                 compatible = "okaya,rs800480t-7x0gp";
>                 backlight = <&backlight_lcd>;
> +               status = "disabled";
>
>                 port {
>                         lcd_panel_in: endpoint {
> @@ -211,6 +212,7 @@
>         panel-lvds0 {
>                 compatible = "hannstar,hsd100pxn1";
>                 backlight = <&backlight_lvds>;
> +               status = "disabled";
>
>                 port {
>                         panel_in: endpoint {
> ---------->8----------
>
> regards
> Philipp
>
>