Re: [PATCH v5 0/17] Add Analogix Core Display Port Driver

[Yakir Yang]

Hi Javier,

On 10/07/2015 07:25 PM, Javier Martinez Canillas wrote:
> Hello Yakir,
>
> On 10/07/2015 01:05 PM, Yakir Yang wrote:
> > Hi Javier,
> >
> > On 10/07/2015 05:26 PM, Javier Martinez Canillas wrote:
> > > Hello Yakir,
> > >
> > > On 10/07/2015 11:02 AM, Yakir Yang wrote:
> > > > Hi Javier,
> > > >
> > > > On 10/07/2015 04:46 PM, Javier Martinez Canillas wrote:
> > > > > Hello Yakir,
> > > > >
> > > > > On 10/07/2015 08:25 AM, Yakir Yang wrote:
> > > > > > Hi all,
> > > > > >
> > > > > > Friendly ping.....   :)
> > > > > >
> > > > > >
> > > > > > Best regards,
> > > > > > - Yakir
> > > > > Do you have a tree that I can use to test these patches?
> > > > Wow, thanks a lot, I do have a tree on github [https://github.com/yakir-Yang/linux/tree/analogix_dp],
> > > > crossing my finger, wish things works......    ;)
> > > I tried your analogix_dp branch on an Exynos5800 Peach Pi Chromebook
> > > but the machine didn't boot. Unfortunately I need to do some soldering
> > > to have a serial console on this board so don't have a kernel boot log.
> > >
> > > I'll let you know if I can get more info about this issue.
> > Whoops, sorry for the failed, much appreciated for your works.
> >
> > Besides, I thought maybe I can find a Peach Pit Chromebook in my side,
> > I remember that some of our guys have brought one, but previously I
> > thought that mainline kernel wouldn't run on Peach Pit directly.
> Great, mainline works correctly on all Exynos based Chromebooks.
>
> > Maybe you can email me the method the run mainline kernel on Peach
> > Pit, so I can debug the analogix_dp driver at the same time, that would
> > be great.
> I wrote a little blog post explaining how to run mainline on these boards:
>
> http://blogs.s-osg.org/install-linux-mainline-kernel-distro-exynos-chromebooks/
>
> That explains the simplest setup though so if you need a different one
> (i.e: chain loading a non verified u-boot) or if you have any questions,
> feel free to contact me in private and I can help you with the setup.

Ah, thanks, gonna to step-by-step.

- Yakir

> > > Also, there is Kconfig recursive dependency that you may want to fix:
> > >
> > > $ make exynos_defconfig
> > > drivers/video/fbdev/Kconfig:5:error: recursive dependency detected!
> > > drivers/video/fbdev/Kconfig:5: symbol FB is selected by DRM_KMS_FB_HELPER
> > > drivers/gpu/drm/Kconfig:34: symbol DRM_KMS_FB_HELPER depends on DRM_KMS_HELPER
> > > drivers/gpu/drm/Kconfig:28: symbol DRM_KMS_HELPER is selected by DRM_ANALOGIX_DP
> > > drivers/gpu/drm/bridge/analogix/Kconfig:1: symbol DRM_ANALOGIX_DP is selected by DRM_EXYNOS_DP
> > > drivers/gpu/drm/exynos/Kconfig:57: symbol DRM_EXYNOS_DP depends on DRM_EXYNOS_FIMD
> > > drivers/gpu/drm/exynos/Kconfig:19: symbol DRM_EXYNOS_FIMD depends on FB_S3C
> > > drivers/video/fbdev/Kconfig:2023: symbol FB_S3C depends on FB
> > >    
> > Yeah, recursive dependency detected, guess I should remove the
> > "DRM_KMS_HELPER" from bridge analogix_dp Kconfig file, thanks
> > for your remind.
> >
> > --- a/drivers/gpu/drm/bridge/analogix/Kconfig
> > +++ b/drivers/gpu/drm/bridge/analogix/Kconfig
> > @@ -1,4 +1,3 @@
> >   config DRM_ANALOGIX_DP
> >          tristate
> >          depends on DRM
> > -       select DRM_KMS_HELPER
> That fixes the recursive dependency issue indeed. Thanks.
>
> > Thanks,
> > - Yakir
> Best regards,


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