Re: Rcar Gen2: DU: Bootlogs Error and show image error

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hello Cao Minh-san,

(this is a bit of a stupid question, and I apologize for that, but what is the 
proper way to address you, Cao-san, Cao Minh-san, Hiep-san, or something else 
?)

On Thursday 10 December 2015 10:43:18 Cao Minh Hiep wrote:
> 
> >>> Yes, CONFIG_DRM_I2C_ADV7511=y has already enabled in default config at
> >>> v4.4-rc2.
> >>> I also have enabled CONFIG_DRM_SHMOBILE and CONFIG_FB_SH_MOBILE_HDMI
> >>> then test.
> >>> But It has nothing change.
> >>> Is there other configuration or reason could we think?
> >> 
> >> Does this problem happen on your board?
> >> If not, Could you please send me your config file?.
> > 
> > Sorry for the delay, I wanted to retry on my Koelsch board before
> > replying.
> > 
> > The probe deferral error (-517) you're seeing is normal, it comes from the
> > DU being probed before its dependencies. Probe is deferred and retried,
> > and finally succeeds as shown by
> > 
> > [drm] Initialized rcar-du 1.0.0 20130110 on minor 0
> > 
> > With a stock v4.4-rc2 kernel I get the same result, and I can then use the
> > HDMI output without any issue with the modetest application.
> > 
> > I've attached the kernel configuration I used for testing, just in case.
> 
> Thanks, I have changed our HDMI display device(Old one -> other newer one),
> and then I could show a image on the display successfully. This test is
> on Koelsch board.
> But I found that, before showing the image on HDMI display,
> I have to enable CONFIG_FRAMEBUFFER_CONSOLE =y or
> run a command something like "fbset -xres 640 -yres 480 -laced 0", in
> order to clear the first screen.
> 
> On Lager, with the same test method, I could show a image on RGB display
> very well,
> but when I showed image on HDMI display, The image showed on display
> looks bad as attached picture.
> The attached picture: HDMI-Display-image-showed-from-Lager.jpg
> 
> Please have a look and show me what i have to do!

I'll try to reproduce that. Could you please send me the image file and the 
exact test procedure ?

-- 
Regards,

Laurent Pinchart