[PATCH] WIP: Nokia RX-51: Convert to CONFIG_DM_VIDEO

[Pali Rohár]

On Thursday 17 February 2022 09:53:39 Anatolij Gustschin wrote:
> Hi Pali,
> 
> On Wed, 16 Feb 2022 21:42:19 +0100
> Pali Rohár pali at kernel.org wrote:
> 
> > ---
> > I had to comment "return -ENOSPC;" in video-uclass.c because without it
> > DM_VIDEO does not work and I do not know why. This looks like either
> > false-positive test or a bug in DM_VIDEO code. I have already set
> > PRE_RELOC flag but it has no effect on that code.
> 
> Probably the frame buffer memory allocation did not work. 
> Could you please try with a bind callback, i.e.:
> 
> static int rx51_video_bind(struct udevice *dev)
> {
> 	struct video_uc_plat *plat = dev_get_uclass_plat(dev);
> 
> 	plat->size = 800 * 480 * 2;
> 	return 0;
> }
> ...
> U_BOOT_DRIVER(rx51_video) = {
> 	.name = "rx51_video",
> 	.id = UCLASS_VIDEO,
> 	.bind = rx51_video_bind,
> 	.probe = rx51_video_probe,
> 	.flags = DM_FLAG_PRE_RELOC,
> };

Hello! It does not work too. Here is the output:

U-Boot 2022.04-rc2-00002-ga2c1a9878375-dirty (Jan 01 1970 - 00:00:00 +0000)

OMAP35XX-GP ES3.1, CPU-OPP2, L3-165MHz, Max CPU Clock 600 MHz
DRAM:  Video frame buffers from 8fe30000 to 8fe30000
256 MiB
Video device 'rx51_video' cannot allocate frame buffer memory -ensure the device is set up before relocation

If "return -ENOSPC;" is not commented then this is the last printed
line. If it is commented then output continues with:

video_post_bind: Claiming 130000 bytes at 8fd00000 for video device 'rx51_video'

And framebuffer is working fine like without above rx51_video_bind()
change.

> > 
> > Second thing is that CONFIG_VIDEO_LOGO is broken and does not work even it
> > is enabled in config file. I do not know why too.
> > 
> > Any idea?
> 
> Not yet. There were some logo related changes recently, but if I
> remember correctly, I tested them on wandboard and nitrogen6q
> targets and with sandbox, and logo drawing worked there.
> 
> --
> Anatolij