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* [U-Boot] Disabling video in bootm (cleanup_before_linux)
@ 2012-09-21 16:38 Eric Nelson
  2012-09-21 17:22 ` Anatolij Gustschin
  0 siblings, 1 reply; 33+ messages in thread
From: Eric Nelson @ 2012-09-21 16:38 UTC (permalink / raw)
  To: u-boot

Hi all,

While looking into some trouble booting the latest Linux kernel patches
for i.MX6 display support, I found that the kernel driver was thrown off by
the interrupt status bits in the i.MX6 IPU.

Until and unless we have the ability to hand off a 'live' display, it seems
that we should disable the video driver as a part of the 'bootm' process.

At the very least, doing this will avoid the possibility of trash on the
display during the transition.

I've been looking, and I don't see a place to tap into this process.
It seems that having a shutdown routine for the display drivers
(cfb_console?) is the way to go.

Anybody know if I'm overlooking something?

Please advise,


Eric

^ permalink raw reply	[flat|nested] 33+ messages in thread

end of thread, other threads:[~2012-10-16  3:58 UTC | newest]

Thread overview: 33+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-09-21 16:38 [U-Boot] Disabling video in bootm (cleanup_before_linux) Eric Nelson
2012-09-21 17:22 ` Anatolij Gustschin
2012-09-21 17:44   ` Eric Nelson
2012-09-22 13:35     ` Otavio Salvador
2012-09-22 15:35       ` Eric Nelson
2012-09-22 15:37         ` Otavio Salvador
2012-09-21 20:36   ` [U-Boot] [PATCH 0/2] i.MX: ipufb: shut down IPU frame buffer before booting O/S Eric Nelson
2012-09-21 20:36     ` [U-Boot] [PATCH 1/2] i.MX: mxc_ipuv3_fb: add ipuv3_fb_shutdown() routine to stop IPU before bootm Eric Nelson
2012-09-22 13:42       ` Otavio Salvador
2012-09-22 14:37         ` Fabio Estevam
2012-09-22 14:39           ` Otavio Salvador
2012-09-23 15:56           ` Stefano Babic
2012-09-23 16:32             ` Dirk Behme
2012-09-23 16:46             ` Eric Nelson
2012-09-23 16:59               ` Fabio Estevam
2012-09-23 17:27               ` Stefano Babic
2012-09-23 18:13                 ` [U-Boot] Displays on i.MX (was Re: [PATCH 1/2]) Eric Nelson
2012-09-23 20:12                   ` [U-Boot] [PATCH] i2c_probe: update for use in scripting Eric Nelson
2012-10-16  3:58                     ` Heiko Schocher
2012-09-23 23:02                   ` [U-Boot] [PATCH 0/3] i.MX6: implement hdmidet command Eric Nelson
2012-09-23 23:02                     ` [U-Boot] [PATCH 1/3] i.MX6: add HDMI transmitter register declarations from kernel WIP Eric Nelson
2012-09-23 23:02                     ` [U-Boot] [PATCH 2/3] i.MX6: Add hdmidet command to detect attached HDMI monitor Eric Nelson
2012-09-23 23:02                     ` [U-Boot] [PATCH 3/3] i.MX6: mx6qsabrelite: Include hdmidet command Eric Nelson
2012-10-02  8:28                     ` [U-Boot] [PATCH 0/3] i.MX6: implement " Stefano Babic
2012-09-23 18:15                 ` [U-Boot] [PATCH 1/2] i.MX: mxc_ipuv3_fb: add ipuv3_fb_shutdown() routine to stop IPU before bootm Sascha Hauer
2012-09-23 17:30               ` [U-Boot] [PATCH V2 0/2] i.MX: ipufb: shut down IPU frame buffer before booting Eric Nelson
2012-09-23 17:30                 ` [U-Boot] [PATCH V2 1/2] i.MX: mxc_ipuv3_fb: add ipuv3_fb_shutdown() routine to stop IPU frame buffer Eric Nelson
2012-09-24  8:50                   ` Stefano Babic
2012-09-23 17:30                 ` [U-Boot] [PATCH V2 2/2] i.MX: shut down video before launch of O/S Eric Nelson
2012-09-24  8:50                   ` Stefano Babic
2012-09-21 20:36     ` [U-Boot] [PATCH " Eric Nelson
2012-09-21 22:41       ` Fabio Estevam
2012-09-21 23:02         ` Eric Nelson

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