4.1-rc1+ lcd fail to start - История изменений

Zombah: add one more discussion

2016-03-11T09:57:13Z

add one more discussion

← Предыдущая версия		Версия от 09:57, 11 марта 2016
Строка 40:		Строка 40:
	<tagr_> zombah: you could possibly achieve the same effect by adding msleep() at various points in the panel driver		<tagr_> zombah: you could possibly achieve the same effect by adding msleep() at various points in the panel driver
	<tagr_> zombah: such as at the beginning of ->prepare() and ->enable()		<tagr_> zombah: such as at the beginning of ->prepare() and ->enable()
			</pre>

			<pre>
			<tagr> the only regulator connected to the panel is vdd_pnl_reg, and that gets enabled after the msleep() that zombah added, so I don't see how adding a ramp delay would help with that
			<tagr> marvin24: it looks like, from the schematic, +3VS is derived from +5valw, but that dependency isn't represented in DT, so technically this could be triggered by the +5valw and +3VS,vdd_pnl regulators being probe at almost the same time
			<marvin24> there is also backlight
	</pre>		</pre>

Zombah: add tagr recomendations

2016-03-10T10:13:06Z

add tagr recomendations

← Предыдущая версия		Версия от 10:13, 10 марта 2016
Строка 33:		Строка 33:
	[ 8.079160] [drm] Initialized tegra 0.0.0 20120330 on minor 0		[ 8.079160] [drm] Initialized tegra 0.0.0 20120330 on minor 0
	[ 8.084942] initcall deferred_probe_initcall+0x0/0x88 returned 0 after 126122 usecs		[ 8.084942] initcall deferred_probe_initcall+0x0/0x88 returned 0 after 126122 usecs
			</pre>

			<pre>
			<tagr_> zombah: I suspect power sequencing
			<tagr_> zombah: you might want to try with adding some post-ramp-delays to various regulators, perhaps the panel needs some time to start up, or the regulators need time to reach the voltage
			<tagr_> zombah: you could possibly achieve the same effect by adding msleep() at various points in the panel driver
			<tagr_> zombah: such as at the beginning of ->prepare() and ->enable()
	</pre>		</pre>

Zombah: /* Kernel 4.5-rc+ */ break lines

2016-03-09T14:40:01Z

Kernel 4.5-rc+: break lines

← Предыдущая версия		Версия от 14:40, 9 марта 2016
Строка 1:		Строка 1:
	==Kernel 4.5-rc+==		==Kernel 4.5-rc+==
	Kernel compiled with tegra_defconfig, added dummy vbus regulators to usb-phy.		Kernel compiled with tegra_defconfig, added dummy vbus regulators to usb-phy. <br/>

	Panel starts fine: http://pastebin.com/en7pauJU		Panel starts fine: http://pastebin.com/en7pauJU <br/>
	Panel failed to start: http://pastebin.com/5FjsBizU		Panel failed to start: http://pastebin.com/5FjsBizU <br/>

	DRM defered probe initcall compare:		DRM defered probe initcall compare:

Zombah: add 4.5-rc+

2016-03-09T14:38:38Z

add 4.5-rc+

Новая страница

==Kernel 4.5-rc+==
Kernel compiled with tegra_defconfig, added dummy vbus regulators to usb-phy.

Panel starts fine: http://pastebin.com/en7pauJU
Panel failed to start: http://pastebin.com/5FjsBizU

DRM defered probe initcall compare:
<pre>
fine:
[ 6.803695] calling deferred_probe_initcall+0x0/0x88 @ 1
[ 6.814731] tegra-dc 54200000.dc: failed to probe RGB output: -517
[ 6.820254] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 6.820256] [drm] No driver support for vblank timestamp query.
[ 7.396049] mmcblk0: p1
[ 7.406688] mmc1: new high speed MMC card at address 0001
[ 7.407711] mmcblk1: mmc1:0001 SEM08G 7.40 GiB
[ 7.408165] mmcblk1boot0: mmc1:0001 SEM08G partition 1 1.00 MiB
[ 7.408615] mmcblk1boot1: mmc1:0001 SEM08G partition 2 1.00 MiB
[ 7.416898] mmcblk1: p1 p2 p3 p4 p5 p6 p7 p8
[ 7.444594] Console: switching to colour frame buffer device 128x37
[ 7.485416] drm drm: fb0: frame buffer device
[ 7.519146] [drm] Initialized tegra 0.0.0 20120330 on minor 0
[ 7.524930] initcall deferred_probe_initcall+0x0/0x88 returned 0 after 704314 usecs

failed:
[ 7.950095] calling deferred_probe_initcall+0x0/0x88 @ 1
[ 7.957206] tegra-dc 54200000.dc: failed to probe RGB output: -517
[ 7.969720] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 7.976622] [drm] No driver support for vblank timestamp query.
[ 7.997470] input: ImPS/2 Generic Wheel Mouse as /devices/serio0/input/input4
[ 8.034635] Console: switching to colour frame buffer device 128x37
[ 8.054130] drm drm: fb0: frame buffer device
[ 8.079160] [drm] Initialized tegra 0.0.0 20120330 on minor 0
[ 8.084942] initcall deferred_probe_initcall+0x0/0x88 returned 0 after 126122 usecs
</pre>