Hi Everyone,

I've sent this message yesterday but it didn't appear in the list.
Sending again.

I'm trying to develop an expansion board for Tobi.
There are just buffers and optocouplers for several I/Os in the expansion
board.
Additionally, I'm using a voltage regulator (http://goo.gl/gnkt7D) to feed
all the expansion and Tobi together.
Since the regulator output is 5V, I decided to bypass the tobi power input.
Removed L11, FB2, C32, and C39.
Applying 5V output of Murata regulator to Tobi's V_BATT_5 directly.
Therefore, I'm able to use 7-36V source to feed all the board.
There seems no problem electrically since V_BATT_5 is 5V, then all other
voltages such as 3.3V and 1.8V are being successfully generated.

Gumstix boots with no problem except a message about the Caspa camera.

[  OK  ] Started Network Service.
[   15.618133] omap3isp supply VDD_CSIPHY1 not found, using dummy regulator
[   15.721038] cfg80211: Calling CRDA to update world regulatory domain
[  OK  ] Started Login Service.
         Starting Serial Getty on ttyGS0...
[  OK  ] Started Serial Getty on ttyGS0.
[   15.856567] omap3isp supply VDD_CSIPHY2 not found, using dummy regulator
         Starting LXDE Display Manager...
[  OK  ] Started LXDE Display Manager.
[   15.979644] omap3isp omap3isp: Revision 15.0 found
[   15.984863] omap-iommu omap-iommu.0: isp: version 1.1
[  OK  ] Found device /dev/ttyO2.
         Starting Serial Getty on ttyO2...
[   16.118133] libertas_sdio: Libertas SDIO driver
[  OK  ] Started Serial Getty on ttyO2.
[  OK  ] Reached target Login Prompts.
[   16.242980] libertas_sdio: Copyright Pierre Ossman
[   16.380187] mt9v032 3-005c: Probing MT9V032 at address 0x5c
[  OK  ] Reached target Sound Card.
[   16.824493] omapdss OVERLAY error: check_overlay: paddr cannot be 0
[   16.847839] omapdss OVERLAY error: check_overlay: paddr cannot be 0
[   16.871063] omapfb omapfb: setup_plane failed
[   17.494140] omap_i2c omap_i2c.3: controller timed out
[   17.628967] mt9v032 3-005c: MT9V032 power up failed
[   17.822357] isp_register_subdev_group: Unable to register subdev mt9v032
[   20.562194] libertas_sdio mmc1:0001:1: (unregistered net_device):
00:19:88:18:3c:4a, fw 9.70.20p0, cap 0x00000303
[   20.601501] libertas_sdio mmc1:0001:1: wlan0: Marvell WLAN 802.11 adapter
[  OK  ] Found device /sys/subsystem/net/devices/wlan0.

When it comes to "Probing MT9V032 at address 0x5c" line, Caspa LED turns on
constantly.
Gumstix boots to login successfully, though. I can login and use it
flawlesly except the camera.
I suspect there is a problem with the power supply since it says "supply
not found".
But it's strange because all the suplly voltages are being generated.
May there be a problem with the COMMON_SHIELD because the varistors are not
connected to the input source anymore?

Thanks in advance,

Tarik

___________________________________

Aydın Tarık Zengin, Ph.D.