omap zoom lpd board clk init problem when booting "Clock cam_ick didn't enable in 100000 tries"

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Hi:
When board reboot, driver tried to reset camera, there is error:
kernel version is v2.6.26-ti-07252008. Does anyone see it before?
console [ttyS2] enabled
brd: module loaded
loop: module loaded
eth0: LAN9211 (rev 0) at 0xc8908000 IRQ 312
eth0: Ethernet addr: 00:08:ee:02:53:22
eth0: LAN911x Internal PHY
Linux video capture interface: v2.00
omap24xxvout: registered device video1 [v4l2]
omap24xxvout: registered device video2 [v4l2]
Clock cam_ick didn't enable in 100000 tries
Clock cam_mclk didn't enable in 100000 tries
isp_af_init
I have tried to open /dev/video/0, but there is no such device.
and I add some debug info in isp_get call, and found that content of
register cm_fclken_cam is 03, and content of cm_icklen_cam is 0,but
cm_idlest_cam is 0x1, so clk init failed. For the kernel option I have choiced:
[*] Enable advanced debug functionality │ │ │ │ [*] Autoselect pertinent encoders/decoders and other helper chips │ │ │ │ < > Virtual Video Driver │ │ │ │ < > SAA5246A, SAA5281 Teletext processor │ │ │ │ < > SAA5249 Teletext processor │ │ │ │ OMAP2/OMAP3 V4L2 drivers ---> │ │ │ │ <*> OMAP 3 Camera support │ │ │ │ <*> OMAP ISP Driver │ │ │ │ <*> omap isp previewer │ │ │ │ <*> omap isp resizer │ │ │ │ < > OMAP 2 Camera support (EXPERIMENTAL) │ │ │ │ [ ] V4L USB devices ---> │ │ │ │ < > SoC camera support



even there is some clk error report, but isp_get return successfully.
1. why there  is no such device?
2. do you know the sensor name of sensor module? and datasheet?
3. what's the interface used by ldp board to connect sensor? serial or parallel port?

Any suggestion will be appreciated.

B.R
Tao

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