sensors, raw12, has mipi signal in the output of Deserializer, but can't be captured by tda4, Deserializer 96722 Serializer 96705

lizhixiang

Hi！ TI's experts!

We can't make the 0147 sensors work in tda4!

There are 4 same cameras, without isp, 1280*960 25fps raw12, in this module. The Serializer in camera is Max 96705. The Deserializer connected tda4's csi_rx_1 is Max 96722. It uses the capture1 of tda4 by setting in the capture module. We set tda4's csi_laneBandSpeed =CSIRX_LANE_BAND_SPEED_560_TO_640_MBPS, 96722 phy speed set at 0.6G/lane.

Now, we can see the mipi signal, as the following figure, in output of 96722, but we can't make sure the corrcet of signal, because we don't have enough professional oscilloscope.

Additional, we see some registers' values about CSI_RX_IF Interrupt Events and compare them with another camera module, which can streamOn ok. The values of registers in two camera modules ara same.

Here, CSI_RX_IF_VBUS2APB_ERROR_IRQS is 0x0, CSI_RX_IF_VBUS2APB_ERROR_IRQS_MASK_CFG is 0x0xf03b1.

Accept your help!

Thanks!

over 2 years ago

0 Brijesh Jadav over 2 years ago

TI__Guru**** 432715 points

Hi,

Can you please check if your sensor and deserializer output is enabled only in streamon callback and make sure it not enabled before streamon callback?

Regards,

Brijesh

0 lizhixiang over 2 years ago in reply to Brijesh Jadav

Prodigy 135 points

4 links are disable before streamon! We can't see any mipi signal before streamon.

0 Brijesh Jadav over 2 years ago in reply to lizhixiang

TI__Guru**** 432715 points

Hi,

ok, can you please check if

- number of lanes

- lane speed

- lane ordering

etc are correctly configured in the CSIRX/Imaging driver?

Regards,

Brijesh

0 lizhixiang over 2 years ago in reply to Brijesh Jadav

Prodigy 135 points

Thanks you !

Can you help me list all the configutations needed to be verificated?

number of lanes, lane speed and lane ordering are correct.

Regards,

Zhixiang Lee

0 Brijesh Jadav over 2 years ago in reply to lizhixiang

TI__Guru**** 432715 points

Hi,

Which example application are you using?

You mentioned that you have connected deseriziler to CSI instance1, have you enabled this instance in the application correctly?

Apart from above configuration, we need to make sure that the sensor and deserizlier output is started only in streamon callback and not before it. You might keep the clock output running before streamon callback, but not the data, so can you please make sure of it?

Regards,

Brijesh

0 lizhixiang over 2 years ago in reply to Brijesh Jadav

Prodigy 135 points

Hi, thanks,

We use the app_multi_cam demo.

We enable different CSI instanecs, as following codes.

As the following content, the bit 1 control the csi_out_en. We just set it to 1 when steamon callback is called. On the other time ,it is 0 all time .