RTOS/TDA2P-ACD: AR0220 Sensor Interfacing to Custom TDA2Px Board

Hi Brijesh,

We have done following code changes,

{SENSOR_AR0220,

       {

4u, /* I2C Instance id for the sensor */

{0x10}, /* I2C Address of the sensor */

{0x10}, /* I2C Address of the serializer (As there is no SER, giving the address of sensor) */

FALSE, /* Flag for single/multi channel sensor config */

SYSTEM_VIFW_4LANES, /* Interface width */

SYSTEM_VIFM_SCH_CSI2, /* Video Interface mode - Single channel capture via CSI2 interface */

          SYSTEM_CSI2_RAW12, /* Input CSI2 Data Format */

0, /* Virtual Channel Id */

          0, /* Is CSI Enable Required in UB954 */

           {TRUE /* isCplxCfgValid */,

                {{FALSE, 1}, /* Clock Lane */

                    {FALSE, 2}, /* data1Lane */

                    {FALSE, 3}, /* data2Lane */

                    {FALSE, 4}, /* data3Lane*/

                    {FALSE, 5}},/* data4Lane */

          400 /* csi2PhyClk */ },

FVID2_VID_SENSOR_AR0220_DRV,  /* sensorDrvId */
FALSE,     /* sensorBroadcast */
FALSE    /* enableFsin */

}

}

In our schematic the lane ordering is as shown below. Please confirm we are doing correct changes in the code,

Regards,

Abhay

Hi Brijesh,

This is the connector from which data lanes are connected between the TDA2P and AR0220 sensor,

Pins 1 & 3 are clock lines. Can you please verify if clock lanes and polarity is fine. This looks OK to me.

Regards,

Abhay

Hi Brijesh,

We referred to the post

WE checked CAL_CSI2_COMPLEXIO_CFG_l[29] register . Here RESET_DONE was set to 0. But for normal operation it should be 1 as mentioned in the TRM. Screenshot of TRM reference is attached.

When we had connected a SERDES  this bit was 1,and we could see data from the sensor.

After removing SERDES,is there any configuration left to be done. Can we doubt sensor configuration as it was already running with SERDES Connected.

Also we read the REG0 (0x489B 0800) = 0x0000082E...(the default value of which is 4 for 400 MHz).

Regards,

Abhay

Hi Sujith,

If we connect UB954-EVM on TDA2P-EVM, the CSI2 clock lanes are on bottom of UB954-EVM and are not visible so its difficult to probe.

Do you have any other suggestion for us.

Regards,

Abhay

Please look at the array gSensorInterfaceInfo in the file iss_sensor_tda2px.c. For every sensor, there is a field csi2PhyClk. Please try changing it as recommended in the previous post.

Hi Sujith,

We probed the data lanes of the working setup of AR0220 + SERDES on TDA2Px-EVM. Screenshot is attached. We probed on the single data lanes only as we do not have differential probes.

We did not get similar waveforms on the data lanes on custom board. We observed that we are not getting driver callback in the CaptureISS example.

Hi Mayank,

We have already tried different combinations of CSI2 clock in "gSensorInterfaceInfo", but we are not getting any output.

Regards,

Abhay