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Tool/software:
Hi Ti experts:
On our custom boards , SoC is TDA4VEN . There are three deserializers connect to SoC's capture inst0, inst1,inst2.
In this link , I met the ``UDMA open failed `` error when I try to use capture instance 2.
And , TI experts told me that , add the following code to `app_csi.c` . After that , No error shows in Drivers. Sadly after running multi_cam demo , It still stuck at dequeue.
To find out why , I done some tests :
Firstly : using csirx test case provided under mcu_plus_sdk_j722s_09_02_00_41/examples/drivers/csirx/csirx_capture_testapp/j722s-evm/main-r5fss0-0_freertos/csirx_capture_test_main.c
I modified the code to support openning three capture instance simultaneously,
I only connected one camera to one capture instance once a time. And tested three times.
result is :
From the csirx test case , I assume that driver of third capture instance work properly.
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1. CRC , ECC error existing in drivers is normal ?
2. Where else should TIOVX code be changed to support the third instance ?
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BR
stream
Hi :
Secondly , I try to read the csirx regsters to compare the status between stuck after running multi cam demo and csirx test case running well
- read 0x30141048 whether stuck or running ,value changes which means that Dphy rx is working .
- read 0x30141104
when running :
when stuck : value is 0x00000111, and does not change .
From this block diagram , I learn that : when stuck , stream0 seems not working , So , no data come to memory.
I hope it will help.
It's urgent, looking forwards to your help.
BR
stream
Hi Nikhil :
Thank you for reply.
When I running pdk driver test case, I looked into DPHY lane control and status register , [ 0x30151000 ] ,it kept changing when I kept reading , it means that PHY receiver detects the hs clk signals as i understand.
But when I use the tiovx demo , the register 0x30151000 kept unchanged in 0x44D30000, which indicate that DPHY in common completed but not receive hs clk signal . That make me confused.
By the way , firstly the camera configuration is the same between driver test case and TIOVX demo.
Secondly , In tiovx demo , I also enable the three capture instances at the same time by the following modification in app_capture_module.c
I hope it will help
BR
stream
