AM5728: Porting a new Camera device (OV5640) on LINUX PSDK 6.02

Devashish Tiwari

Part Number: AM5728
Other Parts Discussed in Thread: TMDSEVM572X,

Hello,

I have an AM572x Evaluation Module TMDSEVM572X with me. I am currently using Linux PSDK 6.02 on my AM5728 EVM.

I also have a TI Camera Module (TMDSCM572X AM57XX Camera Board REV A1). This Camera works completely fine on my EVM. I can see from kernel prints that this camera uses Omni Vision's sensor OV10635.

root@am57xx-evm:~# dmesg | grep ov1063 
[    1.689018] gpio-clk clk_ov10635: GPIO lookup for consumer enable
[    1.689025] gpio-clk clk_ov10635: using device tree for GPIO lookup
[    1.689052] of_get_named_gpiod_flags: parsed 'enable-gpios' property of node '/clk_ov10635[0]' - status (0)
[    7.722944] of_get_named_gpiod_flags: can't parse 'mux-gpios' property of node '/ocp/i2c@4807c000/ov10635@30[0]'
[    7.722971] ov1063x 4-0030: GPIO lookup for consumer reset
[    7.722977] ov1063x 4-0030: using device tree for GPIO lookup
[    7.722999] of_get_named_gpiod_flags: parsed 'reset-gpios' property of node '/ocp/i2c@4807c000/ov10635@30[0]' - status (0)
[    7.723044] ov1063x 4-0030: GPIO lookup for consumer powerdown
[    7.723050] ov1063x 4-0030: using device tree for GPIO lookup
[    7.723069] of_get_named_gpiod_flags: parsed 'powerdown-gpios' property of node '/ocp/i2c@4807c000/ov10635@30[0]' - status (0)
[    8.143619] ov1063x 4-0030: ov1063x Product ID a6 Manufacturer ID 35
[    8.159004] ov1063x 4-0030: ov1063x 4-0030 sensor driver registered !!
[    9.247479] vin3a: Port A: Using subdev ov1063x 4-0030 for capture

Also,

root@am57xx-evm:~# lsmod | grep ov1063
ov1063x                24576  1

However, I would like to use a new Camera with OV5640 sensor on AM5728 EVM. The source file concerned with the new sensor (ov5640.c) is present in my kernel directory. ov5640.ko is also generated when I compile my kernel directory.

I know there are some changes required in .its file related to AM5728 EVM to port the new camera. Can you please guide me through the series of changes (related to dts/dtso/its/fdts etc.) that would be required to make the new camera work on the EVM?

Thanks,

Devashish

over 5 years ago

0 Nikhil Devshatwar over 5 years ago

TI__Genius 9905 points

Hi Devashish,

Please refer to this app note https://www.ti.com/lit/an/spracd8/spracd8.pdf

"Integrating New Cameras With Video Input Port on DRA7xx SoCs"

This will be helpful for AM57x as well.

Regards,

Nikhil D

0 Devashish Tiwari over 5 years ago in reply to Nikhil Devshatwar

Expert 1435 points

Hi Nikhil

Thank you for a quick response. I'll go through this manual.

Meanwhile, please don't lock this thread, so that I can post about issues I might get while integrating.

Thanks,

Devashish

0 Devashish Tiwari over 5 years ago in reply to Devashish Tiwari

Expert 1435 points

Hello,

I was going through the camera integration manual and also explored AM572X Sitara Processor Technical Reference Manual (Rev. J) for more details regarding Video Input Port(s).

Is VIP a physical module or a logical concept restricted only to DRA7xx SoCs? Also, what is the significance of VPE, VPDMA wrt VIP?

Please explain.

Regards,

Devashish

0 Nikhil Devshatwar over 5 years ago in reply to Devashish Tiwari

TI__Genius 9905 points

Hi Devashish,

VIP is the physical hardware present in the SoC which acts as the VIdeo Input Port. Its a parallel port digital signals where you can connect your own camera / video source like HDMI, etc

VPE is another hardware accelerator which can do some operations like scaling, colospace conversion, deinterlacing, etc

Both of these hardware uses a DMA block which is responsible for Direct memory read/writes, that's called VPDMA

Regards,

Nikhil D

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AM5728: Porting a new Camera device (OV5640) on LINUX PSDK 6.02