i.MX ProcessorsのトピックRe: MX53 Multiple CSI Support in Linux?

MX53 Multiple CSI Support in Linux?

CraigPetku — Tue, 04 Oct 2011 16:30:02 GMT

Just ran across this comment from FSL in mxc_v4l2_capture.c (init_camera_structure) cam->csi = 0; /* Need to determine how to set this correctly with * multiple video input devices. */ It's causing me trouble since it implies FSL only supports v4l on CSI0 in the 10.2 Android release. Looks like Sabre & EVK may also confirm this since. Comments?

Re: MX53 Multiple CSI Support in Linux?

CraigPetku — Fri, 28 Oct 2011 00:21:50 GMT

So a solution for automatically switching between CSI ports in a system with two cameras is really quite simple. In the case of the ADV7180, add an int csi; in the platform definition then store the .csi parameter into a static var during the probe function of the sensor driver. Modify your second camera (e.g., ov3640) to store the csi parameter in the field already in it's ov3640_data structure.

Next add and ioctl_g_ext_ctrl function to both sensors and define it in the appropriate .h files (e.g., ./include/media/v4l2-int-device.h)

Modify the kconfig file in the .drivers/media/video/mxc/capture directory to allow selecting two sensors both as modules, Update the platform data for each and place a call to the g_ext_ctrl function in mxc_v4l_open to get the csi number. Update all of the places in the FSL code where the nasty hard coded parameters are and when your done the mxc_capture file will work the way it should have out of the factory (allow selecting the CSI number for each sensor in the platform data in the ./arch/arm/mach-mx5/mx53-XXX.c file.

Now if only I could get multiple cameras working at the same time, The first challenge is to get rid of the hard coding of dma channels and interrupts in csi-enc.c as well as some other oversights.

Re: MX53 Multiple CSI Support in Linux?

PlartiNuhtl — Wed, 16 Nov 2011 14:43:52 GMT

@Craig:

Can you post your patch?

Re: MX53 Multiple CSI Support in Linux?

YiayitKarabulut — Mon, 27 Feb 2012 08:25:04 GMT

Hi Craig, I am really interest in CSI1, Could you post your patch please?

Re: MX53 Multiple CSI Support in Linux?

HenriBragge — Thu, 30 Aug 2012 13:07:28 GMT

Any updates about getting two cameras working at the same time? Is it possible?

Re: MX53 Multiple CSI Support in Linux?

zhaozhao — Mon, 04 Mar 2013 06:31:33 GMT

Anyone solved this ?

Where can I got help on this ? i need mutiple CSI support in linux on MX51.

Thanks in advance

Re: MX53 Multiple CSI Support in Linux?

MarekVasut — Mon, 04 Mar 2013 16:12:25 GMT

Maybe, check ENGcm08316 as it is imperative to get both CSI working. I will try to release patches eventually.

Re: MX53 Multiple CSI Support in Linux?

zhaozhao — Tue, 05 Mar 2013 05:22:48 GMT

Thank you !

Could you tell me what i should do if I want to use the CSI2 on MX51 ?

I cannot make the CSI2 work normal , the set of CSI2 is almost the same as CSI1 now

Re: MX53 Multiple CSI Support in Linux?

RobbieJiang — Thu, 07 Mar 2013 16:09:17 GMT

One of my colleagues has the same problem.

Actually, I'm a little disappointed by FreeScale because such a big problem/bug is not fixed even in the latest BSP release. And even there is no any explicit declaration about it.

Has anybody fixed the problem of supporting two cameras simultaneously?

Re: MX53 Multiple CSI Support in Linux?

joanxie — Thu, 28 Nov 2013 09:40:09 GMT

Our BSP and demo codes only sets by-pass settings for CSI1 for some reason, here is what we usually have:

- reg32setbit(MIPI_HSC_BASE_ADDR+0x800,16);

- reg32setbit(MIPI_HSC_BASE_ADDR+HSC_MCD_OFFSET,10);

Now we need the following register settings to by-pass both CSI1 and CSI2

reg32_write(MIPI_HSC_BASE_ADDR+HSC_MCD_OFFSET, 0x00000F00); // @ECA

reg32_write(MIPI_HSC_BASE_ADDR+MCG_MCCMC_OFFSET, 0x0000000C); // @ECA

reg32_write(MIPI_HSC_BASE_ADDR+MXT_CONF_OFFSET, 0xF003008B); // @ECA

Re: MX53 Multiple CSI Support in Linux?

cyrilcrocquesel — Tue, 03 Dec 2013 13:59:59 GMT

Hi,

Is there any news about multi CSI support ?

I'm working on this problem. But if since there some patch to allow multi CSI I will be pleased.

Cordially

Cyril

Re: MX53 Multiple CSI Support in Linux?

paulhottell — Mon, 24 Feb 2014 18:59:31 GMT

Hello,

Has anyone had any luck finding a patch for multiple CSI support? I am currently trying to get this functionality working myself. I've seen several threads talking about it, but haven't seen any patches posted.

Any assistance would be greatly appreciated!

Regards,

Paul

Re: Re: MX53 Multiple CSI Support in Linux?

MarekVasut — Fri, 28 Feb 2014 14:54:16 GMT

The attached hack might give you an idea ...

Re: MX53 Multiple CSI Support in Linux?

paulhottell — Tue, 11 Mar 2014 20:22:01 GMT

Thanks!