i.MX ProcessorsのトピックRe: V4L2 driver with UART Communication

V4L2 driver with UART Communication

mcergun — Tue, 16 Aug 2016 17:00:29 GMT

I am trying to develop a camera driver for a camera that communicates on UART. The board I am using is a quad plus sabre smart devices. I have some questions about it.

Is there any abstracted UART drivers that I can use in kernel space, like I2C has?

Does IPU truly support UART fuction?

Can I use UART on CSI0_DAT8, CSI0_DAT9 (dedicated to I2C originally) pins?

Is there any way that I can move my application to user space while still using V4L2?

EDIT: I must have mistyped 2 pins in my last question. I changed them now.

Re: V4L2 driver with UART Communication

igorpadykov — Tue, 16 Aug 2016 23:55:46 GMT

Hi mert

uart supports standard linux TTY layer IOCTL calls as described

in attached Linyx Manual Chapter 45.

IPU does not support UART fuction, CSI0_DAT10, CSI0_DAT11 pins

(if there is possibility to mux on uart, please check RM) could be used

for uart purposes.

Best regards

igor

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Re: V4L2 driver with UART Communication

mcergun — Wed, 17 Aug 2016 06:22:07 GMT

thank you for the quick reply igor,

is mux possibility strictly defined in application processor reference manual iomuxctl lists, or can it be defined by user, too?

I mistyped two pins in my original question. Now I have updated them. Can you recheck my question please?

Re: V4L2 driver with UART Communication

igorpadykov — Wed, 17 Aug 2016 10:15:23 GMT

yes, mux possibility strictly defined in application processor reference manual

Best regards

igor