topic Re: Re: UART configuration Setting in i.MX Processors

UART configuration Setting

deepanrajanbara — Wed, 03 Sep 2014 06:06:28 GMT

Hi,

Actually i am new to Linux kernel and u-boot.Ours is a custom board based on i.Mx6 and there is need for configuring UART (1,2,3,4) but i am not sure how to configure all the UART ports for our custom board .so Can anyone help me configuring the UART for the Linux Kernel .

Thank you,

Deepanraj.A

Re: UART configuration Setting

pt — Wed, 03 Sep 2014 07:52:34 GMT

Did you build linux image? I am working on imx28. In that, to configure auart you can edit "mx28evk_pins.c" file in this location <ltib-dir>/rpm/BUILD/linux-2.6.35.3/arch/arm/mach-mx28 .

Re: UART configuration Setting

deepanrajanbara — Wed, 03 Sep 2014 08:09:47 GMT

But i am working on imx6 platform there is no such similar file to configure UART

Re: UART configuration Setting

pt — Wed, 03 Sep 2014 08:59:11 GMT

Use grep command to search "uart". It will list all files which have the word "uart".

If you know the name of the file , you can use find command to search that file.

grep -r "uart"

Regards

Parvathy

Re: UART configuration Setting

igorpadykov — Wed, 03 Sep 2014 09:33:22 GMT

Hi Deepanraj

you can check Chapter 3 "Registering a New UART Driver"

i.MX_6Dual6Quad_BSP_Porting_Guide.pdf included in

L3.0.35_4.1.0_LINUX_DOCS

Best regards

chip

Re: UART configuration Setting

deepanrajanbara — Wed, 03 Sep 2014 09:43:19 GMT

Thankyou

Re: UART configuration Setting

Rita_Wang — Wed, 03 Sep 2014 09:46:16 GMT

Hi Deepanraj.A,

Here I give you a document Debug UART Customization on i.MX6x.ppt which you can refer to configure the uart. Hope this can help you.
Have a great day,
Dan

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: UART configuration Setting

deepanrajanbara — Wed, 03 Sep 2014 10:11:09 GMT

I have not received the Debug UART Customization on i.MX6x.ppt .

Re: UART configuration Setting

Rita_Wang — Thu, 04 Sep 2014 01:02:56 GMT

Hi Deepanraj.A,

I have attached it in my last reply to you. And I can see it now really in the reply. You can have a check. You'd better go to the thread link to see it, not in inbox. The thread link is https://community.freescale.com/thread/329949, if you still can not find it, tell me easily. I will attached it for you again.
Have a great day,
Dan

Re: UART configuration Setting

Rita_Wang — Thu, 04 Sep 2014 08:14:37 GMT

Have you received Debug UART Customization on i.MX6x.ppt by now? If not, contact me.

Have a great day
Dan

Re: UART configuration Setting

deepanrajanbara — Thu, 04 Sep 2014 08:31:53 GMT

Thank you i have received the Document

Re: UART configuration Setting

Rita_Wang — Fri, 05 Sep 2014 01:17:39 GMT

Hi Deepanraj.A,

Hope it can help you. If you have solved the problem, would you please close this thread by clicking the Correct Answer button. Many thanks.

Have a nice day

Dan

Re: UART configuration Setting

deepanrajanbara — Fri, 05 Sep 2014 04:10:49 GMT

But Actually i wanted to configure my serial UART3 in the speed of 4000000 so not the debug UART.Debug UART useing it as it is.So is there any way to configure other usart at speed of 4000000.

Re: UART configuration Setting

Rita_Wang — Fri, 05 Sep 2014 06:30:21 GMT

Hi Deepanraj.A,

Which board and BSP are you using?

Have a nice day

Dan

Re: UART configuration Setting

deepanrajanbara — Fri, 05 Sep 2014 06:45:09 GMT

board is imx6 sbc and BSP is Linux L3.0.35_4.1.0_130816

Re: Re: UART configuration Setting

Rita_Wang — Fri, 05 Sep 2014 07:08:50 GMT

Hi Deepanraj.A,

About the configure of uart you can refer to document i.MX_6Dual6Quad_Linux_Reference_Manual.pdf. You can see the source code under directory <ltib_dir>/rpm/BUILD/linux/drivers/tty/serial. Details are in this document. Hope this can help you.
Have a great day,
Dan

Re: Re: UART configuration Setting

deepanrajanbara — Fri, 05 Sep 2014 08:07:07 GMT

Hi,

But actually in that reference manual they have not mentioned about baudrate we are configureing for other UART

Thankyou

Deepanraj

Re: Re: UART configuration Setting

Rita_Wang — Fri, 05 Sep 2014 08:59:09 GMT

Hi Deepanraj,

You can go to the directory <ltib_dir>/rpm/BUILD/linux/drivers/tty/serial in your BSP source code, you can see the file imx.c, there are configurations for UART.

Have a great day,

Dan

Re: UART configuration Setting

deepanrajanbara — Mon, 08 Sep 2014 05:24:24 GMT

Actually i have checked in that where it is getting configure in serial_core.c but when i set baudrate to 115200 from 9600 it doen't work

Thank you

Re: UART configuration Setting

deepanrajanbara — Mon, 08 Sep 2014 09:41:57 GMT

Hi,

The Problem which i am facing now is that i am not able to test my UART which is running at a speed of 4Mbps.

Thank you,

Deepanraj