[meta-freescale] Changing the IMX6 UART clock speed?

Alagarsamy, Siva siva.alagarsamy at thermofisher.com
Thu Sep 19 18:43:02 PDT 2013


I need to talk to a serial device that talks at a 1041667 baud rate.  With a 50MHz clock, the base baud rate will be 3125000 and with custom divisor of 3, I can get 1041667 baud rate.
I will post this question to freescale imx community.
Thanks,
Siva
________________________________________
From: Fabio Estevam [festevam at gmail.com]
Sent: Thursday, September 19, 2013 9:31 PM
To: Alagarsamy, Siva
Cc: meta-freescale at yoctoproject.org
Subject: Re: [meta-freescale] Changing the IMX6 UART clock speed?

On Thu, Sep 19, 2013 at 8:48 PM, Alagarsamy, Siva
<siva.alagarsamy at thermofisher.com> wrote:
> Hi,
>  I need a change the UART clock speed in IMX6 to 50MHz from the current 80MHz.  I understand there is a main clock that drives all  subsystem clocks.
> How do I change the main clock to get the 50MHz clock for the UART.  Is this something I can change in the u-boot or kernel configuration or is it something in the kernel code that I have to change?

What is your end goal? Which baud rate would you like to achieve?

Actually this question is not related to meta-fsl-arm, so it would be
better if you post it at:
https://community.freescale.com/community/imx



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