PROCESSOR-SDK-AM62X: UART

Cyra -

Intellectual 310 points

Part Number: PROCESSOR-SDK-AM62X

Hi,

May i know how to configure uart5 speed to 12Mbps?

SDK version: ti-processor-sdk-linux-am62xx-evm-08.04.01.09

Thanks.

over 2 years ago

0 Bin Liu over 2 years ago

TI__Guru**** 167151 points

HI Cyra,

Where did you get the information that AM62x UART supports 12Mbps?

The TRM states the baud rate is up to 3.6Mbps.

0 Cyra - over 2 years ago in reply to Bin Liu

Intellectual 310 points

Oh i see,

is it the same for all the uart for am62x?

0 Cyra - over 2 years ago in reply to Bin Liu

Intellectual 310 points

The max i can set seems to be 3.5 instead of 3.6. May i know why? or is there any other way to set it to higher than that?

+1 Bin Liu over 2 years ago in reply to Cyra -

TI__Guru**** 167151 points

Hi Cyra,

Yes, all uart support up to 3.6Mbps.

3.6Mbps is not a standard baud rate, so you cannot directly set it with stty. You would have to use custom_divisor in kernel ioctl TIOCSSERIAL. Please see function set_baud_divisor() linked below as an example.

https://github.com/cbrake/linux-serial-test/blob/master/linux-serial-test.c#L123

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PROCESSOR-SDK-AM62X: UART