[beagleboard] Re: Beaglebone AI UART access

Hi ahni, Thanks a lot for this info, I will try This out & see if UART3 Works. On Thursday, April 23, 2020 at 7:53:18 AM UTC+5:30, ahni...@gmail.com wrote: > > > I hope it is helpful for uart3 /dev/ttyS2 device tree implementation. > > Uart3 RX starts working after the mode update to > >

Re: [beagleboard] Re: Beaglebone AI UART access

Hello Jason, Thank you for update. Could you inform how to use provided dts files on https://elinux.org/Beagleboard:BeagleBone_cape_interface_spec ?

Re: [beagleboard] Re: Beaglebone AI UART access

Thanks for all your shared work. The plan for the Fall release (based on GSoC work on-going this summer, if approved, or this might be delayed) is to modify the base device trees and set of overlays to provide at common set of overlays to load for Black/AI. Then, symlinks would be provided that

[beagleboard] Re: Beaglebone AI UART access

I hope it is helpful for uart3 /dev/ttyS2 device tree implementation. Uart3 RX starts working after the mode update to PIN_INPUT_PULLUP | MUX_MODE1 // P9.22b uart3_rxd Mode is confirmed as the following: P9.22b 240 fast rx up 1 uart 2 rxd serial@4802 (uart3) pin 240

[beagleboard] Re: Beaglebone AI UART access

I would like to share information. How to find the map between uart* and ttyS* Ocp is on-chip peripheral. Uart 3 physical address is 0x4802 (TI manual). So the mapping address is matched to /tty/ttyS2 (it is actually linked to ttyO2. Please Refer to the below command ) Uart 5

[beagleboard] Re: Beaglebone AI UART access

I finally found the solution by changing the device tree about uart3 tx. P9.21 uar3 rx P9.22 Verified mode change from 14 to mode 1. it is working as /dev/ttyS2 pin 241 (PIN241) 4a0037c4 0001 pinctrl-single pin 240

[beagleboard] Re: Beaglebone AI UART access

want to add pin status sudo cat ./debug/pinctrl/4a003400.pinmux/pins I put mode 4 on *.dts file but the value looks like 0c instead 04. ... pin 203 (PIN203) 4a00372c 000c pinctrl-single pin 204 (PIN204) 4a003730 000c pinctrl-singl ... And also I used to config-pin and got the