Hello Jason, Thank you for update. Could you inform how to use provided dts files on https://elinux.org/Beagleboard:BeagleBone_cape_interface_spec <https://www.google.com/url?q=https%3A%2F%2Felinux.org%2FBeagleboard%3ABeagleBone_cape_interface_spec&sa=D&sntz=1&usg=AFQjCNGe8fl029Q4RPSq5VUXryDjbak-nw> ? Are their *.dtb files already compiled/copied on /boot/dtbs ?
I used to compile dts file to dtb file and copied it to /boot/dtbs/. Thank you so much! On Thursday, April 23, 2020 at 10:12:01 AM UTC-6, Jason Kridner wrote: > > 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 map to UARTs on specific header pins. > > See https://elinux.org/Beagleboard:BeagleBone_cape_interface_spec > <https://www.google.com/url?q=https%3A%2F%2Felinux.org%2FBeagleboard%3ABeagleBone_cape_interface_spec&sa=D&sntz=1&usg=AFQjCNGe8fl029Q4RPSq5VUXryDjbak-nw> > for > work-in-progress. > > On Wed, Apr 22, 2020 at 10:22 PM <ahni...@gmail.com <javascript:>> wrote: > >> >> 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@48020000 (uart3) >> >> pin 240 (PIN240) 4a0037c0 00060001 pinctrl-single ( instead of 00000001) >> >> >> >> UART3 TX was working without any pull up or pull down. >> >> P9_21, MUX_MODE1 ) // P9.21 uart3_txd >> >> pin 241 (PIN241) 4a0037c4 00000001 pinctrl-single >> >> >> >> To activate uart3, please add the following code into *.dts file and >> compile to *.dtb. >> >> Also please modify the am572*ai.dts file by deactivating the shared pins. >> >> >> &uart3 { >> >> status = "okay"; >> >> pinctrl-names = "default"; >> >> pinctrl-0 = <&uart3_pins>; >> >> }; >> >> &dra7_pmx_core { >> >> uart3_pins: uart3 { >> >> pinctrl-single,pins = < >> >> DRA7XX_CORE_IOPAD( P9_21, MUX_MODE1 ) // P9.21 uart3_txd >> >> DRA7XX_CORE_IOPAD( P9_22b, PIN_INPUT_PULLUP | MUX_MODE1) // P9.22b >> uart3_rxd >> >> DRA7XX_CORE_IOPAD( P9_22a, MUX_MODE15) // P9.22a driver_off >> //shared-pin >> >> >; >> >> }; >> >> >> >> }; >> >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to beagl...@googlegroups.com <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/c77fd7a6-4177-4a4c-9f20-cca67e254fb5%40googlegroups.com >> >> <https://groups.google.com/d/msgid/beagleboard/c77fd7a6-4177-4a4c-9f20-cca67e254fb5%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > https://beagleboard.org/about - a 501c3 non-profit educating around open > hardware computing > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/306ff701-6a7e-45a0-8e57-5e18bf029d76o%40googlegroups.com.
