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SK-AM62B-P1: Enabling UART5 from devicetree

Fnu Premsagar
Prodigy 220 points

Part Number: SK-AM62B-P1

Tool/software:

I have am62b-p1 starter kit EVM, and I have flashed Debian Linux in it—the 10.01.10.04 version. I wanted to use uart5 (available in J3 connector) for my project and am trying to enable it, but it didn't work. I have boot/dtb/ti/k3-am62-lp-sk.dtb; converted it to .dts files and made changes as below, and have rebooted the board. Still, it didn't work. Can someone point me where it went wrong? Thank you in advance.

pinctrl@f4000 {
bootph-all;
compatible = "ti,am654-padconf", "pinctrl-single";
reg = <0x00 0xf4000 0x00 0x2ac>;
#pinctrl-cells = <0x01>;
pinctrl-single,register-width = <0x20>;
pinctrl-single,function-mask = <0xffffffff>;
interrupts = <0x00 0x62 0x04>;
interrupt-controller;
#interrupt-cells = <0x01>;
phandle = <0x1a>;

main-uart0-default-pins {
bootph-all;
pinctrl-single,pins = <0x1c8 0x50000 0x1cc 0x10000>;
phandle = <0x19>;
};

main-uart1-default-pins {
bootph-pre-ram;
pinctrl-single,pins = <0x194 0x50002 0x198 0x10002 0x1ac 0x50002 0x1b0 0x10002>;
phandle = <0x1b>;
};

main-uart5-default-pins {
bootph-all;
pinctrl-single,pins = <0x01e4 0x50000 0x01e8 0x10000>;
phandle = <0xdf>;
};

...
serial@2800000 {
compatible = "ti,am64-uart", "ti,am654-uart";
reg = <0x00 0x2800000 0x00 0x100>;
interrupts = <0x00 0xb2 0x04>;
power-domains = <0x02 0x92 0x01>;
clocks = <0x03 0x92 0x00>;
clock-names = "fclk";
status = "okay";
bootph-all;
pinctrl-names = "default";
pinctrl-0 = <0x19>;
interrupts-extended = <0x01 0x00 0xb2 0x04 0x1a 0x1c8>;
interrupt-names = "irq", "wakeup";
phandle = <0x7d>;
};

serial@2810000 {
compatible = "ti,am64-uart", "ti,am654-uart";
reg = <0x00 0x2810000 0x00 0x100>;
interrupts = <0x00 0xb3 0x04>;
power-domains = <0x02 0x98 0x01>;
clocks = <0x03 0x98 0x00>;
clock-names = "fclk";
status = "reserved";
bootph-pre-ram;
pinctrl-names = "default";
pinctrl-0 = <0x1b>;
phandle = <0x7e>;
};
serial@2850000 {
compatible = "ti,am64-uart", "ti,am654-uart";
reg = <0x00 0x2850000 0x00 0x100>;
interrupts = <0x00 0xb7 0x04>;
power-domains = <0x02 0x9c 0x01>;
clocks = <0x03 0x9c 0x00>;
clock-names = "fclk";
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <0xdf>;
phandle = <0x82>;
};
...
aliases {
serial2 = "/bus@f0000/serial@2800000";
serial5 = "/bus@f0000/serial@2850000";
mmc0 = "/bus@f0000/mmc@fa10000";
mmc1 = "/bus@f0000/mmc@fa00000";
mmc2 = "/bus@f0000/mmc@fa20000";
spi0 = "/bus@f0000/bus@fc00000/spi@fc40000";
ethernet0 = "/bus@f0000/ethernet@8000000/ethernet-ports/port@1";
ethernet1 = "/bus@f0000/ethernet@8000000/ethernet-ports/port@2";
usb0 = "/bus@f0000/dwc3-usb@f900000/usb@31000000";
usb1 = "/bus@f0000/dwc3-usb@f910000/usb@31100000";
};
...
__symbols__ {
main_uart0_pins_default = "/bus@f0000/pinctrl@f4000/main-uart0-default-pins";
main_uart1_pins_default = "/bus@f0000/pinctrl@f4000/main-uart1-default-pins";
main_uart5_pins_default = "/bus@f0000/pinctrl@f4000/main-uart5-default-pins";
main_uart0 = "/bus@f0000/serial@2800000";
main_uart1 = "/bus@f0000/serial@2810000";
main_uart2 = "/bus@f0000/serial@2820000";
main_uart3 = "/bus@f0000/serial@2830000";
main_uart4 = "/bus@f0000/serial@2840000";
main_uart5 = "/bus@f0000/serial@2850000";
main_uart6 = "/bus@f0000/serial@2860000";
...
  • 0
    TI__Guru**** 180956 points

    Hi Fnu,

    Fnu Premsagar said:
    I wanted to use uart5 (available in J3 connector) for my project

    Which exact pins on J3 do you use? I need to first check your pinmux.

    Fnu Premsagar said:
    I have boot/dtb/ti/k3-am62-lp-sk.dtb

    SK-AM62B-P1 EVM should use k3-am625-sk.dtb, not k3-am62-lp-sk.dtb. Likely doesn't matter for this UART5 enabling work, but just let you know.

  • 0
    TI__Guru**** 180956 points
    Fnu Premsagar said:
    Still, it didn't work.

    Please also explain what doesn't work. What do you see about UART5/ttyS5 in kernel boot log?

  • 0 in reply to Bin Liu
    Prodigy 220 points

    root@am62xx-evm:~# echo "hello" > /dev/ttyS5
    -bash: echo: write error: Input/output error
    root@am62xx-evm:~# ls -l /dev/ttyS*
    crw-rw---- 1 root dialout 4, 64 Jan 24 19:15 /dev/ttyS0
    crw-rw---- 1 root dialout 4, 65 Jan 24 19:15 /dev/ttyS1
    crw-rw---- 1 root dialout 4, 74 Jan 24 19:15 /dev/ttyS10
    crw-rw---- 1 root dialout 4, 75 Jan 24 19:15 /dev/ttyS11
    crw------- 1 root tty 4, 66 Jan 24 20:07 /dev/ttyS2
    crw-rw---- 1 root dialout 4, 67 Jan 24 19:15 /dev/ttyS3
    crw-rw---- 1 root dialout 4, 68 Jan 24 19:15 /dev/ttyS4
    crw-rw---- 1 root dialout 4, 69 Jan 24 19:15 /dev/ttyS5
    crw-rw---- 1 root dialout 4, 70 Jan 24 19:15 /dev/ttyS6
    crw-rw---- 1 root dialout 4, 71 Jan 24 19:15 /dev/ttyS7
    crw-rw---- 1 root dialout 4, 72 Jan 24 19:15 /dev/ttyS8
    crw-rw---- 1 root dialout 4, 73 Jan 24 19:15 /dev/ttyS9

  • 0 in reply to Bin Liu
    Prodigy 220 points

    there is no such file name in device k3-am625-sk.dtb, k3-am62-lp-sk.dtb is the closet one.

    root@am62xx-evm:~# ls -l /dev/ttyS*
crw-rw---- 1 root dialout 4, 64 Jan 24 19:15 /dev/ttyS0
crw-rw---- 1 root dialout 4, 65 Jan 24 19:15 /dev/ttyS1
crw-rw---- 1 root dialout 4, 74 Jan 24 19:15 /dev/ttyS10
crw-rw---- 1 root dialout 4, 75 Jan 24 19:15 /dev/ttyS11
crw------- 1 root tty 4, 66 Jan 24 20:07 /dev/ttyS2
crw-rw---- 1 root dialout 4, 67 Jan 24 19:15 /dev/ttyS3
crw-rw---- 1 root dialout 4, 68 Jan 24 19:15 /dev/ttyS4
crw-rw---- 1 root dialout 4, 69 Jan 24 19:15 /dev/ttyS5
crw-rw---- 1 root dialout 4, 70 Jan 24 19:15 /dev/ttyS6
crw-rw---- 1 root dialout 4, 71 Jan 24 19:15 /dev/ttyS7
crw-rw---- 1 root dialout 4, 72 Jan 24 19:15 /dev/ttyS8
crw-rw---- 1 root dialout 4, 73 Jan 24 19:15 /dev/ttyS9
root@am62xx-evm:~#
root@am62xx-evm:~# cd ..
root@am62xx-evm:/# cd boot
root@am62xx-evm:/boot# cd dtb
root@am62xx-evm:/boot/dtb# ls -la ti
total 3708
drwxr-xr-x 2 root root 12288 Jan 24 14:52 .
drwxr-xr-x 3 root root 4096 Dec 6 12:27 ..
-rw-r--r-- 1 root root 75950 Jan 24 19:14 extracted.dts
-rw-r--r-- 1 root root 3177 Dec 6 12:27 k3-am62-lp-sk-lincolntech-lcd185-panel.dtbo
-rw-r--r-- 1 root root 2957 Dec 6 12:27 k3-am62-lp-sk-microtips-mf101hie-panel.dtbo
-rw-r--r-- 1 root root 2745 Dec 6 12:27 k3-am62-lp-sk-nand.dtbo
-rw-r--r-- 1 root root 61690 Jan 24 19:15 k3-am62-lp-sk.dtb
-rw-r--r-- 1 root root 1812 Dec 6 12:27 k3-am625-beagleplay-csi2-ov5640.dtbo
-rw-r--r-- 1 root root 1812 Dec 6 12:27 k3-am625-beagleplay-csi2-tevi-ov5640.dtbo
-rw-r--r-- 1 root root 3934 Dec 6 12:27 k3-am625-beagleplay-lincolntech-lcd185-panel.dtbo
-rw-r--r-- 1 root root 62079 Dec 6 12:27 k3-am625-beagleplay.dtb
-rw-r--r-- 1 root root 43231 Dec 6 12:27 k3-am625-phyboard-lyra-rdk.dtb
-rw-r--r-- 1 root root 752 Dec 6 12:27 k3-am625-sk-ecap-capture.dtbo
-rw-r--r-- 1 root root 3068 Dec 6 12:27 k3-am625-sk-lincolntech-lcd185-panel.dtbo
-rw-r--r-- 1 root root 2189 Dec 6 12:27 k3-am625-sk-m2-cc3301.dtbo
-rw-r--r-- 1 root root 1013 Dec 6 12:27 k3-am625-sk-mcspi-loopback.dtbo
-rw-r--r-- 1 root root 2848 Dec 6 12:27 k3-am625-sk-microtips-mf101hie-panel.dtbo
-rw-r--r-- 1 root root 2071 Dec 6 12:27 k3-am625-sk-rpi-hdr-ehrpwm.dtbo
-rw-r--r-- 1 root root 60319 Dec 6 12:27 k3-am625-sk.dtb
-rw-r--r-- 1 root root 51326 Dec 6 12:27 k3-am625-verdin-nonwifi-dahlia.dtb
-rw-r--r-- 1 root root 51509 Dec 6 12:27 k3-am625-verdin-nonwifi-dev.dtb
-rw-r--r-- 1 root root 50611 Dec 6 12:27 k3-am625-verdin-nonwifi-mallow.dtb
-rw-r--r-- 1 root root 50950 Dec 6 12:27 k3-am625-verdin-nonwifi-yavia.dtb
-rw-r--r-- 1 root root 51748 Dec 6 12:27 k3-am625-verdin-wifi-dahlia.dtb
-rw-r--r-- 1 root root 51927 Dec 6 12:27 k3-am625-verdin-wifi-dev.dtb
-rw-r--r-- 1 root root 51033 Dec 6 12:27 k3-am625-verdin-wifi-mallow.dtb
-rw-r--r-- 1 root root 51372 Dec 6 12:27 k3-am625-verdin-wifi-yavia.dtb
-rw-r--r-- 1 root root 1957 Dec 6 12:27 k3-am62a7-sk-csi2-ox05b1s.dtbo
-rw-r--r-- 1 root root 905 Dec 6 12:27 k3-am62a7-sk-e3-max-opp.dtbo
-rw-r--r-- 1 root root 1405 Dec 6 12:27 k3-am62a7-sk-ethernet-dc01.dtbo
-rw-r--r-- 1 root root 2232 Dec 6 12:27 k3-am62a7-sk-fusion.dtbo
-rw-r--r-- 1 root root 2189 Dec 6 12:27 k3-am62a7-sk-m2-cc3301.dtbo
-rw-r--r-- 1 root root 2151 Dec 6 12:27 k3-am62a7-sk-rpi-hdr-ehrpwm.dtbo
-rw-r--r-- 1 root root 63329 Dec 6 12:27 k3-am62a7-sk-ub954-evm-ov2312.dtb
-rw-r--r-- 1 root root 61175 Dec 6 12:27 k3-am62a7-sk.dtb
-rw-r--r-- 1 root root 2721 Dec 6 12:27 k3-am62p5-sk-dsi-rpi-7inch-panel.dtbo
-rw-r--r-- 1 root root 838 Dec 6 12:27 k3-am62p5-sk-dss-shared-mode.dtbo
-rw-r--r-- 1 root root 959 Dec 6 12:27 k3-am62p5-sk-eqep.dtbo
-rw-r--r-- 1 root root 1090 Dec 6 12:27 k3-am62p5-sk-ethfw.dtbo
-rw-r--r-- 1 root root 1987 Dec 6 12:27 k3-am62p5-sk-m2-cc3301.dtbo
-rw-r--r-- 1 root root 2526 Dec 6 12:27 k3-am62p5-sk-mcan.dtbo
-rw-r--r-- 1 root root 1937 Dec 6 12:27 k3-am62p5-sk-microtips-mf070zima-lcd3.dtbo
-rw-r--r-- 1 root root 2968 Dec 6 12:27 k3-am62p5-sk-microtips-mf101hie-panel.dtbo
-rw-r--r-- 1 root root 2516 Dec 6 12:27 k3-am62p5-sk-microtips-mf103hie-lcd2.dtbo
-rw-r--r-- 1 root root 1658 Dec 6 12:27 k3-am62p5-sk-pwm.dtbo
-rw-r--r-- 1 root root 2129 Dec 6 12:27 k3-am62p5-sk-rpi-hdr-ehrpwm.dtbo
-rw-r--r-- 1 root root 65562 Dec 6 12:27 k3-am62p5-sk.dtb
-rw-r--r-- 1 root root 1281 Dec 6 12:27 k3-am62x-phyboard-lyra-gpio-fan.dtbo
-rw-r--r-- 1 root root 1938 Dec 6 12:27 k3-am62x-sk-csi2-imx219.dtbo
-rw-r--r-- 1 root root 1909 Dec 6 12:27 k3-am62x-sk-csi2-ov5640.dtbo
-rw-r--r-- 1 root root 1909 Dec 6 12:27 k3-am62x-sk-csi2-tevi-ov5640.dtbo
-rw-r--r-- 1 root root 2577 Dec 6 12:27 k3-am62x-sk-csi2-v3link-fusion.dtbo
-rw-r--r-- 1 root root 1796 Dec 6 12:27 k3-am62x-sk-dmtimer-pwm.dtbo
-rw-r--r-- 1 root root 959 Dec 6 12:27 k3-am62x-sk-eqep.dtbo
-rw-r--r-- 1 root root 478 Dec 6 12:27 k3-am62x-sk-fastboot-disable-hdmi.dtbo
-rw-r--r-- 1 root root 1154 Dec 6 12:27 k3-am62x-sk-hdmi-audio.dtbo
-rw-r--r-- 1 root root 3235 Dec 6 12:27 k3-am62x-sk-lpm-wkup-sources.dtbo
-rw-r--r-- 1 root root 1739 Dec 6 12:27 k3-am62x-sk-mcan.dtbo
-rw-r--r-- 1 root root 2505 Dec 6 12:27 k3-am62x-sk-microtips-mf103hie-lcd2.dtbo
-rw-r--r-- 1 root root 2063 Dec 6 12:27 k3-am62x-sk-pwm.dtbo
-rw-r--r-- 1 root root 559 Dec 6 12:27 k3-am64-tqma64xxl-mbax4xxl-sdcard.dtbo
-rw-r--r-- 1 root root 562 Dec 6 12:27 k3-am64-tqma64xxl-mbax4xxl-wlan.dtbo
-rw-r--r-- 1 root root 2206 Dec 6 12:27 k3-am642-evm-icssg1-dualemac-mii.dtbo
-rw-r--r-- 1 root root 2046 Dec 6 12:27 k3-am642-evm-icssg1-dualemac.dtbo
-rw-r--r-- 1 root root 3007 Dec 6 12:27 k3-am642-evm-nand.dtbo
-rw-r--r-- 1 root root 1367 Dec 6 12:27 k3-am642-evm-pcie0-ep.dtbo
-rw-r--r-- 1 root root 913 Dec 6 12:27 k3-am642-evm-sk-cpsw3g-pps.dtbo
-rw-r--r-- 1 root root 64721 Dec 6 12:27 k3-am642-evm.dtb
-rw-r--r-- 1 root root 45425 Dec 6 12:27 k3-am642-phyboard-electra-rdk.dtb
-rw-r--r-- 1 root root 2679 Dec 6 12:27 k3-am642-sk-pwm.dtbo
-rw-r--r-- 1 root root 61937 Dec 6 12:27 k3-am642-sk.dtb
-rw-r--r-- 1 root root 66121 Dec 6 12:27 k3-am642-tqma64xxl-mbax4xxl.dtb
-rw-r--r-- 1 root root 61571 Dec 6 12:27 k3-am6528-iot2050-basic-pg2.dtb
-rw-r--r-- 1 root root 61532 Dec 6 12:27 k3-am6528-iot2050-basic.dtb
-rw-r--r-- 1 root root 1937 Dec 6 12:27 k3-am654-base-board-rocktech-rk101-panel.dtbo
-rw-r--r-- 1 root root 2225 Dec 6 12:27 k3-am654-base-board-toshiba-tc358867-evm.dtbo
-rw-r--r-- 1 root root 70367 Dec 6 12:27 k3-am654-base-board.dtb
-rw-r--r-- 1 root root 72153 Dec 6 12:27 k3-am654-evm.dtb
-rw-r--r-- 1 root root 71400 Dec 6 12:27 k3-am654-gp-evm.dtb
-rw-r--r-- 1 root root 76665 Dec 6 12:27 k3-am654-idk.dtb
-rw-r--r-- 1 root root 1990 Dec 6 12:27 k3-am654-pcie-usb2.dtbo
-rw-r--r-- 1 root root 2016 Dec 6 12:27 k3-am654-pcie-usb3.dtbo
-rw-r--r-- 1 root root 89615 Dec 6 12:27 k3-am6548-iot2050-advanced-m2.dtb
-rw-r--r-- 1 root root 62369 Dec 6 12:27 k3-am6548-iot2050-advanced-pg2.dtb
-rw-r--r-- 1 root root 62330 Dec 6 12:27 k3-am6548-iot2050-advanced.dtb
-rw-r--r-- 1 root root 103376 Dec 6 12:27 k3-am68-sk-base-board.dtb
-rw-r--r-- 1 root root 1668 Dec 6 12:27 k3-am68-sk-bb-csi2-ov5640.dtbo
-rw-r--r-- 1 root root 1518 Dec 6 12:27 k3-am68-sk-rpi-hdr-ehrpwm.dtbo
-rw-r--r-- 1 root root 4200 Dec 6 12:27 k3-am68-sk-v3link-fusion.dtbo
-rw-r--r-- 1 root root 1668 Dec 6 12:27 k3-am69-sk-csi2-ov5640.dtbo
-rw-r--r-- 1 root root 2173 Dec 6 12:27 k3-am69-sk-fpdlink-fusion-auxport.dtbo
-rw-r--r-- 1 root root 1518 Dec 6 12:27 k3-am69-sk-rpi-hdr-ehrpwm.dtbo
-rw-r--r-- 1 root root 123583 Dec 6 12:27 k3-am69-sk.dtb
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-0-0.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-0-1.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-0-2.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-0-3.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-1-0.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-1-1.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-1-2.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-1-3.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-2-0.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-2-1.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-2-2.dtbo
-rw-r--r-- 1 root root 1962 Dec 6 12:27 k3-fpdlink-imx390-rcm-2-3.dtbo
-rw-r--r-- 1 root root 1794 Dec 6 12:27 k3-fpdlink-ov2312-0-0.dtbo
-rw-r--r-- 1 root root 1794 Dec 6 12:27 k3-fpdlink-ov2312-0-1.dtbo
-rw-r--r-- 1 root root 1794 Dec 6 12:27 k3-fpdlink-ov2312-0-2.dtbo
-rw-r--r-- 1 root root 1794 Dec 6 12:27 k3-fpdlink-ov2312-0-3.dtbo
-rw-r--r-- 1 root root 3920 Dec 6 12:27 k3-j7200-evm-ethfw.dtbo
-rw-r--r-- 1 root root 785 Dec 6 12:27 k3-j7200-evm-mcspi-loopback.dtbo
-rw-r--r-- 1 root root 1433 Dec 6 12:27 k3-j7200-evm-pcie1-ep.dtbo
-rw-r--r-- 1 root root 81455 Dec 6 12:27 k3-j7200-evm.dtb
-rw-r--r-- 1 root root 3256 Dec 6 12:27 k3-j721e-beagleboneai64-dsi-rpi-7inch-panel.dtbo
-rw-r--r-- 1 root root 2316 Dec 6 12:27 k3-j721e-beagleboneai64-microtips-mf070zima-lcd3.dtbo
-rw-r--r-- 1 root root 113547 Dec 6 12:27 k3-j721e-beagleboneai64.dtb
-rw-r--r-- 1 root root 3152 Dec 6 12:27 k3-j721e-common-proc-board-infotainment.dtbo
-rw-r--r-- 1 root root 1689 Dec 6 12:27 k3-j721e-evm-csi2-ov5640.dtbo
-rw-r--r-- 1 root root 1531 Dec 6 12:27 k3-j721e-evm-ethfw.dtbo
-rw-r--r-- 1 root root 3905 Dec 6 12:27 k3-j721e-evm-fusion.dtbo
-rw-r--r-- 1 root root 3879 Dec 6 12:27 k3-j721e-evm-gesi-exp-board.dtbo
-rw-r--r-- 1 root root 2137 Dec 6 12:27 k3-j721e-evm-ina2xx.dtbo
-rw-r--r-- 1 root root 1524 Dec 6 12:27 k3-j721e-evm-pcie0-ep.dtbo
-rw-r--r-- 1 root root 1419 Dec 6 12:27 k3-j721e-evm-pcie1-ep.dtbo
-rw-r--r-- 1 root root 125593 Dec 6 12:27 k3-j721e-evm.dtb
-rw-r--r-- 1 root root 3310 Dec 6 12:27 k3-j721e-sk-csi2-dual-imx219.dtbo
-rw-r--r-- 1 root root 1940 Dec 6 12:27 k3-j721e-sk-csi2-ov5640.dtbo
-rw-r--r-- 1 root root 3884 Dec 6 12:27 k3-j721e-sk-fpdlink-fusion.dtbo
-rw-r--r-- 1 root root 1305 Dec 6 12:27 k3-j721e-sk-rpi-hdr-ehrpwm.dtbo
-rw-r--r-- 1 root root 121436 Dec 6 12:27 k3-j721e-sk.dtb
-rw-r--r-- 1 root root 112231 Dec 6 12:27 k3-j721s2-common-proc-board.dtb
-rw-r--r-- 1 root root 1689 Dec 6 12:27 k3-j721s2-evm-csi2-ov5640.dtbo
-rw-r--r-- 1 root root 3905 Dec 6 12:27 k3-j721s2-evm-fusion.dtbo
-rw-r--r-- 1 root root 1791 Dec 6 12:27 k3-j721s2-evm-gesi-exp-board.dtbo
-rw-r--r-- 1 root root 1435 Dec 6 12:27 k3-j721s2-evm-pcie1-ep.dtbo
-rw-r--r-- 1 root root 112817 Dec 6 12:27 k3-j721s2-evm.dtb
-rw-r--r-- 1 root root 2029 Dec 6 12:27 k3-j722s-evm-csi2-ov5640.dtbo
-rw-r--r-- 1 root root 6319 Dec 6 12:27 k3-j722s-evm-csi2-quad-rpi-cam-imx219.dtbo
-rw-r--r-- 1 root root 6346 Dec 6 12:27 k3-j722s-evm-csi2-quad-tevi-ov5640.dtbo
-rw-r--r-- 1 root root 2826 Dec 6 12:27 k3-j722s-evm-dsi-rpi-7inch-panel.dtbo
-rw-r--r-- 1 root root 4008 Dec 6 12:27 k3-j722s-evm-fpdlink-fusion.dtbo
-rw-r--r-- 1 root root 2947 Dec 6 12:27 k3-j722s-evm-microtips-mf101hie-panel.dtbo
-rw-r--r-- 1 root root 1130 Dec 6 12:27 k3-j722s-evm-pwm.dtbo
-rw-r--r-- 1 root root 4378 Dec 6 12:27 k3-j722s-evm-v3link-fusion.dtbo
-rw-r--r-- 1 root root 77973 Dec 6 12:27 k3-j722s-evm.dtb
-rw-r--r-- 1 root root 2413 Dec 6 12:27 k3-j742s2-evm-ethfw.dtbo
-rw-r--r-- 1 root root 125524 Dec 6 12:27 k3-j742s2-evm.dtb
-rw-r--r-- 1 root root 1689 Dec 6 12:27 k3-j784s4-evm-csi2-ov5640.dtbo
-rw-r--r-- 1 root root 1924 Dec 6 12:27 k3-j784s4-evm-ethfw.dtbo
-rw-r--r-- 1 root root 2239 Dec 6 12:27 k3-j784s4-evm-pcie0-pcie1-ep.dtbo
-rw-r--r-- 1 root root 3934 Dec 6 12:27 k3-j784s4-evm-quad-port-eth-exp1.dtbo
-rw-r--r-- 1 root root 2248 Dec 6 12:27 k3-j784s4-evm-usxgmii-exp1-exp2.dtbo
-rw-r--r-- 1 root root 130033 Dec 6 12:27 k3-j784s4-evm.dtb
-rw-r--r-- 1 root root 1990 Dec 6 12:27 k3-v3link-imx219-0-0.dtbo
-rw-r--r-- 1 root root 1990 Dec 6 12:27 k3-v3link-imx219-0-1.dtbo
-rw-r--r-- 1 root root 1990 Dec 6 12:27 k3-v3link-imx219-0-2.dtbo
-rw-r--r-- 1 root root 1990 Dec 6 12:27 k3-v3link-imx219-0-3.dtbo
-rw-r--r-- 1 root root 1990 Dec 6 12:27 k3-v3link-imx219-1-0.dtbo
-rw-r--r-- 1 root root 1990 Dec 6 12:27 k3-v3link-imx219-1-1.dtbo
-rw-r--r-- 1 root root 1990 Dec 6 12:27 k3-v3link-imx219-1-2.dtbo
-rw-r--r-- 1 root root 1990 Dec 6 12:27 k3-v3link-imx219-1-3.dtbo
-rw-r--r-- 1 root root 2018 Dec 6 12:27 k3-v3link-ov5640-0-0.dtbo
-rw-r--r-- 1 root root 2018 Dec 6 12:27 k3-v3link-ov5640-0-1.dtbo
-rw-r--r-- 1 root root 2018 Dec 6 12:27 k3-v3link-ov5640-0-2.dtbo
-rw-r--r-- 1 root root 2018 Dec 6 12:27 k3-v3link-ov5640-0-3.dtbo
-rw-r--r-- 1 root root 2018 Dec 6 12:27 k3-v3link-tevi-ov5640-0-0.dtbo
-rw-r--r-- 1 root root 2018 Dec 6 12:27 k3-v3link-tevi-ov5640-0-1.dtbo
-rw-r--r-- 1 root root 2018 Dec 6 12:27 k3-v3link-tevi-ov5640-0-2.dtbo
-rw-r--r-- 1 root root 2018 Dec 6 12:27 k3-v3link-tevi-ov5640-0-3.dtbo

  • 0 in reply to Bin Liu
    Prodigy 220 points

    AA25_Txd_00d4 - Uart5
    Y23_Rxd_00d0 - Uart5

    Have also tried these pins. Device loads but doesn't communicate

    root@am62xx-evm:~# ls -l /dev/ttyS5
    crw-rw---- 1 root dialout 4, 69 Jan 24 19:58 /dev/ttyS5
    root@am62xx-evm:~# dmesg | grep ttyS5
    [    4.662265] systemd[1]: Expecting device dev-ttyS5.device - /dev/ttyS5...
  • +1 in reply to Fnu Premsagar
    TI__Guru**** 180956 points
    Fnu Premsagar said:
    -rw-r--r-- 1 root root 60319 Dec 6 12:27 k3-am625-sk.dtb

    here it is in your list.

  • +1 in reply to Fnu Premsagar
    TI__Guru**** 180956 points
    Fnu Premsagar said:
    AA25_Txd_00d4 - Uart5
    Y23_Rxd_00d0 - Uart5

    These pins go to the HDMI header, they do not go to the J3 connector.