rpineau

I booted with a serial console cable to see what was going on with the overlays ... they are apparently not compile properly : Applying kernel provided DT overlay meson-g12-gxl-cma-pool-896MB.dtbo 343 bytes read in 3 ms (111.3 KiB/s) Applying kernel provided DT overlay meson-i2cA.dtbo failed on fdt_overlay_apply(): FDT_ERR_NOTFOUND 343 bytes read in 3 ms (111.3 KiB/s) Applying kernel provided DT overlay meson-i2cB.dtbo failed on fdt_overlay_apply(): FDT_ERR_BADMAGIC base fdt does did not have a /__symbols__ node make sure you've compiled with -@ 238 bytes read in 3 ms (77.1 KiB/s) Applying kernel provided DT overlay meson-uartA.dtbo failed on fdt_overlay_apply(): FDT_ERR_BADMAGIC base fdt does did not have a /__symbols__ node make sure you've compiled with -@ 238 bytes read in 3 ms (77.1 KiB/s) Applying kernel provided DT overlay meson-uartC.dtbo failed on fdt_overlay_apply(): FDT_ERR_BADMAGIC base fdt does did not have a /__symbols__ node make sure you've compiled with -@ Error applying DT overlays, restoring original DT only the meson-g12-gxl-cma-pool-896MB.dtbo seems to work ok. the first i2c bus works as apparently it's enable in the dtb file : fdtget /boot/dtb/amlogic/meson-g12b-odroid-n2-plus.dtb /soc/bus@ffd00000/i2c@1c000 status okay The other ones are disabled. fdtget /boot/dtb/amlogic/meson-g12b-odroid-n2-plus.dtb /soc/bus@ffd00000/i2c@1d000 status disabled I tried enabling it : n2dev:overlay:# fdtput -t s /boot/dtb/amlogic/meson-g12b-odroid-n2-plus.dtb /soc/bus@ffd00000/i2c@1d000 status "okay" n2dev:overlay:# fdtget /boot/dtb/amlogic/meson-g12b-odroid-n2-plus.dtb /soc/bus@ffd00000/i2c@1d000 status okay and after rebooting it does show up... but the pin are not set to the right mode (ALT1 for pin 3 and 5) and the actual i2c bus is just not working as my devices are not showing up on that bus (they do on the original hardkernel kernel 4.9.x but I want to move to 5.x ). When this 2nd bus is enable, the HDMI i2c is moved to i2c-2 , but nothing is detected on bus 1 : n2dev:~:% i2cdetect -y 0 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: 50 UU -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- n2dev:~:% i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- n2dev:~:% i2cdetect -y 2 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: 30 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: 50 51 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- here is the state of the gpio pins : +-----+-----+---------+------+---+--- N2 ---+---+------+---------+-----+-----+ | I/O | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | I/O | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | | | 3.3V | | | 1 || 2 | | | 5V | | | | 493 | 8 | SDA.2 | IN | 1 | 3 || 4 | | | 5V | | | | 494 | 9 | SCL.2 | IN | 1 | 5 || 6 | | | 0V | | | | 473 | 7 | IO.473 | IN | 0 | 7 || 8 | 1 | IN | TxD1 | 15 | 488 | | | | 0V | | | 9 || 10 | 1 | IN | RxD1 | 16 | 489 | | 479 | 0 | IO.479 | IN | 1 | 11 || 12 | 0 | IN | IO.492 | 1 | 492 | | 480 | 2 | IO.480 | IN | 1 | 13 || 14 | | | 0V | | | | 483 | 3 | IO.483 | IN | 1 | 15 || 16 | 1 | IN | IO.476 | 4 | 476 | | | | 3.3V | | | 17 || 18 | 1 | IN | IO.477 | 5 | 477 | | 484 | 12 | MOSI | IN | 1 | 19 || 20 | | | 0V | | | | 485 | 13 | MISO | IN | 1 | 21 || 22 | 0 | IN | IO.478 | 6 | 478 | | 487 | 14 | SCLK | IN | 1 | 23 || 24 | 1 | IN | CE0 | 10 | 486 | | | | 0V | | | 25 || 26 | 1 | IN | IO.464 | 11 | 464 | | 474 | 30 | SDA.3 | ALT2 | 1 | 27 || 28 | 1 | ALT2 | SCL.3 | 31 | 475 | | 490 | 21 | IO.490 | IN | 1 | 29 || 30 | | | 0V | | | | 491 | 22 | IO.491 | IN | 1 | 31 || 32 | 0 | IN | IO.472 | 26 | 472 | | 481 | 23 | IO.481 | IN | 0 | 33 || 34 | | | 0V | | | | 482 | 24 | IO.482 | IN | 0 | 35 || 36 | 0 | IN | IO.495 | 27 | 495 | | | 25 | AIN.3 | | | 37 || 38 | | | 1V8 | 28 | | | | | 0V | | | 39 || 40 | | | AIN.2 | 29 | | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | I/O | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | I/O | +-----+-----+---------+------+---+--- N2 ---+---+------+---------+-----+-----+ pin 3 and 5 should be in ALT1 mode as seen on a working system (original hard kernel image with their dtbo) : +-----+-----+---------+------+---+--- N2 ---+---+------+---------+-----+-----+ | I/O | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | I/O | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | | | 3.3V | | | 1 || 2 | | | 5V | | | | 493 | 8 | SDA.2 | ALT1 | 1 | 3 || 4 | | | 5V | | | | 494 | 9 | SCL.2 | ALT1 | 1 | 5 || 6 | | | 0V | | | | 473 | 7 | IO.473 | OUT | 1 | 7 || 8 | 1 | ALT1 | TxD1 | 15 | 488 | | | | 0V | | | 9 || 10 | 1 | ALT1 | RxD1 | 16 | 489 | | 479 | 0 | IO.479 | IN | 1 | 11 || 12 | 0 | ALT1 | IO.492 | 1 | 492 | | 480 | 2 | IO.480 | OUT | 0 | 13 || 14 | | | 0V | | | | 483 | 3 | IO.483 | ALT2 | 1 | 15 || 16 | 0 | OUT | IO.476 | 4 | 476 | | | | 3.3V | | | 17 || 18 | 0 | OUT | IO.477 | 5 | 477 | | 484 | 12 | MOSI | IN | 1 | 19 || 20 | | | 0V | | | | 485 | 13 | MISO | IN | 1 | 21 || 22 | 0 | OUT | IO.478 | 6 | 478 | | 487 | 14 | SCLK | IN | 1 | 23 || 24 | 1 | IN | CE0 | 10 | 486 | | | | 0V | | | 25 || 26 | 1 | IN | IO.464 | 11 | 464 | | 474 | 30 | SDA.3 | ALT2 | 1 | 27 || 28 | 1 | ALT2 | SCL.3 | 31 | 475 | | 490 | 21 | IO.490 | ALT1 | 1 | 29 || 30 | | | 0V | | | | 491 | 22 | IO.491 | IN | 1 | 31 || 32 | 0 | OUT | IO.472 | 26 | 472 | | 481 | 23 | IO.481 | ALT4 | 0 | 33 || 34 | | | 0V | | | | 482 | 24 | IO.482 | ALT2 | 1 | 35 || 36 | 0 | OUT | IO.495 | 27 | 495 | | | 25 | AIN.3 | | | 37 || 38 | | | 1V8 | 28 | | | | | 0V | | | 39 || 40 | | | AIN.2 | 29 | | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | I/O | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | I/O | +-----+-----+---------+------+---+--- N2 ---+---+------+---------+-----+-----+ so looks like there might be some deeper issues than just the dtbo not being properly compiled.

I'm testing the Armbian image for Odroid N2+ ( Armbian_22.08.7_Odroidn2_jammy_current_5.19.17_xfce_desktop) to see if it's a good migration path from the HardKernel base image. Unfortunately I need to get both i2c bus running on the GPIO and so far only the first bus seems to work (i2c-0). Looking into /sys/bus/i2c/devices , it looks like i2c-1 is tied to the hdmi port instead of the 2nd i2c bus on the GPIO : lrwxrwxrwx 1 root root 0 Dec 31 1969 0-0051 -> ../../../devices/platform/soc/ffd00000.bus/ffd1c000.i2c/i2c-0/0-0051 lrwxrwxrwx 1 root root 0 Dec 31 1969 i2c-0 -> ../../../devices/platform/soc/ffd00000.bus/ffd1c000.i2c/i2c-0 lrwxrwxrwx 1 root root 0 Dec 31 1969 i2c-1 -> ../../../devices/platform/soc/ff600000.bus/ff600000.hdmi-tx/i2c-1 I also tried to load the uart dtbo using armbian-config, but they do not show up in /dev after a reboot. so it looks like none of the overlay are actually loading. Here is the content of my armbianEnv.txt : verbosity=1 console=both overlay_prefix=meson bootlogo=true rootdev=UUID=9355737e-ddfc-4d22-a953-b2bb4bf41a56 rootfstype=ext4 overlays=g12-gxl-cma-pool-896MB i2cA i2cB uartA uartC usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u so.. how do I enable the i2c port properly, as well as the uarts ... and I will need to also enable pwm on pin 12 and 33 (pwm_ef pwm_cd overlay on Hardkenel images). These is my current overlay line on Hardkernel images : overlays="i2c0 i2c1 uart0 uart1 pwm_ef pwm_cd" Thanks.