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jak

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  1. Makes sense, thanks @c0rnelius
  2. @c0rnelius it works root@bananapicm4io:~# i2cdetect -y 2 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- 41 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: 70 -- -- -- -- -- -- -- i dont know which device is at 0x70 but i will figure it out. Can you explain why your overlay works?
  3. Any idea how can build the minimal image of an earlier "stable" kernel (that supported the use of inbuilt i2c/uart overlays). I will look into this more when I get the time but at the moment I just want to get i2c working, the ubuntu 20.04 server image is great and works but it takes a bit longer to boot, my assumption is if I can build a minimal image of the same it would improve boot time a little. Yes am aware of the problems that come with using an earlier kernel but at the moment I want to focus on the project functional units and abstract myself from spending an entire day trying to make i2c work.
  4. @c0rnelius thanks for the quick response I had actually tried this before, sorry I didn't include it in my original question. I get the behavior below when i add the user-overlay. Adding this user overlay seems to enable an i2c device but i still dont get any comms on that i2c device root@bananapicm4io:/home/pi# sudo cat /sys/kernel/debug/pinctrl/ff634400.bus:pinctrl@40-pinctrl-meson/pinmux-pins | grep i2c pin 22 (GPIOH_6): ffd1e000.i2c (GPIO UNCLAIMED) function i2c1 group i2c1_sda_h6 pin 23 (GPIOH_7): ffd1e000.i2c (GPIO UNCLAIMED) function i2c1 group i2c1_sck_h7 pin 63 (GPIOA_14): ffd1c000.i2c (GPIO UNCLAIMED) function i2c3 group i2c3_sda_a pin 64 (GPIOA_15): ffd1c000.i2c (GPIO UNCLAIMED) function i2c3 group i2c3_sck_a pin 82 (GPIOX_17): ffd1d000.i2c (GPIO UNCLAIMED) function i2c2 group i2c2_sda_x pin 83 (GPIOX_18): ffd1d000.i2c periphs-banks:595 function i2c2 group i2c2_sck_x root@bananapicm4io:/home/pi# i2cdetect -l i2c-0 i2c Meson I2C adapter I2C adapter i2c-1 i2c Meson I2C adapter I2C adapter i2c-2 i2c Meson I2C adapter I2C adapter i2c-3 i2c DesignWare HDMI I2C adapter root@bananapicm4io:/home/pi# See root@bananapicm4io:/home/pi# 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: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- root@bananapicm4io:/home/pi# 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: -- -- -- -- -- -- -- -- root@bananapicm4io:/home/pi# i2cdetect -y 2 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- root@bananapicm4io:/home/pi# i2cdetect -y 3 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: 30 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- root@bananapicm4io:/home/pi# This is the same issue i had when i tried to create my own user overlay (you can see in the armbian-monitor trace my fruitless attempts) To prove that its not my hardware connection, here is the same command runned on an SD card running this ambian build: 2023-12-26-ubuntu-20.04-server-bpi-cm4-aarch64-sd-emmc.img.zip https://drive.google.com/drive/folders/1ogrdn-Kx5oqIOLUhwMqqMAhxZIcDYzPs (All i did was swap the sd card and runned the same cmd, no change in h/w connections) Notice in the trace below its able to detect the i2c device on address root@ubuntu:/home/pi# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.04.6 LTS Release: 20.04 Codename: focal root@ubuntu:/home/pi# uname -r 4.9.241-BPI-CM4 root@ubuntu:/home/pi# i2cdetect -l i2c-3 i2c Meson I2C adapter I2C adapter i2c-2 i2c Meson I2C adapter I2C adapter root@ubuntu:/home/pi# i2cdetect -y 2 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- 41 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: 70 -- -- -- -- -- -- -- root@ubuntu:/home/pi# tail /boot/env.txt # 2 - 180 degree # 3 - 270 degree fb_rotate=0 # Device Tree Overlays # uart1 -- Enable UART1 (uart_A, GPIO Header PIN8 & PIN10) # pwm_c -- Enable PWM_C (GPIO Header PIN7) # i2c2 -- Enable i2c2 (GPIO Header PIN3 & PIN5) # spi0 -- Enable SPI0 (GPIO Header PIN19 & PIN21 & PIN23 & PIN24) overlays="i2c2" root@ubuntu:/home/pi#
  5. context ------------ Hardware: BPI CM4 on BPI CM4IO board OS: Armbian 24.11.1 Bookworm Minimal Build: https://dl.armbian.com/bananapicm4io/Bookworm_current_minimal problem ------------ How do i enable i2c2 so i can be able to use the following pins on the BPI CM4IO board for i2c pin 82 (GPIOX_17): (MUX UNCLAIMED) (GPIO UNCLAIMED) pin 83 (GPIOX_18): (MUX UNCLAIMED) periphs-banks:595 Previously on the ubuntu build all i had to do is add the following line to `/boot/env.txt` , `overlays="12c2"`, as stated in this doc https://wiki.banana-pi.org/Getting_Started_with_CM4#DTB_overlay 2. Update the overlays env in vfat /boot/env.txt to enable what you want. # Device Tree Overlays # uart1 -- Enable UART1 (uart_A, GPIO Header PIN8 & PIN10) # pwm_c -- Enable PWM_C (GPIO Header PIN7) # i2c2 -- Enable i2c2 (GPIO Header PIN3 & PIN5) # spi0 -- Enable SPI0 (GPIO Header PIN19 & PIN21 & PIN23 & PIN24) overlays="i2c2 spi0 uart1" but on the `Armbian 24.11.1 Bookworm Minimal Build` i cant find this overlay pi@bananapicm4io:~$ sudo ls /boot/dtb-6.6.61-current-meson64/amlogic/overlay/ README.meson-overlays meson-g12a-radxa-zero-pwmao-a-on-gpioao-11.dtbo meson-i2cA.dtbo meson-fixup.scr meson-g12a-radxa-zero-spi-spidev.dtbo meson-i2cB.dtbo meson-g12-gxl-cma-pool-896MB.dtbo meson-g12a-radxa-zero-uart-ao-a-on-gpioao-0-gpioao-1.dtbo meson-sm1-bananapi-m5-rtl8822cs.dtbo meson-g12-pwm-gpiox-5-fan.dtbo meson-g12a-radxa-zero-uart-ao-b-on-gpioao-2-gpioao-3.dtbo meson-sm1-bananapi-uartA.dtbo meson-g12a-radxa-zero-gpio-10-led.dtbo meson-g12a-radxa-zero-uart-ao-b-on-gpioao-8-gpioao-9.dtbo meson-sm1-bananapi-uartAO_B.dtbo meson-g12a-radxa-zero-gpio-8-led.dtbo meson-g12a-radxa-zero-uart-ee-c.dtbo meson-sm1-bananapi-uartA_cts_rts.dtbo meson-g12a-radxa-zero-i2c-ao-m0-gpioao-2-gpioao-3.dtbo meson-g12b-bananapi-cm4-pwm-gpioh-5-fan.dtbo meson-uartA.dtbo meson-g12a-radxa-zero-i2c-ee-m1-gpioh-6-gpioh-7.dtbo meson-g12b-bananapi-cm4-wifi-freq-200mhz.dtbo meson-uartC.dtbo meson-g12a-radxa-zero-i2c-ee-m1-gpiox-10-gpiox-11.dtbo meson-g12b-bananapi-m2s-rtl8822cs.dtbo meson-w1-gpio.dtbo meson-g12a-radxa-zero-i2c-ee-m3-gpioa-14-gpioa-15.dtbo meson-g12b-odroid-n2-spi.dtbo meson-w1AB-gpio.dtbo meson-g12a-radxa-zero-pwm-c-on-gpiox-8.dtbo meson-g12b-waveshare-cm4-io-base-usb.dtbo pi@bananapicm4io:~$ cat /boot/armbianEnv.txt verbosity=1 console=both overlay_prefix=meson fdtfile=amlogic/meson-g12b-bananapi-cm4-cm4io.dtb rootdev=UUID=e4b40e17-5d66-4b52-a45e-4a8c6cdee335 rootfstype=ext4 fdt_overlays= overlays=i2c2 usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u pi@bananapicm4io:~$ i2cdetect output on Armbian (on ubuntu image i get a reading on i2cdetect -y 1 but not on armbian) pi@bananapicm4io:~$ sudo i2cdetect -l i2c-0 i2c Meson I2C adapter I2C adapter i2c-1 i2c Meson I2C adapter I2C adapter i2c-2 i2c DesignWare HDMI I2C adapter pi@bananapicm4io:~$ sudo 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: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- pi@bananapicm4io:~$ sudo 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: -- -- -- -- -- -- -- -- pi@bananapicm4io:~$
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