jak
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How do I Enable i2c2 on Armbian 24.11.1 Bookworm Minimal
jak replied to jak's topic in Banana PI CM4-IO
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How do I Enable i2c2 on Armbian 24.11.1 Bookworm Minimal
jak replied to jak's topic in Banana PI CM4-IO
@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? -
How do I Enable i2c2 on Armbian 24.11.1 Bookworm Minimal
jak replied to jak's topic in Banana PI CM4-IO
Ok, thanks @c0rnelius -
How do I Enable i2c2 on Armbian 24.11.1 Bookworm Minimal
jak replied to jak's topic in Banana PI CM4-IO
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. -
How do I Enable i2c2 on Armbian 24.11.1 Bookworm Minimal
jak replied to jak's topic in Banana PI CM4-IO
@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# -
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:~$