[I am starting out with a BananPi Pro - I'm a newbie to Linux troubleshooting - Why are some DT overlays not loading on boot?]

Hi,
I have a similar problem with Bananapi M2 Zero.

Did you find a solution?

[SPIDEV dissappeared on Armbian 22.02 Bullseye 5.15.26]

U-Boot 2021.10-armbian (Nov 05 2021 - 13:19:06 -0600) Allwinner Technology

CPU:   Allwinner H3 (SUN8I 1680)
Model: Banana Pi BPI-M2-Zero
DRAM:  512 MiB
MMC:   mmc@1c0f000: 0, mmc@1c10000: 2
Loading Environment from FAT... Unable to use mmc 0:1... In:    serial@1c28000
Out:   serial@1c28000
Err:   serial@1c28000
Net:   No ethernet found.
Autoboot in 1 seconds, press <Space> to stop
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot/boot.scr
3964 bytes read in 4 ms (967.8 KiB/s)
## Executing script at 43100000
U-boot loaded from SD
Boot script loaded from mmc
352 bytes read in 4 ms (85.9 KiB/s)
10388878 bytes read in 440 ms (22.5 MiB/s)
8303240 bytes read in 351 ms (22.6 MiB/s)
Found mainline kernel configuration
34107 bytes read in 11 ms (3 MiB/s)
478 bytes read in 9 ms (51.8 KiB/s)
Applying kernel provided DT overlay sun8i-h3-cpu-clock-1.2GHz-1.3v.dtbo
374 bytes read in 10 ms (36.1 KiB/s)
Applying kernel provided DT overlay sun8i-h3-i2c0.dtbo
788 bytes read in 10 ms (76.2 KiB/s)
Applying kernel provided DT overlay sun8i-h3-spi-spidev.dtbo
502 bytes read in 10 ms (48.8 KiB/s)
Applying kernel provided DT overlay sun8i-h3-uart1.dtbo
502 bytes read in 10 ms (48.8 KiB/s)
Applying kernel provided DT overlay sun8i-h3-uart2.dtbo
502 bytes read in 10 ms (48.8 KiB/s)
Applying kernel provided DT overlay sun8i-h3-uart3.dtbo
504 bytes read in 10 ms (48.8 KiB/s)
Applying kernel provided DT overlay sun8i-h3-usbhost0.dtbo
504 bytes read in 10 ms (48.8 KiB/s)
Applying kernel provided DT overlay sun8i-h3-usbhost1.dtbo
504 bytes read in 10 ms (48.8 KiB/s)
Applying kernel provided DT overlay sun8i-h3-usbhost2.dtbo
504 bytes read in 10 ms (48.8 KiB/s)
Applying kernel provided DT overlay sun8i-h3-usbhost3.dtbo
4185 bytes read in 11 ms (371.1 KiB/s)
Applying kernel provided DT fixup script (sun8i-h3-fixup.scr)
## Executing script at 45000000
Kernel image @ 0x42000000 [ 0x000000 - 0x7eb288 ]
## Loading init Ramdisk from Legacy Image at 43400000 ...
   Image Name:   uInitrd
   Image Type:   ARM Linux RAMDisk Image (gzip compressed)
   Data Size:    10388814 Bytes = 9.9 MiB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 43000000
   Booting using the fdt blob at 0x43000000
   Loading Ramdisk to 49617000, end 49fff54e ... OK
   Loading Device Tree to 495a6000, end 49616fff ... OK

Starting kernel ...

[SPIDEV dissappeared on Armbian 22.02 Bullseye 5.15.26]

Hello,
I am also having a problem with spidev. I am using Banana-pi-m2-zero with ARMBIAN based Ubuntu Focal. I can't enable spi-dev. I have write in armbiancomfig.txt the following:

overlays=cpu-clock-1.3GHz-1.3v i2c0 spi-spidev

param_spidev_spi_bus=0

param_spidev_spi_cs=0

Checking the kernel logs with "dmesg | grep spidev" no show relevant info.

Reading other posts: Do I have to change sun8i-h3-spi-spidev.dtbo?
I have seen similar problem with this processor:https://archlinuxarm.org/forum/viewtopic.php?f=60&t=15395

 

 

 

 

[sc16is750 with Banana Pi M2 Zero]

sudo cat /proc/tty/drivers
/dev/tty             /dev/tty        5       0 system:/dev/tty
/dev/console         /dev/console    5       1 system:console
dev/ptmx            /dev/ptmx       5       2 system
/dev/vc/0            /dev/vc/0       4       0 system:vtmaster
usbserial            /dev/ttyUSB   188 0-511 serial
g_serial             /dev/ttyGS    242 0-7 serial
unknown              /dev/ttySC    243 0-7 serial
serial               /dev/ttyS       4 64-71 serial
pty_slave            /dev/pts      136 0-1048575 pty:slave
pty_master           /dev/ptm      128 0-1048575 pty:master
unknown              /dev/tty        4 1-63 console

[sc16is750 with Banana Pi M2 Zero]

I have attached sc16is740 to the I2C port of BPI. sc16is740 is a device that lets me work with i2c like a uart. The device is detected with the comand:

sudo i2cdetect -y 0

nº48

00: – -- – -- – -- – -- – -- – -- –

10: – -- – -- – -- – -- – -- – -- – -- – --

20: – -- – -- – -- – -- – -- – -- – -- – --

30: – -- – -- – -- – -- – -- – -- – -- – --

40: 40 – -- – -- – -- – 48 – -- – -- – -- –

50: – -- – -- – -- – -- – -- – -- – -- – --

60: – -- – -- – -- – -- – -- – -- – -- – --

70: 70 – -- – -- – -- –

Then I have load the driver with: sudo  modprobe sc16is7xx 0x48

Using:

sudo  modprobe sc16is7xx 

I see the module sc16is7xx loaded using:

sudo lsmod

However, the system does not created a new interface like ttySC0 and I do not know how to tell the driver which IRQ Pin should use.

I have tested also:

sudo modprobe i2c:sc16is740  int_pin=4 addr=0x48

Then, I have added the module to: /etc/modules-load.d/module_name.conf
 

I am missing some steps.

Could someone help to load this driver?

 

PSD: I have try also to load this driver in an Radxa Zero. Same result

Thanks