a64-pine64+ goodix touchscreen (i2c) fails to load on reboot

[Learnincurve 8]

Armbianmonitor:

http://ix.io/2M0f

 5.10.4-sunxi64 pine64 board with goodix 7" mipi-dsi LCD touchscreen.

 

The LCD output is working fine across reboots after enabling the dt overlay using armbian-config.

 

For the touchscreen, I have added "goodix" to /etc/modules and the digitizer works fine from all cold boots:

~$ dmesg | grep -i goodix
[    5.836601] Goodix-TS 1-005d: supply VDDIO not found, using dummy regulator
[    5.843605] Goodix-TS 1-005d: ID k}\xfa, version: 7b6f
[    5.866815] input: Goodix Capacitive TouchScreen as /devices/platform/soc/1c2ac00.i2c/i2c-1/1-005d/input/input5

 

but a reboot leads to either:

[    5.856172] Goodix-TS 1-005d: supply VDDIO not found, using dummy regulator
[    5.856668] Goodix-TS 1-005d: i2c test failed attempt 1: -6
[    5.886780] Goodix-TS 1-005d: ID k}\xfa, version: 7b6f
[    5.909817] input: Goodix Capacitive TouchScreen as /devices/platform/soc/1c2ac00.i2c/i2c-1/1-005d/input/input5

and the screen works

 

or:

$ dmesg | grep -i goodix
[    5.862909] Goodix-TS 1-005d: supply VDDIO not found, using dummy regulator
[    5.864033] Goodix-TS 1-005d: i2c test failed attempt 1: -6
[    5.889397] Goodix-TS 1-005d: i2c test failed attempt 2: -6
[    5.925072] Goodix-TS 1-005d: I2C communication failure: -6

 

a double reboot works.

 

It looks like the i2c bus is not being completely reset in time, but that multiple connection attempts  sometimes succeed.

 

Can anyone suggest a workaround, to force a reset, add more i2c test iterations or provide more time to load from reboot?

 

BR.

 

 

[lucapinello 0]

Hi I just installed the armbian and I can get the lcd to work. I don't see the problem you are reporting however  the mapping of the touchscreen is confined to the left top corner. How can I fix this? Thanks a lot for any help you may provide!