* Keerthy [off-list ref] [180925 05:18]:

I tried Branch [1] above. AM335x-boneblack is doing all good with ds0.
AM437x-gp the following is happening:

https://pastebin.ubuntu.com/p/fmZNYgJ9Sp/

There seems to be a timeout due to which resume is not immediate i see
1-2s delay and i see i2c timeout.

[  402.247271] omap_i2c 4802a000.i2c: controller timed out
[  402.247441] pixcir_ts 1-005c: pixcir_int_enable: can't read reg 0x34
: -110
[  402.247486] pixcir_ts 1-005c: Failed to disable interrupt generation:
-110
[  402.247522] pixcir_ts 1-005c: Failed to stop
[  402.247607] dpm_run_callback(): pixcir_i2c_ts_resume+0x0/0x98
[pixcir_i2c_ts] returns -110

so pixcir_i2c_ts_resume is retuning -110 which is timeout error code.

I did some touch screen testing after DS0 resume seems to be working.
Everything is in pastebin link provided above.

Thanks for testing. Hmm no idea what might be going on with
the pixcir. I have edt-ft5x06 on the am437x-sk-evm and that
behaves just fine for suspend and resume. Both are on i2c1,
pixcir calls pixcir_start/stop from suspend and resume while
edt-ft5x06 does not reconfigure anything.

I'll try read some edt-ft5x06 register values on suspend
and resume, let's see if that makes it reproducable here.

Regards,

Tony