Re: kernel oops in 'typec_ucsi' due to commit 'drivers property: When no children in primary, try secondary'

[Maxim Levitsky]

On Thu, 2020-07-16 at 10:28 +0200, Greg KH wrote:
> On Thu, Jul 16, 2020 at 11:17:03AM +0300, Maxim Levitsky wrote:
> > Hi!
> > 
> > Few days ago I bisected a regression on 5.8 kernel:
> > 
> > I have nvidia rtx 2070s and its USB type C port driver (which is open source)
> 
> Is that driver merged into the tree?  If not, do you have a pointer to
> it somewhere?
> 
> thanks,
> 
> greg k-h
> 
It is in the tree.

CONFIG_TYPEC_UCSI selectes the generic UCSI driver
CONFIG_UCSI_CCG selects the hardware driver,
which is an i2c driver which binds to an i2c device (I think with address 0x8)
on an i2c controller, which is exposed by function 3 of the NVIDIA card, and uses the
CONFIG_I2C_NVIDIA_GPU driver.

We also have CONFIG_TYPEC_NVIDIA_ALTMODE which I haven't researched
what it does.

Best regards,
	Maxim Levitsky