Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1702725 > unrolled thread
| Started by | Zain Wang <wzz@rock-chips.com> |
|---|---|
| First post | 2017-08-03 09:30 +0200 |
| Last post | 2017-08-04 12:30 +0200 |
| Articles | 3 — 2 participants |
Back to article view | Back to linux.kernel
Some ideas about tcpm driver Zain Wang <wzz@rock-chips.com> - 2017-08-03 09:30 +0200
Re: Some ideas about tcpm driver Guenter Roeck <groeck@google.com> - 2017-08-03 15:10 +0200
Re: Some ideas about tcpm driver Zain Wang <wzz@rock-chips.com> - 2017-08-04 12:30 +0200
| From | Zain Wang <wzz@rock-chips.com> |
|---|---|
| Date | 2017-08-03 09:30 +0200 |
| Subject | Some ideas about tcpm driver |
| Message-ID | <uaiJY-56H-17@gated-at.bofh.it> |
Hi all,
In recent days, I tested the fusb302 driver with tcpm. (RK3399 evb board)
But I found an issues:
There is not a regulator for type-c vbus power-supply in my board.
The vbus is just controlled by a gpio-pin, and unable to support
other voltage except 5V.
But now, I can't use fusb302 driver without workaround fix.
Could you fix it in next version? @Yueyao
The altmode looks not complete. I can't enter DP Alt Mode now.
And we'd like to used extcon function (used in Chrome) to link usb, dp
and type-c together.
How do you think about it? @Guenter
Thanks
Zain
[toc] | [next] | [standalone]
| From | Guenter Roeck <groeck@google.com> |
|---|---|
| Date | 2017-08-03 15:10 +0200 |
| Message-ID | <uao2Z-n3-5@gated-at.bofh.it> |
| In reply to | #1702725 |
On Thu, Aug 3, 2017 at 12:28 AM, Zain Wang <wzz@rock-chips.com> wrote: > Hi all, > > In recent days, I tested the fusb302 driver with tcpm. (RK3399 evb board) > But I found an issues: > There is not a regulator for type-c vbus power-supply in my board. > The vbus is just controlled by a gpio-pin, and unable to support other > voltage except 5V. gpio-regulator does not work ? > But now, I can't use fusb302 driver without workaround fix. > Could you fix it in next version? @Yueyao > > The altmode looks not complete. I can't enter DP Alt Mode now. Yes, I know. Patches welcome. > And we'd like to used extcon function (used in Chrome) to link usb, dp and > type-c together. Plan is to use the extcon driver (from cros-ec) to register with the type-c infrastructure. I have not thought about how to tie low level drivers (fusb/tcpm) with extcon. Ideas welcome. Guenter > How do you think about it? @Guenter > > Thanks > Zain >
[toc] | [prev] | [next] | [standalone]
| From | Zain Wang <wzz@rock-chips.com> |
|---|---|
| Date | 2017-08-04 12:30 +0200 |
| Message-ID | <uaI1H-5Ka-3@gated-at.bofh.it> |
| In reply to | #1703086 |
在 2017/8/3 21:02, Guenter Roeck 写道: > On Thu, Aug 3, 2017 at 12:28 AM, Zain Wang <wzz@rock-chips.com> wrote: >> Hi all, >> >> In recent days, I tested the fusb302 driver with tcpm. (RK3399 evb board) >> But I found an issues: >> There is not a regulator for type-c vbus power-supply in my board. >> The vbus is just controlled by a gpio-pin, and unable to support other >> voltage except 5V. > gpio-regulator does not work ? Thanks for you idea， it works well with regulator-gpio. Zain > >> But now, I can't use fusb302 driver without workaround fix. >> Could you fix it in next version? @Yueyao >> >> The altmode looks not complete. I can't enter DP Alt Mode now. > Yes, I know. Patches welcome. > >> And we'd like to used extcon function (used in Chrome) to link usb, dp and >> type-c together. > Plan is to use the extcon driver (from cros-ec) to register with the > type-c infrastructure. I have not thought about how to tie low level > drivers (fusb/tcpm) with extcon. Ideas welcome. > > Guenter > >> How do you think about it? @Guenter >> >> Thanks >> Zain >> > >
[toc] | [prev] | [standalone]
Back to top | Article view | linux.kernel
csiph-web