On Sun, Dec 17, 2017 at 11:16 PM, Yoshihiro Shimoda <yoshihiro.shimoda...@renesas.com> wrote: > Hi Rob, > > Thank you for your comments! > >> -----Original Message----- >> From: Rob Herring, Sent: Sunday, December 17, 2017 3:05 AM >> >> On Fri, Dec 15, 2017 at 02:45:26PM +0900, Yoshihiro Shimoda wrote: >> > Some R-Car SoCs (e.g. R-Car D3) doesn't have dedicated pins of VBUS >> > and ID. So, they may be connected to gpio pins. To handle the gpio >> > pins, this patch adds the handling of VBUS and ID pins instead of >> > dedicated pins. >> > >> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda...@renesas.com> >> > --- >> > .../devicetree/bindings/phy/rcar-gen3-phy-usb2.txt | 2 + >> > drivers/phy/renesas/phy-rcar-gen3-usb2.c | 77 >> > ++++++++++++++++++++-- >> > 2 files changed, 72 insertions(+), 7 deletions(-) >> > >> > diff --git a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt >> b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt >> > index 99b651b..999a6ef 100644 >> > --- a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt >> > +++ b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt >> > @@ -27,6 +27,8 @@ channel as USB OTG: >> > - interrupts: interrupt specifier for the PHY. >> > - vbus-supply: Phandle to a regulator that provides power to the VBUS. >> > This >> > regulator will be managed during the PHY power on/off sequence. >> > +- vbus-gpios: use gpio to control vbus instead of dedicated pin. >> >> How does this relate to vbus-supply? A gpio-regulator doesn't work here? > > Thank you for the pointed out. You're correct. A gpio-regulator can work > intead of "vbus-gpios". > So, I will drop this. > >> > +- id-gpios: use gpio to detect id instead of dedicated pin. >> >> These aren't part of the phy, but really belong in a connector node. > > I'm afraid but I don't understand "a connector node" mean. > Is it an extcon device for instance? > If so, I'll try to use extcon-usb-gpio.c instead of own gpio handling on the > driver.
No, extcon binding has a lot of Linuxisms in it. I mean something like hdmi-connector binding. There's been some attempts[1] for USB connectors, but nothing finalized. Rob [1] https://www.spinics.net/lists/linux-usb/msg161104.html
