On Sat, Jun 25, 2016 at 10:24:54PM -0700, Stephen Boyd wrote: > This is a minimal driver to support bringing a usb4604 device > from microchip out of reset and into hub mode. The usb4604 device > is related to the usb3503 device, but it didn't seem close enough > to warrant putting both into the same file. This patch borrows > some of the usb3503 structure and trims it down to just handle > the optional reset gpio and adds the i2c command to put the > device into hub mode. > > Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/00001716A.pdf > Cc: <devicetree@xxxxxxxxxxxxxxx> > Signed-off-by: Stephen Boyd <stephen.boyd@xxxxxxxxxx> > --- > Documentation/devicetree/bindings/usb/usb4604.txt | 19 +++ > drivers/usb/misc/Kconfig | 6 + > drivers/usb/misc/Makefile | 1 + > drivers/usb/misc/usb4604.c | 175 ++++++++++++++++++++++ > 4 files changed, 201 insertions(+) > create mode 100644 Documentation/devicetree/bindings/usb/usb4604.txt > create mode 100644 drivers/usb/misc/usb4604.c > > diff --git a/Documentation/devicetree/bindings/usb/usb4604.txt b/Documentation/devicetree/bindings/usb/usb4604.txt > new file mode 100644 > index 000000000000..82506d17712c > --- /dev/null > +++ b/Documentation/devicetree/bindings/usb/usb4604.txt > @@ -0,0 +1,19 @@ > +SMSC USB4604 High-Speed Hub Controller > + > +Required properties: > +- compatible: Should be "smsc,usb4604" > + > +Optional properties: > +- reg: Specifies the i2c slave address, it is required and should be 0x2d > + if I2C is used. > +- reset-gpios: Should specify GPIO for reset. > +- initial-mode: Should specify initial mode. > + (1 for HUB mode, 2 for STANDBY mode) I was going to ask what would be the purpose of standby mode, and say it needs a vendor prefix, but I see you are re-using this from the 3503. > + > +Examples: > + usb-hub@2d { I'm not sure what we'll do when/if we need this as a USB bus child node. Acked-by: Rob Herring <robh@xxxxxxxxxx> > + compatible = "smsc,usb4604"; > + reg = <0x2d>; > + reset-gpios = <&gpx3 5 1>; > + initial-mode = <1>; > + }; -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
