From mboxrd@z Thu Jan 1 00:00:00 1970 From: hzpeterchen@gmail.com (Peter Chen) Date: Fri, 15 Jul 2016 15:15:16 +0800 Subject: [PATCH v2 2/5] usb: DT binding documentation for qoriq usb 2.0 controller In-Reply-To: References: <1468038656-10345-1-git-send-email-rajesh.bhagat@nxp.com> <1468038656-10345-3-git-send-email-rajesh.bhagat@nxp.com> <20160711064845.GH31647@shlinux2> Message-ID: <20160715071516.GG817@shlinux2> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jul 12, 2016 at 03:59:14AM +0000, Rajesh Bhagat wrote: > > > > -----Original Message----- > > From: Peter Chen [mailto:hzpeterchen at gmail.com] > > Sent: Monday, July 11, 2016 12:19 PM > > To: Rajesh Bhagat > > Cc: linux-usb at vger.kernel.org; linux-kernel at vger.kernel.org; > > devicetree at vger.kernel.org; Peter Chen ; > > gregkh at linuxfoundation.org; kishon at ti.com; robh+dt at kernel.org; > > shawnguo at kernel.org; linux-arm-kernel at lists.infradead.org > > Subject: Re: [PATCH v2 2/5] usb: DT binding documentation for qoriq usb 2.0 > > controller > > > > On Sat, Jul 09, 2016 at 10:00:53AM +0530, Rajesh Bhagat wrote: > > > Describes the qoriq usb 2.0 controller driver binding, currently used > > > for LS1021A and LS1012A platform. > > > > > > Signed-off-by: Rajesh Bhagat > > > --- > > > Changes in v2: > > > - Adds DT binding documentation for qoriq usb 2.0 controller > > > - Changed the compatible string to fsl,ci-qoriq-usb2 > > > > > > .../devicetree/bindings/usb/ci-hdrc-qoriq.txt | 34 > > ++++++++++++++++++++++ > > > 1 file changed, 34 insertions(+) > > > create mode 100644 > > > Documentation/devicetree/bindings/usb/ci-hdrc-qoriq.txt > > > > > > diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-qoriq.txt > > > b/Documentation/devicetree/bindings/usb/ci-hdrc-qoriq.txt > > > new file mode 100644 > > > index 0000000..8ad7306 > > > --- /dev/null > > > +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-qoriq.txt > > > @@ -0,0 +1,34 @@ > > > +* Freescale QorIQ SoC USB 2.0 Controllers > > > + > > > +Required properties: > > > +- compatible: Should be "fsl,ci-qoriq-usb2" > > > + Wherever applicable, the IP version of the USB controller should > > > + also be mentioned (for eg. fsl,ci-qoriq-usb2-vX.Y). > > > + where, X.Y is IP version of USB controller. > > Hello Peter, > > > > > Why you need to add IP version at compatible string? > > Does it can't be read out from ID register of Identification Registers. > > > > I agree. Will drop this controller version thing in DTS in v3. > > > > +- reg: Should contain registers location and length > > > +- interrupts: Should contain controller interrupt > > > +- phy-names: from the *Generic PHY* bindings > > > +- phys: from the *Generic PHY* bindings > > > +- clocks: clock provider specifier > > > +- clock-names: shall be "usb2-clock" > > > +Refer to clk/clock-bindings.txt for generic clock consumer properties > > > + > > > +Recommended properties: > > > +- dr_mode: One of "host" or "peripheral". > > > > Do you support dual-role? > > > > Yes. We do support both host/peripheral mode. > I mean dual-role switch. If you support that, the dr_mode should be "otg". -- Best Regards, Peter Chen