From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Jones Subject: Re: [PATCH v8 4/9] mfd: Add binding document for NVIDIA Tegra XUSB Date: Wed, 13 May 2015 15:39:54 +0100 Message-ID: <20150513143954.GA3394@x1> References: <1430761002-9327-1-git-send-email-abrestic@chromium.org> <1430761002-9327-5-git-send-email-abrestic@chromium.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: <1430761002-9327-5-git-send-email-abrestic-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Andrew Bresticker Cc: Stephen Warren , Thierry Reding , Alexandre Courbot , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Jon Hunter , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Samuel Ortiz List-Id: devicetree@vger.kernel.org On Mon, 04 May 2015, Andrew Bresticker wrote: > Add a binding document for the XUSB host complex on NVIDIA Tegra124 > and later SoCs. The XUSB host complex includes a mailbox for > communication with the XUSB micro-controller and an xHCI host-control= ler. >=20 > Signed-off-by: Andrew Bresticker > Cc: Rob Herring > Cc: Pawel Moll > Cc: Mark Rutland > Cc: Ian Campbell > Cc: Kumar Gala > Cc: Samuel Ortiz > Cc: Lee Jones > --- > Changes from v7: > - Move non-shared resources into child nodes. > New for v7. > --- > .../bindings/mfd/nvidia,tegra124-xusb.txt | 37 ++++++++++++= ++++++++++ > 1 file changed, 37 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mfd/nvidia,tegr= a124-xusb.txt >=20 > diff --git a/Documentation/devicetree/bindings/mfd/nvidia,tegra124-xu= sb.txt b/Documentation/devicetree/bindings/mfd/nvidia,tegra124-xusb.txt > new file mode 100644 > index 0000000..bc50110 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/nvidia,tegra124-xusb.txt > @@ -0,0 +1,37 @@ > +NVIDIA Tegra XUSB host copmlex > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D > + > +The XUSB host complex on Tegra124 and later SoCs contains an xHCI ho= st > +controller and a mailbox for communication with the XUSB micro-contr= oller. > + > +Required properties: > +-------------------- > + - compatible: For Tegra124, must contain "nvidia,tegra124-xusb". > + Otherwise, must contain '"nvidia,-xusb", "nvidia,tegra124-x= usb"' > + where is tegra132. > + - reg: Must contain the base and length of the XUSB FPCI registers. > + - ranges: Bus address mapping for the XUSB block. Can be empty sin= ce the > + mapping is 1:1. > + - #address-cells: Must be 2. > + - #size-cells: Must be 2. > + > +Example: > +-------- > + usb@0,70098000 { > + compatible =3D "nvidia,tegra124-xusb"; > + reg =3D <0x0 0x70098000 0x0 0x1000>; > + ranges; > + > + #address-cells =3D <2>; > + #size-cells =3D <2>; > + > + usb-host@0,70090000 { > + compatible =3D "nvidia,tegra124-xhci"; > + ... > + }; > + > + mailbox { > + compatible =3D "nvidia,tegra124-xusb-mbox"; > + ... > + }; This doesn't appear to be a proper MFD. I would have the USB and Mailbox devices probe seperately and use a phandle to point the USB device to its Mailbox. usb@xyz { mboxes =3D <&xusb-mailbox, [chan]>; }; --=20 Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org =E2=94=82 Open source software for ARM SoCs =46ollow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html