From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Jones Subject: Re: [PATCH v2 2/3] ARM: dts: sti: Add st-dwc3 devicetree bindings documentation Date: Mon, 7 Jul 2014 12:00:55 +0100 Message-ID: <20140707110055.GF6407@lee--X1> References: <1404541530-27856-1-git-send-email-peter.griffin@linaro.org> <1404541530-27856-3-git-send-email-peter.griffin@linaro.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: <1404541530-27856-3-git-send-email-peter.griffin@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: Peter Griffin Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, maxime.coquelin@st.com, patrice.chotard@st.com, srinivas.kandagatla@gmail.com, devicetree@vger.kernel.org, balbi@ti.com, linux-usb@vger.kernel.org, linux-omap@vger.kernel.org, peppe.cavallaro@st.com List-Id: devicetree@vger.kernel.org Subject is wrong, this has nothing to do with ARM. Should be USB. On Sat, 05 Jul 2014, Peter Griffin wrote: > This patch documents the device tree documentation required for > the ST usb3 controller glue layer found in STiH407 devices. >=20 > Signed-off-by: Giuseppe Cavallaro > Signed-off-by: Peter Griffin > --- > Documentation/devicetree/bindings/usb/dwc3-st.txt | 58 +++++++++++++= ++++++++++ > 1 file changed, 58 insertions(+) > create mode 100644 Documentation/devicetree/bindings/usb/dwc3-st.txt >=20 > diff --git a/Documentation/devicetree/bindings/usb/dwc3-st.txt b/Docu= mentation/devicetree/bindings/usb/dwc3-st.txt > new file mode 100644 > index 0000000..befd964 > --- /dev/null > +++ b/Documentation/devicetree/bindings/usb/dwc3-st.txt > @@ -0,0 +1,58 @@ > +ST DWC3 glue logic > + > +This file documents the parameters for the dwc3-st driver. Does this line really add anything to do the document, considering the name and location of the file and the title above? > +This driver provides the glue logic to use the dwc3 on STiH407 based= platforms. s/This driver/The DWC2 driver/ > +Required properties: > + - compatible : must be "st,stih407-dwc3" > + - reg : glue logic base address and USB syscfg ctrl register offse= t > + - reg-names : should be "reg-glue" and "syscfg-reg" Any reason why you have reg-* and *-reg? If you have to put 'reg' in the name, it's usually appended, rather than prefixed. > + - st,syscon : should be phandle to system configuration node which > + encompasses the glue registers > + - resets : phandle pointing to the system powerdown controller > +See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt > +See: Documentation/devicetree/bindings/reset/reset.txt > + > + - #address-cells, #size-cells : should be '1' if the device has sub= -nodes > + with 'reg' property > + > + - pinctl-names : A pinctrl state named "default" must be defined > +See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt > + > + - pinctrl-0 : Pin control group > +See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt > + > + - ranges : allows valid 1:1 translation between child's address spa= ce and > + parent's address space > + > +Optional properties: > + - st,dwc3-drd-device: to program the HC as "device" (static setup) This will require a DT Ack. > +Sub-nodes: > +The dwc3 core should be added as subnode to ST DWC3 glue as shown in= the > +example below. The DT binding details of dwc3 can be found in: > +Documentation/devicetree/bindings/usb/dwc3.txt > + > +Example: > + > +st_dwc3: dwc3@8f94000 { > + status =3D "disabled"; Probably not good to disable the node in the example. > + compatible =3D "st,stih407-dwc3"; > + reg =3D <0x08f94000 0x1000>, <0x110 0x4>; > + reg-names =3D "reg-glue", "syscfg-reg"; > + st,syscfg =3D <&syscfg_core>; > + resets =3D <&powerdown STIH407_USB3_POWERDOWN>; > + #address-cells =3D <1>; > + #size-cells =3D <1>; > + pinctrl-names =3D "default"; > + pinctrl-0 =3D <&pinctrl_usb3>; > + ranges; > + > + dwc3: dwc3@9900000 { > + compatible =3D "synopsys,dwc3"; > + reg =3D <0x09900000 0x100000>; > + interrupts =3D ; > + > + usb-phy =3D <&usb2_phy>, <&usb3_phy>; > + }; > +}; --=20 Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org =E2=94=82 Open source software for ARM SoCs =46ollow Linaro: Facebook | Twitter | Blog