From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr00063.outbound.protection.outlook.com ([40.107.0.63]:1191 "EHLO EUR02-AM5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729474AbeLKCJG (ORCPT ); Mon, 10 Dec 2018 21:09:06 -0500 From: Peter Chen Subject: [PATCH v5 4/4] doc: usb: ci-hdrc-usb2: Add pinctrl properties for HSIC pin groups Date: Tue, 11 Dec 2018 02:09:04 +0000 Message-ID: <20181211020624.9433-5-peter.chen@nxp.com> References: <20181211020624.9433-1-peter.chen@nxp.com> In-Reply-To: <20181211020624.9433-1-peter.chen@nxp.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org To: "linux-usb@vger.kernel.org" Cc: dl-linux-imx , "robh+dt@kernel.org" , "devicetree@vger.kernel.org" , "frieder.schrempf@exceet.de" , "festevam@gmail.com" , Peter Chen List-ID: For USB HSIC, the data and strobe pin needs to be pulled down at default, we consider it as "idle" state. When the USB host is ready to be used, the strobe pin needs to be pulled up, we consider it as "active" state. Signed-off-by: Peter Chen --- .../devicetree/bindings/usb/ci-hdrc-usb2.txt | 31 ++++++++++++++++++= +++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Docum= entation/devicetree/bindings/usb/ci-hdrc-usb2.txt index 529e51879fb2..3381b9618b5b 100644 --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt @@ -80,7 +80,10 @@ Optional properties: controller. It's expected that a mux state of 0 indicates device mode an= d a mux state of 1 indicates host mode. - mux-control-names: Shall be "usb_switch" if mux-controls is specified. -- pinctrl-names: Names for optional pin modes in "default", "host", "devic= e" +- pinctrl-names: Names for optional pin modes in "default", "host", "devic= e". + In case of HSIC-mode, "idle" and "active" pin modes are mandatory. In th= is + case, the "idle" state needs to pull down the data and strobe pin + and the "active" state needs to pull up the strobe pin. - pinctrl-n: alternate pin modes =20 i.mx specific properties @@ -111,3 +114,29 @@ Example: mux-controls =3D <&usb_switch>; mux-control-names =3D "usb_switch"; }; + +Example for HSIC: + + usb@2184400 { + compatible =3D "fsl,imx6q-usb", "fsl,imx27-usb"; + reg =3D <0x02184400 0x200>; + interrupts =3D <0 41 IRQ_TYPE_LEVEL_HIGH>; + clocks =3D <&clks IMX6QDL_CLK_USBOH3>; + fsl,usbphy =3D <&usbphynop1>; + fsl,usbmisc =3D <&usbmisc 2>; + phy_type =3D "hsic"; + dr_mode =3D "host"; + ahb-burst-config =3D <0x0>; + tx-burst-size-dword =3D <0x10>; + rx-burst-size-dword =3D <0x10>; + pinctrl-names =3D "idle", "active"; + pinctrl-0 =3D <&pinctrl_usbh2_idle>; + pinctrl-1 =3D <&pinctrl_usbh2_active>; + #address-cells =3D <1>; + #size-cells =3D <0>; + + usbnet: smsc@1 { + compatible =3D "usb424,9730"; + reg =3D <1>; + }; + }; --=20 2.14.1