From 4dddb862d3e3438129927bfcce6ee2c2c7064eaf Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 16 Oct 2018 12:30:37 +0800 Subject: [PATCH] doc: usb: ci-hdrc-usb2: Add pinctrl properties for HSIC pin groups 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/Documentation/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 and 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", "device" +- pinctrl-names: Names for optional pin modes in "default", "host", "device". + In case of HSIC-mode, "idle" and "active" pin modes are mandatory. In this + 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 i.mx specific properties @@ -111,3 +114,29 @@ Example: mux-controls = <&usb_switch>; mux-control-names = "usb_switch"; }; + +Example for HSIC: + + usb@2184400 { + compatible = "fsl,imx6q-usb", "fsl,imx27-usb"; + reg = <0x02184400 0x200>; + interrupts = <0 41 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clks IMX6QDL_CLK_USBOH3>; + fsl,usbphy = <&usbphynop1>; + fsl,usbmisc = <&usbmisc 2>; + phy_type = "hsic"; + dr_mode = "host"; + ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; + rx-burst-size-dword = <0x10>; + pinctrl-names = "idle", "active"; + pinctrl-0 = <&pinctrl_usbh2_idle>; + pinctrl-1 = <&pinctrl_usbh2_active>; + #address-cells = <1>; + #size-cells = <0>; + + usbnet: smsc@1 { + compatible = "usb424,9730"; + reg = <1>; + }; + };