[PATCH v2 2/5] dt-bindings: Add a binding for Mediatek xHCI host controller
From: Roger Quadros <hidden>
Date: 2015-07-10 08:31:56
Also in:
linux-devicetree, linux-mediatek, lkml
Hi, On 08/07/15 12:41, Chunfeng Yun wrote:
quoted hunk ↗ jump to hunk
add a DT binding documentation of xHCI host controller for the MT8173 SoC from Mediatek. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> --- .../devicetree/bindings/usb/mt8173-xhci.txt | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/mt8173-xhci.txtdiff --git a/Documentation/devicetree/bindings/usb/mt8173-xhci.txt b/Documentation/devicetree/bindings/usb/mt8173-xhci.txt new file mode 100644 index 0000000..94cec94 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/mt8173-xhci.txt@@ -0,0 +1,27 @@ +MT65XX xhci + +The device node for Mediatek SOC usb3.0 host controller + +Required properties: + - compatible : supports "mediatek,mt8173-xhci" + - reg : Offset and length of registers + - interrupts : Interrupt mode, number and trigger mode + - reg-vusb33-supply: regulator of usb avdd3.3v + - reg-vbus-supply : regulator of vbus;
General trend is to use <supply-name>-supply. We already know it is a regulator so no need to add "reg-" So those two can be vusb33-supply: vbus-supply:
+ - usb-phy : the phy that xhci will bind
+ - usb3-lpm-capable: supports USB3 LPM
+ - clocks : must support all clocks that xhci needs
+ - clock-names: should be "sys_mac" for sys and mac clocks
+
+Example:
+usb: usb30 at 11270000 {
+ compatible = "mediatek,mt8173-xhci";
+ reg = <0 0x11270000 0 0x1000>;
+ interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
+ reg-vusb33-supply = <&mt6397_vusb_reg>;
+ reg-vbus-supply = <&usb_p1_vbus>;
+ usb-phy = <&u3phy>;
+ usb3-lpm-capable;
+ clocks = <&topckgen CLK_TOP_USB30_SEL>;
+ clock-names = "sys_mac";
+};cheers, -roger