Re: [PATCH v3 5/6] ARM: dts: omap: update usb_otg_hs data
From: Stephen Warren <hidden>
Date: 2013-03-20 20:59:51
Also in:
linux-arm-kernel, linux-omap, lkml
On 03/20/2013 03:12 AM, Kishon Vijay Abraham I wrote:
Updated the usb_otg_hs dt data to include the *phy* and *phy-names* binding in order for the driver to use the new generic PHY framework. Also updated the Documentation to include the binding information.
quoted hunk ↗ jump to hunk
diff --git a/Documentation/devicetree/bindings/usb/omap-usb.txt b/Documentation/devicetree/bindings/usb/omap-usb.txt index abce256..3d6f9f6 100644 --- a/Documentation/devicetree/bindings/usb/omap-usb.txt +++ b/Documentation/devicetree/bindings/usb/omap-usb.txt@@ -19,6 +19,9 @@ OMAP MUSB GLUE - power : Should be "50". This signifies the controller can supply upto 100mA when operating in host mode. - usb-phy : the phandle for the PHY device + - phy : the phandle for the PHY device (used by generic PHY framework) + - phy-names : the names of the PHY corresponding to the PHYs present in the + *phy* phandle.
If the intent is for those properties to be generic and used by any DT binding that refers to a PHY node, I think you'd want to define those properties in e.g. Documentation/devicetree/bindings/phy/phy.txt, just like common clock/GPIO/... properties are defined in standalone common files. I think you want to require that DT nodes that represent PHYs have a #phy-cells property, and that the format of the phy property be <&phy_phandle phy_specifier*>, where #phy-cells in the referenced node defines how many cells are part of phy_specifier*, just like (almost) any other DT property that references another node by phandle. That way, if a single DT node represents a HW block that implements e.g. 3 PHYs, it can use #phy-cells = <1>, and the referencing phy property can include a cell that indicates which of those 3 PHYs is being referenced.