Hi, > From: Kishon Vijay Abraham I [mailto:kishon@xxxxxx] > Sent: Friday, December 06, 2013 6:31 AM > > Hi, > > On Thursday 05 December 2013 05:59 PM, Kamil Debski wrote: > > Previously the of_phy_get function took a struct device * and was > > declared static. It was impossible to call it from another driver and > > thus it was impossible to get phy defined > > It was never intended to be called from other drivers. What's up with > the wrapper of of_phy_get, phy_get()/devm_phy_get()? Why isn't that > enough? Implementing support for multiple phys in the ehci driver is a bit tricky. Especially when we want to do it right. Please have a look at this part of the dts file: + ehci@12580000 { + compatible = "samsung,exynos4210-ehci"; + reg = <0x12580000 0x20000>; + interrupts = <0 70 0>; + clocks = <&clock 304>, <&clock 305>; + clock-names = "usbhost", "otg"; + status = "disabled"; + #address-cells = <1>; + #size-cells = <0>; + port@0 { + reg = <0>; + phys = <&usb2phy 1>; + phy-names = "host"; + status = "disabled"; + }; + port@1 { + reg = <1>; + phys = <&usb2phy 2>; + phy-names = "hsic0"; + status = "disabled"; + }; + port@2 { + reg = <2>; + phys = <&usb2phy 3>; + phy-names = "hsic1"; + status = "disabled"; + }; + }; With the above we have a clear specification of ports and their respective phys. But to do this properly the ehci driver has to iterate over port nodes. It is much easier to use devm_of_phy_get by giving the node as its argument. [snip] Best wishes, -- Kamil Debski Samsung R&D Institute Poland -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
