On Wed, Mar 02, 2016 at 10:37:31AM +0100, Geert Uytterhoeven wrote: > On Wed, Mar 2, 2016 at 3:37 AM, Simon Horman <horms+renesas@xxxxxxxxxxxx> wrote: > > In the case of Renesas R-Car hardware we know that there are generations of > > SoCs, e.g. Gen 2 and Gen 3. But beyond that its not clear what the > > relationship between IP blocks might be. For example, I believe that > > r8a7790 is older than r8a7791 but that doesn't imply that the latter is a > > descendant of the former or vice versa. > > > > We can, however, by examining the documentation and behaviour of the > > hardware at run-time observe that the current driver implementation appears > > to be compatible with the IP blocks on SoCs within a given generation. > > > > For the above reasons and convenience when enabling new SoCs a > > per-generation fallback compatibility string scheme being adopted for > > drivers for Renesas SoCs. > > > > Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx> > > > --- a/Documentation/devicetree/bindings/phy/rcar-gen2-phy.txt > > +++ b/Documentation/devicetree/bindings/phy/rcar-gen2-phy.txt > > @@ -7,6 +7,12 @@ Required properties: > > - compatible: "renesas,usb-phy-r8a7790" if the device is a part of R8A7790 SoC. > > "renesas,usb-phy-r8a7791" if the device is a part of R8A7791 SoC. > > "renesas,usb-phy-r8a7794" if the device is a part of R8A7794 SoC. > > + "renesas,usb-phy-gen2" for a generic R-Car Gen2 compatible device. > > "renesas,rcar-gen2-usb-phy"? I seem to always get these backwards first go :( I'll update this and the following patch as you suggest.
