On Tue, Jul 11, 2017 at 01:44:20PM +0200, Simon Horman wrote: > Add fallback compatibility string for R-Car Gen 2 and 3. > > In the case of Renesas R-Car hardware we know that there are generations of > SoCs, e.g. Gen 1 and 2. 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> > --- > Based on libata/for-next > --- > Documentation/devicetree/bindings/ata/sata_rcar.txt | 14 +++++++++++--- > drivers/ata/sata_rcar.c | 8 ++++++++ > 2 files changed, 19 insertions(+), 3 deletions(-) Acked-by: Rob Herring <robh@xxxxxxxxxx>
