• Simon Horman's avatar
    dt-bindings: net: sh_eth: add R-Car Gen[12] fallback compatibility strings · 87d9fa64
    Simon Horman authored
    Add fallback compatibility strings for R-Car Gen 1 and 2.
    
    In the case of Renesas R-Car hardware we know that there are generations of
    SoCs, f.e. 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 is being adopted for
    drivers for Renesas SoCs.
    
    Note that R-Car Gen2 and RZ/G1 have many compatible IP blocks.  The
    approach that has been consistently taken for other IP blocks is to name
    common code, compatibility strings and so on after R-Car Gen2.
    Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
    Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
    Reviewed-by: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    87d9fa64
sh_eth.txt 2.83 KB