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author | Simon Horman <horms+renesas@verge.net.au> | 2017-10-18 09:21:28 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2017-10-20 08:32:24 +0100 |
commit | b4804e0c71c144b673b6c53ca4acfcac6eb98704 (patch) | |
tree | 358330761822571f18db0952abddaef3b6fb59ac | |
parent | 6c4b2f7e675cf11587182f51adcf0e129005e2f9 (diff) | |
download | linux-b4804e0c71c144b673b6c53ca4acfcac6eb98704.tar.gz linux-b4804e0c71c144b673b6c53ca4acfcac6eb98704.tar.xz |
net: sh_eth: implement R-Car Gen[12] fallback compatibility strings
Implement 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: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | drivers/net/ethernet/renesas/sh_eth.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index c9f92fc8555e..7e060aa9fbed 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -3095,6 +3095,8 @@ static const struct of_device_id sh_eth_match_table[] = { { .compatible = "renesas,ether-r8a7793", .data = &rcar_gen2_data }, { .compatible = "renesas,ether-r8a7794", .data = &rcar_gen2_data }, { .compatible = "renesas,ether-r7s72100", .data = &r7s72100_data }, + { .compatible = "renesas,rcar-gen1-ether", .data = &rcar_gen1_data }, + { .compatible = "renesas,rcar-gen2-ether", .data = &rcar_gen2_data }, { } }; MODULE_DEVICE_TABLE(of, sh_eth_match_table); |