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| author | Simon Horman <horms+renesas@verge.net.au> | 2016-12-12 10:49:35 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-12-14 17:38:18 +0000 |
| commit | 4286db8456f4fa0c6af2b6b9abc5991a7e7da69c (patch) | |
| tree | cd75a7ae69486439143d1811515c5d1cdebf02c5 /drivers | |
| parent | fafd67940774733fa97f4b09412aea6981b82e0a (diff) | |
| download | linux-stable-4286db8456f4fa0c6af2b6b9abc5991a7e7da69c.tar.gz linux-stable-4286db8456f4fa0c6af2b6b9abc5991a7e7da69c.tar.bz2 linux-stable-4286db8456f4fa0c6af2b6b9abc5991a7e7da69c.zip | |
spi: sh-msiof: Add R-Car Gen 2 and 3 fallback bindings
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 it's 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.
Also:
* Deprecate renesas,sh-msiof. It seems poorly named as it is only
compatible with SH-Mobile. It also appears unused in mainline.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi-sh-msiof.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index 0012ad02e569..471ca211b76c 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -973,14 +973,16 @@ static const struct sh_msiof_chipdata r8a779x_data = { }; static const struct of_device_id sh_msiof_match[] = { - { .compatible = "renesas,sh-msiof", .data = &sh_data }, { .compatible = "renesas,sh-mobile-msiof", .data = &sh_data }, { .compatible = "renesas,msiof-r8a7790", .data = &r8a779x_data }, { .compatible = "renesas,msiof-r8a7791", .data = &r8a779x_data }, { .compatible = "renesas,msiof-r8a7792", .data = &r8a779x_data }, { .compatible = "renesas,msiof-r8a7793", .data = &r8a779x_data }, { .compatible = "renesas,msiof-r8a7794", .data = &r8a779x_data }, + { .compatible = "renesas,rcar-gen2-msiof", .data = &r8a779x_data }, { .compatible = "renesas,msiof-r8a7796", .data = &r8a779x_data }, + { .compatible = "renesas,rcar-gen3-msiof", .data = &r8a779x_data }, + { .compatible = "renesas,sh-msiof", .data = &sh_data }, // Deprecated {}, }; MODULE_DEVICE_TABLE(of, sh_msiof_match); |