diff options
| author | Simon Horman <horms+renesas@verge.net.au> | 2017-07-11 14:38:30 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-08-14 15:01:12 +0200 |
| commit | dbd1dad2ab8ffca57e0aa386df0d7ec621c26ca8 (patch) | |
| tree | 6d87d418de756eaa773decaf1364dd9895cb0811 /drivers/gpio | |
| parent | 4a5c886e7cc913b60b68825846cd43dcfe7a2be0 (diff) | |
| download | linux-dbd1dad2ab8ffca57e0aa386df0d7ec621c26ca8.tar.gz linux-dbd1dad2ab8ffca57e0aa386df0d7ec621c26ca8.tar.xz | |
gpio: rcar: add gen[123] fallback compatibility strings
Add fallback compatibility string for R-Car Gen 1, 2 and 3.
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 being adopted for
drivers for Renesas SoCs.
Also deprecate renesas,gpio-rcar as its name is more generic than its
implementation.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-rcar.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index 4a1536a050bc..1f0871553fd2 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -371,6 +371,16 @@ static const struct of_device_id gpio_rcar_of_table[] = { /* Gen3 GPIO is identical to Gen2. */ .data = &gpio_rcar_info_gen2, }, { + .compatible = "renesas,rcar-gen1-gpio", + .data = &gpio_rcar_info_gen1, + }, { + .compatible = "renesas,rcar-gen2-gpio", + .data = &gpio_rcar_info_gen2, + }, { + .compatible = "renesas,rcar-gen3-gpio", + /* Gen3 GPIO is identical to Gen2. */ + .data = &gpio_rcar_info_gen2, + }, { .compatible = "renesas,gpio-rcar", .data = &gpio_rcar_info_gen1, }, { |