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authorSimon Horman <horms+renesas@verge.net.au>2016-03-07 10:58:41 +0900
committerKishon Vijay Abraham I <kishon@ti.com>2016-04-29 14:40:07 +0530
commitcde7bc367f09e97deef143ebab3271153d87df00 (patch)
tree0f25e5e19b34a707e124e7acf1e36952e726b4c9 /drivers/phy
parent7777cb8ba08dabcab8dc0e91ac0a26dde675edb6 (diff)
downloadop-kernel-dev-cde7bc367f09e97deef143ebab3271153d87df00.zip
op-kernel-dev-cde7bc367f09e97deef143ebab3271153d87df00.tar.gz
phy: rcar-gen3-usb2: add fallback binding
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 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@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy')
-rw-r--r--drivers/phy/phy-rcar-gen3-usb2.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/phy/phy-rcar-gen3-usb2.c b/drivers/phy/phy-rcar-gen3-usb2.c
index bc4f7dd..257be74 100644
--- a/drivers/phy/phy-rcar-gen3-usb2.c
+++ b/drivers/phy/phy-rcar-gen3-usb2.c
@@ -251,6 +251,7 @@ static irqreturn_t rcar_gen3_phy_usb2_irq(int irq, void *_ch)
static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = {
{ .compatible = "renesas,usb2-phy-r8a7795" },
+ { .compatible = "renesas,rcar-gen3-usb2-phy" },
{ }
};
MODULE_DEVICE_TABLE(of, rcar_gen3_phy_usb2_match_table);
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