Commit Graph

8 Commits

Author SHA1 Message Date
Yoshihiro Shimoda
2b38543c8d phy: rcar-gen3-usb2: add extcon support
This patch adds extcon support for otg related channel.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2016-04-30 20:12:26 +05:30
Yoshihiro Shimoda
6dcfd7c300 phy: rcar-gen3-usb2: Add vbus-supply to handle VBUS on/off
To handle the VBUS on/off by a regulator driver, this patch adds
regulator APIs calling in the driver and description about vbus-supply
in the rcar-gen3-phy-usb2.txt.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2016-04-30 20:12:25 +05:30
Yoshihiro Shimoda
801a69c787 phy: rcar-gen3-usb2: remove unnecesary struct rcar_gen3_data
Since this driver uses the struct rcar_gen3_data in struct rcar_gen3_chan
only, we can remove the rcar_gen3_data.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2016-04-30 20:12:25 +05:30
Simon Horman
cde7bc367f 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>
2016-04-29 14:40:07 +05:30
Yoshihiro Shimoda
b956401699 phy: rcar-gen3-usb2: remove HSUSB registers handling
Since the related driver (CPG/MSSR driver) only manages the first module
clock, this driver should not handle the HSUSB registers. So, this patch
removes the HSUSB registers handling.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2016-03-01 17:13:50 +05:30
Yoshihiro Shimoda
9f391c574e phy: rcar-gen3-usb2: add runtime ID/VBUS pin detection
This patch adds support for runtime ID/VBUS pin detection if
the channel 0 of R-Car gen3 is used. So, we are able to use
the channel as both host and peripheral.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-12-20 15:21:37 +05:30
Yoshihiro Shimoda
1114e2d317 phy: rcar-gen3-usb2: change the mode to OTG on the combined channel
To use the channel 0 of R-Car gen3 as periperal mode, This patch changes
the mode to OTG instead of HOST. Then, this driver needs to set some
registers to enable host mode and detects ID pin and VBUS pin at
phy_init() timing.

For now, the channel 0 can be used as host mode only.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-12-20 15:21:37 +05:30
Yoshihiro Shimoda
f3b5a8d9b5 phy: rcar-gen3-usb2: Add R-Car Gen3 USB2 PHY driver
This patch adds support for R-Car generation 3 USB2 PHY driver.
This SoC has 3 EHCI/OHCI channels, and the channel 0 is shared
with the HSUSB (USB2.0 peripheral) device. And each channel has
independent registers about the PHYs.

So, the purpose of this driver is:
 1) initializes some registers of SoC specific to use the
    {ehci,ohci}-platform driver.

 2) detects id pin to select host or peripheral on the channel 0.

For now, this driver only supports 1) above.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-12-20 15:21:37 +05:30