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phy: rcar-gen3-usb2: Add R-Car Gen3 USB2 PHY driver

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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>
This commit is contained in:
Yoshihiro Shimoda
2015-11-30 10:44:30 +09:00
committed by Kishon Vijay Abraham I
parent 708744628b
commit f3b5a8d9b5
4 changed files with 262 additions and 0 deletions
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7
drivers/phy/Kconfig
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@@ -118,6 +118,13 @@ config PHY_RCAR_GEN2
help
Support for USB PHY found on Renesas R-Car generation 2 SoCs.
config PHY_RCAR_GEN3_USB2
tristate "Renesas R-Car generation 3 USB 2.0 PHY driver"
depends on OF && ARCH_SHMOBILE
select GENERIC_PHY
help
Support for USB 2.0 PHY found on Renesas R-Car generation 3 SoCs.
config OMAP_CONTROL_PHY
tristate "OMAP CONTROL PHY Driver"
depends on ARCH_OMAP2PLUS || COMPILE_TEST