diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2014-10-24 19:41:47 +0900 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2014-10-30 09:56:32 +0900 |
| commit | 37f7c1b0c1ed9465b2e2609ba57bba8a874ddd3c (patch) | |
| tree | 9c6ff2481a3822d6917b6297588850d53a3220b0 /arch/arm/boot/dts/r8a7790-lager.dts | |
| parent | 157fcd8a3e6fb46ad99b615838afe16e8fcebd61 (diff) | |
ARM: shmobile: lager: enable USB3.0
Since the PHY of USB3.0 and EHCI/OHCI ch2 are the same, the USB3.0
driver cannot use the phy driver when the EHCI/OHCI ch2 already used it:
phy phy-e6590100.usb-phy.3: phy init failed --> -16
xhci-hcd: probe of ee000000.usb failed with error -16
If so, we have to unbind the EHCI/OHCI ch2, and then we have to bind
the USB3.0 driver as the following:
echo 0000:02:02.0 > /sys/bus/pci/drivers/ehci-pci/unbind
echo 0000:02:01.0 > /sys/bus/pci/drivers/ohci-pci/unbind
echo ee000000.usb > /sys/bus/platform/drivers/xhci-hcd/bind
Note that there will be pinctrl-related error messages if both
internal PCI and USB3.0 are enabled but they should be just ignored:
sh-pfc e6060000.pfc: pin GP_5_22 already requested by ee0d0000.pci; cannot claim for ee000000.usb
sh-pfc e6060000.pfc: pin-182 (ee000000.usb) status -22
ata1: SATA link down (SStatus 0 SControl 300)
sh-pfc e6060000.pfc: could not request pin 182 (GP_5_22) from group usb2 on device sh-pfc
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/boot/dts/r8a7790-lager.dts')
| -rw-r--r-- | arch/arm/boot/dts/r8a7790-lager.dts | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts index e96f95216437..d869f2a6826a 100644 --- a/arch/arm/boot/dts/r8a7790-lager.dts +++ b/arch/arm/boot/dts/r8a7790-lager.dts @@ -466,6 +466,12 @@ pinctrl-names = "default"; }; +&xhci { + status = "okay"; + pinctrl-0 = <&usb2_pins>; + pinctrl-names = "default"; +}; + &pci2 { status = "okay"; pinctrl-0 = <&usb2_pins>; |