ENGR00161314-1 mx6q usb-host: add hsic support

MSL part

Add HSIC support for Host2 and Host3, for HSIC mode, there
is not usb phy needed, the usb device is always at the board

- Validation hardware: iMX6Q Validation Port Card and Re-worked
Rev X3 board, for hardware rework detail, contact Ken Sun (b03826)

- Validation device: HSIC interface SMSC HUB(USB4640) and Host 3.
Host 2 is coding finishes, but not verified due to hardware limitation.

- Pin Conflict with Ethernet, order to use HSIC, the user need
disable ethernet function at both u-boot and linux kernel.
For u-boot: please undefine CONFIG_MXC_FEC at your board config file
For kernel: please define CONFIG_USB_EHCI_ARC_HSIC, the entry is:
Device Drivers---> USB support---> Support HSIC Host controller
for Freescale SoC

- Suspend/resume and wakeup are not supported due to IC issues,
these IC issues will be fixed at TO1.1 for i.mx6, software will
add these support after receiving TO1.1 chip.

Signed-off-by: Peter Chen <peter.chen@freescale.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/usb_common.c b/arch/arm/plat-mxc/usb_common.c
index a6a32ee4a02e..5ebbc6ef9b33 100755
--- a/arch/arm/plat-mxc/usb_common.c
+++ b/arch/arm/plat-mxc/usb_common.c
@@ -887,6 +887,10 @@ EXPORT_SYMBOL(usb_event_is_otg_wakeup);
 void fsl_platform_set_usb_phy_dis(struct fsl_usb2_platform_data *pdata,
 				  bool enable)
 {
+	/* for HSIC, we do not need to enable disconnect detection */
+	if (pdata->phy_mode == FSL_USB2_PHY_HSIC)
+		return;
+
 	if (enable)
 		__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
 			MX6_IO_ADDRESS(pdata->phy_regs) + HW_USBPHY_CTRL_SET);