1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c
index eafa6d2c5ed..5bdbfe61985 100644
--- a/drivers/usb/gadget/fsl_mxc_udc.c
+++ b/drivers/usb/gadget/fsl_mxc_udc.c
@@ -22,6 +22,10 @@
 static struct clk *mxc_ahb_clk;
 static struct clk *mxc_usb_clk;
 
+/* workaround ENGcm09152 for i.MX35 */
+#define USBPHYCTRL_OTGBASE_OFFSET       0x608
+#define USBPHYCTRL_EVDO                 (1 << 23)
+
 int fsl_udc_clk_init(struct platform_device *pdev)
 {
         struct fsl_usb2_platform_data *pdata;
@@ -84,6 +88,17 @@ eenahb:
 void fsl_udc_clk_finalize(struct platform_device *pdev)
 {
         struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
+#if defined(CONFIG_ARCH_MX35)
+        unsigned int v;
+
+        /* workaround ENGcm09152 for i.MX35 */
+        if (pdata->workaround & FLS_USB2_WORKAROUND_ENGCM09152) {
+                v = readl(MX35_IO_ADDRESS(MX35_OTG_BASE_ADDR +
+                                USBPHYCTRL_OTGBASE_OFFSET));
+                writel(v | USBPHYCTRL_EVDO, MX35_IO_ADDRESS(MX35_OTG_BASE_ADDR +
+                                USBPHYCTRL_OTGBASE_OFFSET));
+        }
+#endif
 
         /* ULPI transceivers don't need usbpll */
         if (pdata->phy_mode == FSL_USB2_PHY_ULPI) {