X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fusb%2Fgadget%2Ffsl_mxc_udc.c;h=5bdbfe6198537d76da36d6077e9d1ac786c5a7fc;hb=8e775167d54e6521e7cdbc03ee7ec42a8c67b49a;hp=eafa6d2c5ed734b278eaf1d34c69ab8f3290e383;hpb=3cf8ad3394b8675e92a35c438f22341197535531;p=karo-tx-linux.git

diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c
index eafa6d2c5ed7..5bdbfe619853 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) {