diff options
Diffstat (limited to 'drivers/usb/gadget/fsl_mxc_udc.c')
| -rw-r--r-- | drivers/usb/gadget/fsl_mxc_udc.c | 15 |
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 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) { |