diff options
Diffstat (limited to 'drivers/usb/host/ehci-fsl.c')
-rw-r--r-- | drivers/usb/host/ehci-fsl.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 8f3bf3efb038..9e9c232e896f 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -236,6 +236,15 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, portsc |= PORT_PTS_PTW; /* fall through */ case FSL_USB2_PHY_UTMI: + /* Presence of this node "has_fsl_erratum_a006918" + * in device-tree is used to stop USB controller + * initialization in Linux + */ + if (pdata->has_fsl_erratum_a006918) { + dev_warn(dev, "USB PHY clock invalid\n"); + return -EINVAL; + } + /* fall through */ case FSL_USB2_PHY_UTMI_DUAL: /* PHY_CLK_VALID bit is de-featured from all controller * versions below 2.4 and is to be checked only for |