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| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-08-03 14:16:15 +0300 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-03-27 10:46:33 +0300 |
| commit | 1966b8657d058ecb95031809b607bf3fd1e01c10 (patch) | |
| tree | f632e2604d7bba4c7bcb20867c5ad41f929acfa3 /drivers/usb/dwc3/core.c | |
| parent | c02ed2e75ef4c74e41e421acb4ef1494671585e8 (diff) | |
| download | linux-1966b8657d058ecb95031809b607bf3fd1e01c10.tar.xz | |
usb: dwc3: make sure UX_EXIT_PX is cleared
This bit is only supposed to be used with known
buggy PHYs, however some platforms might erroneously
set it. In order to avoid it, let's make sure this
bit is always cleared. If some PHY needs this, we
will need to add a quirk flag.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 369bab16a824..8173d0634d68 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -432,6 +432,12 @@ static int dwc3_phy_setup(struct dwc3 *dwc) reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); /* + * Make sure UX_EXIT_PX is cleared as that causes issues with some + * PHYs. Also, this bit is not supposed to be used in normal operation. + */ + reg &= ~DWC3_GUSB3PIPECTL_UX_EXIT_PX; + + /* * Above 1.94a, it is recommended to set DWC3_GUSB3PIPECTL_SUSPHY * to '0' during coreConsultant configuration. So default value * will be '0' when the core is reset. Application needs to set it |