diff options
| author | Huang Rui <ray.huang@amd.com> | 2014-10-28 11:54:27 (GMT) |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-11-03 16:03:36 (GMT) |
| commit | 9a5b2f3167c1f98b879d6a800ab138f04e34f9d5 (patch) | |
| tree | cb0d1900039e1ecef1f267d05b78c84ad25b1285 /drivers/usb/dwc3/core.c | |
| parent | 80caf7d21adca10c4621d511f6eb01f7ed2b342c (diff) | |
| download | linux-9a5b2f3167c1f98b879d6a800ab138f04e34f9d5.tar.xz | |
usb: dwc3: add u2exit lfps quirk
This patch adds u2exit lfps quirk, and some special platforms can configure
that if it is needed.
[ balbi@ti.com : added DeviceTree binding documentation ]
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Felipe Balbi <balbi@ti.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 6f9e5b8..33cbea5 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -473,6 +473,9 @@ static int dwc3_core_init(struct dwc3 *dwc) else reg &= ~DWC3_GCTL_DISSCRAMBLE; + if (dwc->u2exit_lfps_quirk) + reg |= DWC3_GCTL_U2EXIT_LFPS; + /* * WORKAROUND: DWC3 revisions <1.90a have a bug * where the device can fail to connect at SuperSpeed @@ -729,6 +732,8 @@ static int dwc3_probe(struct platform_device *pdev) dwc->disable_scramble_quirk = of_property_read_bool(node, "snps,disable_scramble_quirk"); + dwc->u2exit_lfps_quirk = of_property_read_bool(node, + "snps,u2exit_lfps_quirk"); } else if (pdata) { dwc->maximum_speed = pdata->maximum_speed; dwc->has_lpm_erratum = pdata->has_lpm_erratum; @@ -739,6 +744,7 @@ static int dwc3_probe(struct platform_device *pdev) dwc->dr_mode = pdata->dr_mode; dwc->disable_scramble_quirk = pdata->disable_scramble_quirk; + dwc->u2exit_lfps_quirk = pdata->u2exit_lfps_quirk; } /* default to superspeed if no maximum_speed passed */ |