diff options
| author | William Wu <william.wu@rock-chips.com> | 2016-08-16 22:44:39 +0800 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-08-25 12:13:11 +0300 |
| commit | 00fe081dc3a37032c05e308c40d241d60c05ebe6 (patch) | |
| tree | 08717b3e4cd39eb6c4998162fc5fa0938595cc65 | |
| parent | 32f2ed864dd523bca2ee804effa9f3f43aa03ba6 (diff) | |
usb: dwc3: add dis_del_phy_power_chg_quirk
Add a quirk to clear the GUSB3PIPECTL.DELAYP1TRANS bit,
which specifies whether disable delay PHY power change
from P0 to P1/P2/P3 when link state changing from U0
to U1/U2/U3 respectively.
Signed-off-by: William Wu <william.wu@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
| -rw-r--r-- | Documentation/devicetree/bindings/usb/dwc3.txt | 2 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.c | 5 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 3 |
3 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt index 020b0e935fd3..e96bfc20907e 100644 --- a/Documentation/devicetree/bindings/usb/dwc3.txt +++ b/Documentation/devicetree/bindings/usb/dwc3.txt @@ -42,6 +42,8 @@ Optional properties: - snps,dis-u2-freeclk-exists-quirk: when set, clear the u2_freeclk_exists in GUSB2PHYCFG, specify that USB2 PHY doesn't provide a free-running PHY clock. + - snps,dis-del-phy-power-chg-quirk: when set core will change PHY power + from P0 to P1/P2/P3 without delay. - snps,is-utmi-l1-suspend: true when DWC3 asserts output signal utmi_l1_suspend_n, false when asserts utmi_sleep_n - snps,hird-threshold: HIRD threshold diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index edbca03df60c..b5e0ccc2d88a 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -448,6 +448,9 @@ static int dwc3_phy_setup(struct dwc3 *dwc) if (dwc->dis_u3_susphy_quirk) reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; + if (dwc->dis_del_phy_power_chg_quirk) + reg &= ~DWC3_GUSB3PIPECTL_DEPOCHANGE; + dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); @@ -947,6 +950,8 @@ static int dwc3_probe(struct platform_device *pdev) "snps,dis_rxdet_inp3_quirk"); dwc->dis_u2_freeclk_exists_quirk = device_property_read_bool(dev, "snps,dis-u2-freeclk-exists-quirk"); + dwc->dis_del_phy_power_chg_quirk = device_property_read_bool(dev, + "snps,dis-del-phy-power-chg-quirk"); dwc->tx_de_emphasis_quirk = device_property_read_bool(dev, "snps,tx_de_emphasis_quirk"); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index cc4f55123ca8..3d94acd14897 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -818,6 +818,8 @@ struct dwc3_scratchpad_array { * @dis_u2_freeclk_exists_quirk : set if we clear u2_freeclk_exists * in GUSB2PHYCFG, specify that USB2 PHY doesn't * provide a free-running PHY clock. + * @dis_del_phy_power_chg_quirk: set if we disable delay phy power + * change quirk. * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk * @tx_de_emphasis: Tx de-emphasis value * 0 - -6dB de-emphasis @@ -963,6 +965,7 @@ struct dwc3 { unsigned dis_enblslpm_quirk:1; unsigned dis_rxdet_inp3_quirk:1; unsigned dis_u2_freeclk_exists_quirk:1; + unsigned dis_del_phy_power_chg_quirk:1; unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis:2; |