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usb: dwc3: add delay phy power change quirk

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This patch adds delay PHY power change from P0 to P1/P2/P3 when link state
changing from U0 to U1/U2/U3 respectively, 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>
This commit is contained in:
Huang Rui
2014-10-28 19:54:31 +08:00
committed by Felipe Balbi
parent a2a1d0f583
commit 41c06ffdf9
4 changed files with 12 additions and 0 deletions
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6
drivers/usb/dwc3/core.c
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@@ -383,6 +383,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc)
if (dwc->del_p1p2p3_quirk)
reg |= DWC3_GUSB3PIPECTL_DEP1P2P3_EN;
if (dwc->del_phy_power_chg_quirk)
reg |= DWC3_GUSB3PIPECTL_DEPOCHANGE;
dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
mdelay(100);
@@ -766,6 +769,8 @@ static int dwc3_probe(struct platform_device *pdev)
"snps,req_p1p2p3_quirk");
dwc->del_p1p2p3_quirk = of_property_read_bool(node,
"snps,del_p1p2p3_quirk");
dwc->del_phy_power_chg_quirk = of_property_read_bool(node,
"snps,del_phy_power_chg_quirk");
} else if (pdata) {
dwc->maximum_speed = pdata->maximum_speed;
dwc->has_lpm_erratum = pdata->has_lpm_erratum;
@@ -780,6 +785,7 @@ static int dwc3_probe(struct platform_device *pdev)
dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk;
dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk;
dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk;
dwc->del_phy_power_chg_quirk = pdata->del_phy_power_chg_quirk;
}
/* default to superspeed if no maximum_speed passed */