usb: dwc3: add disable usb2 suspend phy quirk

This patch adds disable usb2 suspend phy quirk, and some special platforms
can configure that if it is needed.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 87ffb86bc2f2..3ea55f214439 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -422,6 +422,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc)
         if (dwc->revision > DWC3_REVISION_194A)
                 reg |= DWC3_GUSB2PHYCFG_SUSPHY;
 
+        if (dwc->dis_u2_susphy_quirk && dwc->is_fpga)
+                reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
+
         dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
 
         mdelay(100);
@@ -817,6 +820,8 @@ static int dwc3_probe(struct platform_device *pdev)
                                 "snps,rx_detect_poll_quirk");
                 dwc->dis_u3_susphy_quirk = of_property_read_bool(node,
                                 "snps,dis_u3_susphy_quirk");
+                dwc->dis_u2_susphy_quirk = of_property_read_bool(node,
+                                "snps,dis_u2_susphy_quirk");
 
                 dwc->tx_de_emphasis_quirk = of_property_read_bool(node,
                                 "snps,tx_de_emphasis_quirk");
@@ -840,6 +845,7 @@ static int dwc3_probe(struct platform_device *pdev)
                 dwc->lfps_filter_quirk = pdata->lfps_filter_quirk;
                 dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk;
                 dwc->dis_u3_susphy_quirk = pdata->dis_u3_susphy_quirk;
+                dwc->dis_u2_susphy_quirk = pdata->dis_u2_susphy_quirk;
 
                 dwc->tx_de_emphasis_quirk = pdata->tx_de_emphasis_quirk;
                 if (pdata->tx_de_emphasis)