[PATCH v2 15/16] usb: dwc3: add tx demphasis quirk

[Huang Rui]

AMD NL needs to enable Tx Deemphasis quirk.

Signed-off-by: Huang Rui <ray.huang@xxxxxxx>
---
 drivers/usb/dwc3/core.c          | 3 +++
 drivers/usb/dwc3/core.h          | 2 ++
 drivers/usb/dwc3/dwc3-pci.c      | 3 ++-
 drivers/usb/dwc3/platform_data.h | 1 +
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index f3c9699..3ccfe41 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -392,6 +392,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc)
 	if (dwc->quirks & DWC3_QUIRK_RX_DETOPOLL)
 		reg |= DWC3_GUSB3PIPECTL_RX_DETOPOLL;
 
+	if (dwc->quirks & DWC3_QUIRK_TX_DEEPH)
+		reg |= DWC3_GUSB3PIPECTL_TX_DEEPH(1);
+
 	dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
 
 	mdelay(100);
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 1952759..1b137f4 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -184,6 +184,8 @@
 #define DWC3_GUSB3PIPECTL_SUSPHY	(1 << 17)
 #define DWC3_GUSB3PIPECTL_LFPSFILT	(1 << 9)
 #define DWC3_GUSB3PIPECTL_RX_DETOPOLL	(1 << 8)
+#define DWC3_GUSB3PIPECTL_TX_DEEPH_MASK	DWC3_GUSB3PIPECTL_TX_DEEPH(3)
+#define DWC3_GUSB3PIPECTL_TX_DEEPH(n)	((n) << 1)
 
 /* Global TX Fifo Size Register */
 #define DWC3_GTXFIFOSIZ_TXFDEF(n)	((n) & 0xffff)
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 6f789fd..146eb2f 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -156,7 +156,8 @@ static int dwc3_pci_probe(struct pci_dev *pci,
 			| DWC3_QUIRK_DEPP1P2P3
 			| DWC3_QUIRK_DEPOCHANGE
 			| DWC3_QUIRK_LFPSFILT
-			| DWC3_QUIRK_RX_DETOPOLL;
+			| DWC3_QUIRK_RX_DETOPOLL
+			| DWC3_QUIRK_TX_DEEPH;
 	}
 
 	ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h
index 5df3419..54f0e45 100644
--- a/drivers/usb/dwc3/platform_data.h
+++ b/drivers/usb/dwc3/platform_data.h
@@ -37,5 +37,6 @@ struct dwc3_platform_data {
 #define DWC3_QUIRK_DEPOCHANGE		(1 << 6)
 #define DWC3_QUIRK_LFPSFILT		(1 << 7)
 #define DWC3_QUIRK_RX_DETOPOLL		(1 << 8)
+#define DWC3_QUIRK_TX_DEEPH		(1 << 9)
 
 };
-- 
1.9.1

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