usb: phy: msm: Fix PTS definitions for MSM USB controller

Fix the value used for Parallel Transceiver Select (PTS) for the MSM USB
controller.  This is a standard chipidea PORTSC definition, where
a PHY_TYPE of 10b (<<30) is ULPI and 11b (<<30) is SERIAL.
Fix the definitions and use them correctly in the driver code.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/phy/phy-msm-usb.c

@@ -287,8 +287,9 @@ static int msm_link_reset(struct msm_otg *motg)
 	if (motg->phy_number)
 		writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2);
 
+	/* put transceiver in serial mode as part of reset */
 	val = readl(USB_PORTSC) & ~PORTSC_PTS_MASK;
-	writel(val | PORTSC_PTS_ULPI, USB_PORTSC);
+	writel(val | PORTSC_PTS_SERIAL, USB_PORTSC);
 
 	return 0;
 }
@@ -308,8 +309,9 @@ static int msm_otg_reset(struct usb_phy *phy)
 	if (cnt >= LINK_RESET_TIMEOUT_USEC)
 		return -ETIMEDOUT;
 
-	/* select ULPI phy */
-	writel(0x80000000, USB_PORTSC);
+	/* select ULPI phy and clear other status/control bits in PORTSC */
+	writel(PORTSC_PTS_ULPI, USB_PORTSC);
+
 	writel(0x0, USB_AHBBURST);
 	writel(0x08, USB_AHBMODE);
 

include/linux/usb/msm_hsusb_hw.h

@@ -31,8 +31,9 @@
 #define USB_USBINTR          (MSM_USB_BASE + 0x0148)
 
 #define PORTSC_PHCD            (1 << 23) /* phy suspend mode */
-#define PORTSC_PTS_MASK         (3 << 30)
-#define PORTSC_PTS_ULPI         (3 << 30)
+#define PORTSC_PTS_MASK        (3 << 30)
+#define PORTSC_PTS_ULPI        (2 << 30)
+#define PORTSC_PTS_SERIAL      (3 << 30)
 
 #define USB_ULPI_VIEWPORT    (MSM_USB_BASE + 0x0170)
 #define ULPI_RUN              (1 << 30)