diff options
| author |   Tim Bird <tbird20d@gmail.com> | 2014-04-28 16:34:19 +0300 |
|---|---|---|
| committer |   Felipe Balbi <balbi@ti.com> | 2014-04-30 11:29:40 -0500 |
| commit | 9f27984b9e098ce0a35b210ec0315c76108494e4 (patch) | |
| tree | bee39ae23a360c05059d13e8edaee6526d28ac38 | |
| parent | usb: phy: msm: Correct USB PHY Reset sequence for newer platform (diff) | |
| download | linux-dev-9f27984b9e098ce0a35b210ec0315c76108494e4.tar.xz linux-dev-9f27984b9e098ce0a35b210ec0315c76108494e4.zip | |
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>
| -rw-r--r-- | drivers/usb/phy/phy-msm-usb.c | 8 | ||||
| -rw-r--r-- | include/linux/usb/msm_hsusb_hw.h | 5 |
2 files changed, 8 insertions, 5 deletions
diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c index bb339963f8bb..db8d96377620 100644 --- a/drivers/usb/phy/phy-msm-usb.c +++ b/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); diff --git a/include/linux/usb/msm_hsusb_hw.h b/include/linux/usb/msm_hsusb_hw.h index 575c74397e52..98d3dd8976e5 100644 --- a/include/linux/usb/msm_hsusb_hw.h +++ b/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) |