diff options
| author | Tim Bird <tbird20d@gmail.com> | 2014-04-28 15:34:19 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-04-30 18:29:40 +0200 |
| commit | 9f27984b9e098ce0a35b210ec0315c76108494e4 (patch) | |
| tree | bee39ae23a360c05059d13e8edaee6526d28ac38 /drivers/usb/phy/phy-msm-usb.c | |
| parent | usb: phy: msm: Correct USB PHY Reset sequence for newer platform (diff) | |
| download | linux-9f27984b9e098ce0a35b210ec0315c76108494e4.tar.xz linux-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>
Diffstat (limited to 'drivers/usb/phy/phy-msm-usb.c')
| -rw-r--r-- | drivers/usb/phy/phy-msm-usb.c | 8 |
1 files changed, 5 insertions, 3 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); |