diff options
| author | Roger Quadros <rogerq@ti.com> | 2013-03-13 15:14:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-15 11:54:21 -0700 |
| commit | 49f092198f4fd2c70847de7151d33df08929af51 (patch) | |
| tree | fb9a65f0feae7e37d9715ae3ea635c63a281e861 /drivers | |
| parent | a2f450ca88a394e282f09e5e16f9de60cd487f80 (diff) | |
USB: ehci-omap: Fix detection in HSIC mode
Move PHY initialization until after EHCI initialization is
complete, instead of initializing the PHYs first, shutting
them down again, and then initializing them a second time.
This fixes HSIC device detection.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/ehci-omap.c | 32 |
1 files changed, 15 insertions, 17 deletions
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index 1ba1df89a436..755b428019a1 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -90,26 +90,13 @@ static inline u32 ehci_read(void __iomem *base, u32 reg) static int omap_ehci_init(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); - struct omap_hcd *omap = (struct omap_hcd *)ehci->priv; - int rc, i; - - /* Hold PHYs in reset while initializing EHCI controller */ - for (i = 0; i < omap->nports; i++) { - if (omap->phy[i]) - usb_phy_shutdown(omap->phy[i]); - } + int rc; /* we know this is the memory we want, no need to ioremap again */ ehci->caps = hcd->regs; rc = ehci_setup(hcd); - /* Bring PHYs out of reset */ - for (i = 0; i < omap->nports; i++) { - if (omap->phy[i]) - usb_phy_init(omap->phy[i]); - } - return rc; } @@ -219,9 +206,6 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) } omap->phy[i] = phy; - usb_phy_init(omap->phy[i]); - /* bring PHY out of suspend */ - usb_phy_set_suspend(omap->phy[i], 0); } pm_runtime_enable(dev); @@ -245,6 +229,20 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) goto err_pm_runtime; } + /* + * Bring PHYs out of reset. + * Even though HSIC mode is a PHY-less mode, the reset + * line exists between the chips and can be modelled + * as a PHY device for reset control. + */ + for (i = 0; i < omap->nports; i++) { + if (!omap->phy[i]) + continue; + + usb_phy_init(omap->phy[i]); + /* bring PHY out of suspend */ + usb_phy_set_suspend(omap->phy[i], 0); + } return 0; |