diff options
| -rw-r--r-- | drivers/usb/host/ehci-fsl.c | 10 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-q.c | 9 | ||||
| -rw-r--r-- | drivers/usb/host/ehci.h | 15 |
3 files changed, 33 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index c6012d6cd52..59f90f76ee3 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -198,6 +198,16 @@ static void mpc83xx_usb_setup(struct usb_hcd *hcd) mpc83xx_setup_phy(ehci, pdata->phy_mode, 0); if (pdata->operating_mode == FSL_USB2_MPH_HOST) { + unsigned int chip, rev, svr; + + svr = mfspr(SPRN_SVR); + chip = svr >> 16; + rev = (svr >> 4) & 0xf; + + /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */ + if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055)) + ehci->has_fsl_port_bug = 1; + if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) mpc83xx_setup_phy(ehci, pdata->phy_mode, 0); if (pdata->port_enables & FSL_USB2_PORT1_ENABLED) diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 9b13bf2fa98..6e28e593c04 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -721,7 +721,14 @@ qh_make ( info1 |= maxp << 16; info2 |= (EHCI_TUNE_MULT_TT << 30); - info2 |= urb->dev->ttport << 23; + + /* Some Freescale processors have an erratum in which the + * port number in the queue head was 0..N-1 instead of 1..N. + */ + if (ehci_has_fsl_portno_bug(ehci)) + info2 |= (urb->dev->ttport-1) << 23; + else + info2 |= urb->dev->ttport << 23; /* set the address of the TT; for TDI's integrated * root hub tt, leave it zeroed. diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 86af41c41de..679c1cdcc91 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -88,8 +88,11 @@ struct ehci_hcd { /* one per controller */ unsigned long next_statechange; u32 command; + /* SILICON QUIRKS */ unsigned is_tdi_rh_tt:1; /* TDI roothub with TT */ unsigned no_selective_suspend:1; + unsigned has_fsl_port_bug:1; /* FreeScale */ + u8 sbrn; /* packed release number */ /* irq statistics */ @@ -639,6 +642,18 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc) /*-------------------------------------------------------------------------*/ +#ifdef CONFIG_PPC_83xx +/* Some Freescale processors have an erratum in which the TT + * port number in the queue head was 0..N-1 instead of 1..N. + */ +#define ehci_has_fsl_portno_bug(e) ((e)->has_fsl_port_bug) +#else +#define ehci_has_fsl_portno_bug(e) (0) +#endif + + +/*-------------------------------------------------------------------------*/ + #ifndef DEBUG #define STUB_DEBUG_FILES #endif /* DEBUG */ |