diff options
| -rw-r--r-- | drivers/usb/host/ehci-fsl.c | 4 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-hub.c | 7 | ||||
| -rw-r--r-- | drivers/usb/host/ehci.h | 12 | ||||
| -rw-r--r-- | drivers/usb/host/fsl-mph-dr-of.c | 4 | ||||
| -rw-r--r-- | include/linux/fsl_devices.h | 1 |
5 files changed, 28 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index da487fd..cf995d4 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -272,6 +272,10 @@ static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB); #endif + /* Deal with USB erratum A-005275 */ + if (pdata->has_fsl_erratum_a005275 == 1) + ehci->has_fsl_hs_errata = 1; + if ((pdata->operating_mode == FSL_USB2_DR_HOST) || (pdata->operating_mode == FSL_USB2_DR_OTG)) ehci_fsl_setup_phy(ehci, pdata->phy_mode, 0); diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index 4527b90..313a47d 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -1049,6 +1049,13 @@ static int ehci_hub_control ( */ ehci->reset_done [wIndex] = jiffies + msecs_to_jiffies (50); + + /* + * Force full-speed connect for FSL high-speed + * erratum; disable HS Chirp by setting PFSC bit + */ + if (ehci_has_fsl_hs_errata(ehci)) + temp |= (1 << PORTSC_FSL_PFSC); } ehci_writel(ehci, temp, status_reg); break; diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index b65912d..bd8adbb 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -136,6 +136,7 @@ struct ehci_hcd { /* one per controller */ /* SILICON QUIRKS */ unsigned no_selective_suspend:1; unsigned has_fsl_port_bug:1; /* FreeScale */ + unsigned has_fsl_hs_errata:1; /* Freescale HS quirk */ unsigned big_endian_mmio:1; unsigned big_endian_desc:1; unsigned big_endian_capbase:1; @@ -612,6 +613,17 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc) #define ehci_has_fsl_portno_bug(e) (0) #endif +#define PORTSC_FSL_PFSC 24 /* Port Force Full-Speed Connect */ + +#if defined(CONFIG_PPC_85xx) +/* Some Freescale processors have an erratum (USB A-005275) in which + * incoming packets get corrupted in HS mode + */ +#define ehci_has_fsl_hs_errata(e) ((e)->has_fsl_hs_errata) +#else +#define ehci_has_fsl_hs_errata(e) (0) +#endif + /* * While most USB host controllers implement their registers in * little-endian format, a minority (celleb companion chip) implement diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c index 5a42cf0..ac19ee5 100644 --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -166,6 +166,10 @@ static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) prop = of_get_property(np, "phy_type", NULL); pdata->phy_mode = determine_usb_phy(prop); + if (of_get_property(np, "fsl,usb-erratum-a005275", NULL)) + pdata->has_fsl_erratum_a005275 = 1; + else + pdata->has_fsl_erratum_a005275 = 0; for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) { if (!dev_data->drivers[i]) diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h index fffdf00..2fe0d22 100644 --- a/include/linux/fsl_devices.h +++ b/include/linux/fsl_devices.h @@ -83,6 +83,7 @@ struct fsl_usb2_platform_data { unsigned suspended:1; unsigned already_suspended:1; + unsigned has_fsl_erratum_a005275:1; /* register save area for suspend/resume */ u32 pm_command; |