diff options
| -rw-r--r-- | drivers/usb/host/ehci-fsl.c | 13 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-fsl.h | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index a52480505f78..c7a7c590426f 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -193,6 +193,19 @@ static void mpc83xx_usb_setup(struct usb_hcd *hcd) out_be32(non_ehci + FSL_SOC_USB_CTRL, 0x00000004); out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b); +#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE) + /* + * Turn on cache snooping hardware, since some PowerPC platforms + * wholly rely on hardware to deal with cache coherent + */ + + /* Setup Snooping for all the 4GB space */ + /* SNOOP1 starts from 0x0, size 2G */ + out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB); + /* SNOOP2 starts from 0x80000000, size 2G */ + out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB); +#endif + if (pdata->operating_mode == FSL_USB2_DR_HOST) mpc83xx_setup_phy(ehci, pdata->phy_mode, 0); diff --git a/drivers/usb/host/ehci-fsl.h b/drivers/usb/host/ehci-fsl.h index f28736a917e4..b5e59db53347 100644 --- a/drivers/usb/host/ehci-fsl.h +++ b/drivers/usb/host/ehci-fsl.h @@ -34,4 +34,5 @@ #define FSL_SOC_USB_PRICTRL 0x40c /* NOTE: big-endian */ #define FSL_SOC_USB_SICTRL 0x410 /* NOTE: big-endian */ #define FSL_SOC_USB_CTRL 0x500 /* NOTE: big-endian */ +#define SNOOP_SIZE_2GB 0x1e #endif /* _EHCI_FSL_H */ |