diff options
| author | Pan Jiafei <Jiafei.Pan@freescale.com> | 2012-02-17 13:57:16 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-24 13:12:15 -0800 |
| commit | 4c954326823585bd014f36b2babd39c107c2bbb4 (patch) | |
| tree | 015e5e293dcb7b90f3d6ad7a8280f437e4892072 /drivers/usb/host/ehci-fsl.c | |
| parent | b7a205545345578712611106b371538992e142ff (diff) | |
USB: ehci-fsl: Turn on cache snooping on MPC8xxx
If a MPC8xxx was being used, 'have_sysif_regs' should be set and
it should setup cache snooping for all the 4GB space on both PPC32
and PPC64.
Signed-off-by: Pan Jiafei <Jiafei.Pan@freescale.com>
Acked-by: Li Yang <leoli@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci-fsl.c')
| -rw-r--r-- | drivers/usb/host/ehci-fsl.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 10e008a730a..cd30ea4416a 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -252,21 +252,18 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) if (pdata->have_sysif_regs) { temp = in_be32(non_ehci + FSL_SOC_USB_CTRL); out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 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 + /* + * 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); + } if ((pdata->operating_mode == FSL_USB2_DR_HOST) || (pdata->operating_mode == FSL_USB2_DR_OTG)) |