diff options
| author | Shengzhou Liu <Shengzhou.Liu@freescale.com> | 2012-02-25 23:56:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-28 10:53:09 -0800 |
| commit | 79857e8e7b1ba740f8025b540f1e171c9a0a5d31 (patch) | |
| tree | 727dccec14af338eac785214c7e44c16609ea3fe /drivers/usb/host/ehci-fsl.c | |
| parent | 87364624e2dd07c387b13e2ce0fda33448ef4247 (diff) | |
| download | blackbird-obmc-linux-79857e8e7b1ba740f8025b540f1e171c9a0a5d31.tar.gz blackbird-obmc-linux-79857e8e7b1ba740f8025b540f1e171c9a0a5d31.zip | |
powerpc/usb: fix usb CTRL_PHY_CLK_VALID breaks on some platform
Fix checking of CTRL_PHY_CLK_VALID bit break on some platform on which
there is not USB CTRL_PHY_CLK_VALID bit.
- P1023/P3041/P5020 etc,have this bit
- P3060/4080/PSC913x do have this bit, but not mentioned in RM.
- P1022(perhaps and other) has no this bit
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Cc: stable <stable@vger.kernel.org>
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 | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 7a15c2235758..e9d8a0cca47b 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -248,7 +248,11 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) struct usb_hcd *hcd = ehci_to_hcd(ehci); struct fsl_usb2_platform_data *pdata; void __iomem *non_ehci = hcd->regs; - u32 temp; + u32 temp, chip, rev, svr; + + svr = mfspr(SPRN_SVR); + chip = svr >> 16; + rev = (svr >> 4) & 0xf; pdata = hcd->self.controller->platform_data; @@ -274,12 +278,6 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) ehci_fsl_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; @@ -301,9 +299,15 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001); } - if (!(in_be32(non_ehci + FSL_SOC_USB_CTRL) & CTRL_PHY_CLK_VALID)) { - printk(KERN_WARNING "fsl-ehci: USB PHY clock invalid\n"); - return -ENODEV; + /* There is no CTRL_PHY_CLK_VALID bit on some platforms, e.g. P1022 */ +#define SVR_P1022_N_ID 0x80E6 +#define SVR_P1022_S_ID 0x80EE + if (chip != SVR_P1022_N_ID && chip != SVR_P1022_S_ID) { + if (!(in_be32(non_ehci + FSL_SOC_USB_CTRL) & + CTRL_PHY_CLK_VALID)) { + printk(KERN_WARNING "fsl-ehci: USB PHY clock invalid\n"); + return -ENODEV; + } } return 0; } |
