On 06/14/2012 12:29 PM, Marek Vasut wrote: > Dear Tom Rini, > >> The USB spec says that 32 bytes is the minimum required alignment. >> However on some platforms we have a larger minimum requirement for cache >> coherency. In those cases, use that value rather than the USB spec >> minimum. >> >> Cc: Marek Vasut <ma...@denx.de> >> Signed-off-by: Tom Rini <tr...@ti.com> >> --- >> drivers/usb/host/ehci-hcd.c | 23 +++++++++++++++++------ >> 1 file changed, 17 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c >> index 04300be..45725f5 100644 >> --- a/drivers/usb/host/ehci-hcd.c >> +++ b/drivers/usb/host/ehci-hcd.c >> @@ -29,12 +29,23 @@ >> >> #include "ehci.h" >> >> -int rootdev; >> -struct ehci_hccr *hccr; /* R/O registers, not need for volatile */ >> -volatile struct ehci_hcor *hcor; >> +/* >> + * The EHCI spec says that we must align to at least 32 bytes. However, >> + * some platforms require larger alignment. >> + */ >> +#if ARCH_DMA_MINALIGN > 32 >> +#define USB_DMA_MINALIGN ARCH_DMA_MINALIGN >> +#else >> +#define USB_DMA_MINALIGN 32 >> +#endif > > Don't we have some common header for these?
For ECHI and musb? I did not spot one unless we go all the way up to common.h or similar. -- Tom _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
