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| author | Ilya Yanok <ilya.yanok@cogentembedded.com> | 2012-11-06 13:48:25 +0000 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2012-11-20 00:16:07 +0100 |
| commit | 833a53c627b839a28b5925ba283109b141f6cff0 (patch) | |
| tree | fb0f303fa61f432e1d2f27323ed2729626cb2527 /drivers/usb/musb-new/linux-compat.h | |
| parent | d2aa1154b95a211416c1511005451dfcf076dd97 (diff) | |
| download | u-boot-imx-833a53c627b839a28b5925ba283109b141f6cff0.zip u-boot-imx-833a53c627b839a28b5925ba283109b141f6cff0.tar.gz u-boot-imx-833a53c627b839a28b5925ba283109b141f6cff0.tar.bz2 | |
musb-new: am35x backend driver
Backend driver for MUSB OTG controllers found on TI AM35x.
It seems that on AM35X interrupt status registers can be updated
_before_ core registers. As we don't use true interrupts in U-Boot
and poll interrupt status registers instead this can result in
interrupt handler being called with non-updated core registers.
This confuses the code and result in hanged transfers.
Add a small delay in am35x_interrupt as a workaround.
Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
Diffstat (limited to 'drivers/usb/musb-new/linux-compat.h')
| -rw-r--r-- | drivers/usb/musb-new/linux-compat.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/musb-new/linux-compat.h b/drivers/usb/musb-new/linux-compat.h index 2bd7634..6ecdb3e 100644 --- a/drivers/usb/musb-new/linux-compat.h +++ b/drivers/usb/musb-new/linux-compat.h @@ -103,4 +103,5 @@ typedef unsigned long dmaaddr_t; #define wmb() asm volatile ("" : : : "memory") #endif +#define msleep(a) udelay(a * 1000) #endif /* __LINUX_COMPAT_H__ */ |