diff options
| author | Simon Glass <sjg@chromium.org> | 2012-02-27 10:52:47 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-03-29 08:12:48 +0200 |
| commit | 9ab4ce223c1d991e92e15c9aa0f522d61072155d (patch) | |
| tree | 8a43e077026f24e4a143a04446c48b216d239d92 /drivers/usb/host/ehci-hcd.c | |
| parent | 1920172ec80b709d017608b6a1d40b766e84c731 (diff) | |
| download | blackbird-obmc-uboot-9ab4ce223c1d991e92e15c9aa0f522d61072155d.tar.gz blackbird-obmc-uboot-9ab4ce223c1d991e92e15c9aa0f522d61072155d.zip | |
usb: Add support for txfifo threshold
CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the txfilltuning
field in the EHCI controller on reset.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Remy Bohmer <linux@bohmer.net>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index ef5afc22b0..b6422d7d7a 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -255,6 +255,13 @@ static int ehci_reset(void) #endif ehci_writel(reg_ptr, tmp); } + +#ifdef CONFIG_USB_EHCI_TXFIFO_THRESH + cmd = ehci_readl(&hcor->or_txfilltuning); + cmd &= ~TXFIFO_THRESH(0x3f); + cmd |= TXFIFO_THRESH(CONFIG_USB_EHCI_TXFIFO_THRESH); + ehci_writel(&hcor->or_txfilltuning, cmd); +#endif out: return ret; } |
