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 | |
| parent | 1920172ec80b709d017608b6a1d40b766e84c731 (diff) | |
| download | u-boot-imx-9ab4ce223c1d991e92e15c9aa0f522d61072155d.zip u-boot-imx-9ab4ce223c1d991e92e15c9aa0f522d61072155d.tar.gz u-boot-imx-9ab4ce223c1d991e92e15c9aa0f522d61072155d.tar.bz2 | |
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>
| -rw-r--r-- | README | 3 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 7 | ||||
| -rw-r--r-- | drivers/usb/host/ehci.h | 6 |
3 files changed, 15 insertions, 1 deletions
@@ -1125,6 +1125,9 @@ The following options need to be configured: May be defined to allow interrupt polling instead of using asynchronous interrupts + CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the + txfilltuning field in the EHCI controller on reset. + - USB Device: Define the below if you wish to use the USB console. Once firmware is rebuilt from a serial console issue the diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index ef5afc2..b6422d7 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; } diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 3d0ad0c..cc00ce4 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -80,7 +80,11 @@ struct ehci_hcor { uint32_t or_ctrldssegment; uint32_t or_periodiclistbase; uint32_t or_asynclistaddr; - uint32_t _reserved_[9]; + uint32_t _reserved_0_; + uint32_t or_burstsize; + uint32_t or_txfilltuning; +#define TXFIFO_THRESH(p) ((p & 0x3f) << 16) + uint32_t _reserved_1_[6]; uint32_t or_configflag; #define FLAG_CF (1 << 0) /* true: we'll support "high speed" */ uint32_t or_portsc[CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS]; |