diff options
| author | Peter Chen <peter.chen@freescale.com> | 2014-11-04 20:46:15 +0800 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-23 16:42:44 +0300 |
| commit | 9083df157ed7347177bcaa1b0fcaf516f4d54265 (patch) | |
| tree | 7675532ba8c147d44227275dfedb7a60de026ea5 /drivers/usb/host | |
| parent | 2dbf96838358ca4f5e5080d29ba4fef0c0fc013a (diff) | |
MLK-9785-1 usb: host: ehci-hcd: enable park mode
Enable park mode will improve the performance a lot at USB ethernet use
case, but a little at USB mass storage use case, and it is not harm from
the tests. Below the performance comparison at imx6sl:
USB Ethernet (Mbps)
Default Enable Park
TX 192 262
RX 262 290
USB Mass Storage (MB/s)
Read 21.8 22.9
Write 19.5 22.8
This patch is used for freescale internal.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
(cherry picked from commit b2289a78958859cff37508e4db0314463f33c2e0)
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 063064801ceb..a36fdedfe889 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -93,7 +93,7 @@ module_param (log2_irq_thresh, int, S_IRUGO); MODULE_PARM_DESC (log2_irq_thresh, "log2 IRQ latency, 1-64 microframes"); /* initial park setting: slower than hw default */ -static unsigned park = 0; +static unsigned park = 3; module_param (park, uint, S_IRUGO); MODULE_PARM_DESC (park, "park setting; 1-3 back-to-back async packets"); |