openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

usb: dwc3: gadget: change HIRD threshold to 12 

First of all, that 28 value makes no sense as
HIRD threshold is a 4-bit value, second of all
it's causing issues for OMAP5.

Using 12 because commit cbc725b3 (usb: dwc3:
keep default hird threshold value as 4b1100)
had the intention of setting the maximum allowed
value of 0xc.

Also, original code has been wrong forever, so
this should be backported as far back as
possible.

Cc: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2013-01-24 11:56:11 +02:00
parent 388e5c5113
commit 1a947746db
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/usb/dwc3/gadget.c
View File

@ -2225,8 +2225,11 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~(DWC3_DCTL_HIRD_THRES_MASK | DWC3_DCTL_L1_HIBER_EN);
/* TODO: This should be configurable */
reg |= DWC3_DCTL_HIRD_THRES(28);
/*
* TODO: This should be configurable. For now using
* maximum allowed HIRD threshold value of 0b1100
*/
reg |= DWC3_DCTL_HIRD_THRES(12);
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
}