brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-06-09 23:36:03 +09:00
Code Issues Projects Releases Wiki Activity

usb: dwc3: switch to peripheral mode when exiting

Browse Source 
This allow the phy to enter idle and then suspend.
the K2 platforms require the PHY to be suspended before the USB domain
clock can be turned off.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
This commit is contained in:
Jean-Jacques Hiblot 2019-09-11 11:33:45 +02:00 committed by Marek Vasut
parent a8973731a4
commit bbe3d4a6c1
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/usb/dwc3/core.c
View File

@ -581,6 +581,12 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
return 0;
}
static void dwc3_gadget_run(struct dwc3 *dwc)
{
dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_RUN_STOP);
mdelay(100);
}
static void dwc3_core_exit_mode(struct dwc3 *dwc)
{
switch (dwc->dr_mode) {
@ -598,6 +604,13 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc)
/* do nothing */
break;
}
/*
* switch back to peripheral mode
* This enables the phy to enter idle and then, if enabled, suspend.
*/
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
dwc3_gadget_run(dwc);
}
#define DWC3_ALIGN_MASK (16 - 1)