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usb: cdns3: add power lost support for system resume

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If the controller lost its power during the system suspend, we need
to do all initialiation operations.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Frank Li <frank.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@kernel.org>
This commit is contained in:
Frank Li
2021-02-18 16:51:08 -06:00
committed by Peter Chen
parent 14d34d2dbb
commit 2cf2581cd2
5 changed files with 68 additions and 3 deletions
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2
drivers/usb/cdns3/cdns3-gadget.c
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@@ -3304,6 +3304,8 @@ static int cdns3_gadget_resume(struct cdns *cdns, bool hibernated)
return 0;
cdns3_gadget_config(priv_dev);
if (hibernated)
writel(USB_CONF_DEVEN, &priv_dev->regs->usb_conf);
return 0;
}