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usb: mtu3: power down device IP by default

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Power down device IP by default until @udc_start is called.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1623139069-8173-6-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2021-06-08 15:57:31 +08:00 committed by Greg Kroah-Hartman
parent 5f4dee73a4
commit b057da6d54
1 changed files with 3 additions and 4 deletions
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7
drivers/usb/mtu3/mtu3_core.c
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@ -921,16 +921,15 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb)
device_init_wakeup(dev, true);
/* power down device IP for power saving by default */
mtu3_stop(mtu);
ret = mtu3_gadget_setup(mtu);
if (ret) {
dev_err(dev, "mtu3 gadget init failed:%d\n", ret);
goto gadget_err;
}
/* init as host mode, power down device IP for power saving */
if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG)
mtu3_stop(mtu);
ssusb_dev_debugfs_init(ssusb);
dev_dbg(dev, " %s() done...\n", __func__);