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usb: chipidea: imx: enable OTG overcurrent in case USB subsystem is already started

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[ Upstream commit 1dedbdf2bbb1ede8d96f35f9845ecae179dc1988 ]

When initializing the USB subsystem before starting the kernel,
OTG overcurrent detection is disabled. In case the OTG polarity of
overcurrent is low active, the overcurrent detection is never enabled
again and events cannot be reported as expected. Because imx usb
overcurrent polarity is low active by default, only detection needs
to be enable in usbmisc init function.

Signed-off-by: Nicolas Adell <nicolas.adell@actia.fr>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Nicolas Adell 2018-08-27 15:59:56 +02:00 committed by Greg Kroah-Hartman
parent 4605e4686d
commit 7cd6a13e20
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/chipidea/usbmisc_imx.c
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@ -273,6 +273,8 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
} else if (data->oc_polarity == 1) {
/* High active */
reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
} else {
reg &= ~(MX6_BM_OVER_CUR_DIS);
}
writel(reg, usbmisc->base + data->index * 4);