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

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[ Upstream commit 1dedbdf2bb ]

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 Chris
parent 090ec4159b
commit dd9efcb7ea
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);