From: Nicolas Adell nicolas.adell@actia.fr
[ 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 --- drivers/usb/chipidea/usbmisc_imx.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 34ad5bf8acd8d..424ecb1f003fe 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -343,6 +343,8 @@ 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);