[PATCH 1/2] usb: imx: fix overcurrent polarity handling on i.MX7
From: Michael Grzeschik <hidden>
Date: 2021-02-02 18:54:33
Subsystem:
the rest, usb subsystem · Maintainers:
Linus Torvalds, Greg Kroah-Hartman
The reference manual says the overcurrent polarity is changed to low with the bit set. We fix that according to the description. Signed-off-by: Michael Grzeschik <redacted> --- drivers/usb/imx/imx-usb-misc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/imx/imx-usb-misc.c b/drivers/usb/imx/imx-usb-misc.c
index b663d073aa..660ebecd78 100644
--- a/drivers/usb/imx/imx-usb-misc.c
+++ b/drivers/usb/imx/imx-usb-misc.c@@ -353,7 +353,7 @@ static __maybe_unused struct imx_usb_misc_data mx5_data = { #define MX6_USB_CTRL(n) ((n) * 4) #define MX6_USB_CTRL_OVER_CUR_DIS (1 << 7) -#define MX6_USB_CTRL_OVER_CUR_ACT_HIGH (1 << 8) +#define MX6_USB_CTRL_OVER_CUR_ACT_LOW (1 << 8) #define MX6_USB_CTRL_PWR_POLARITY (1 << 9) static void mx6_hsic_pullup(unsigned long reg, int on)
@@ -453,9 +453,9 @@ static int usbmisc_imx7d_init(void __iomem *base, int port, } else { reg &= ~MX6_USB_CTRL_OVER_CUR_DIS; if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW) - reg &= ~MX6_USB_CTRL_OVER_CUR_ACT_HIGH; + reg |= MX6_USB_CTRL_OVER_CUR_ACT_LOW; else - reg |= MX6_USB_CTRL_OVER_CUR_ACT_HIGH; + reg &= ~MX6_USB_CTRL_OVER_CUR_ACT_LOW; } if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH) reg |= MX6_USB_CTRL_PWR_POLARITY;
--
2.30.0
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