drivers: usb: device: stm32: fix N6 power-up sequence logic

mathieuchopstm · jhedberg · commit 26f5469068ba · 2025-10-21T17:21:18.000+03:00
Actually do what the comment says and wait for Vdd33USB to be ready,
instead of waiting for the opposite.

Signed-off-by: Mathieu Choplain &lt;mathieu.choplain-ext@st.com&gt;
diff --git a/drivers/usb/device/usb_dc_stm32.c b/drivers/usb/device/usb_dc_stm32.c
@@ -349,7 +349,7 @@ static int usb_dc_stm32_phy_specific_clock_enable(const struct device *const clk
 #elif DT_HAS_COMPAT_STATUS_OKAY(st_stm32n6_otghs)
 	/* Enable Vdd USB voltage monitoring */
 	LL_PWR_EnableVddUSBMonitoring();
-	while (__HAL_PWR_GET_FLAG(PWR_FLAG_USB33RDY)) {
+	while (!__HAL_PWR_GET_FLAG(PWR_FLAG_USB33RDY)) {
 		/* Wait for VDD33USB ready */
 	}
 	/* Enable VDDUSB */

Original file line number	Diff line number	Diff line change
`@@ -349,7 +349,7 @@ static int usb_dc_stm32_phy_specific_clock_enable(const struct device *const clk`
`349`	`349`	`#elif DT_HAS_COMPAT_STATUS_OKAY(st_stm32n6_otghs)`
`350`	`350`	`/* Enable Vdd USB voltage monitoring */`
`351`	`351`	`LL_PWR_EnableVddUSBMonitoring();`
`352`		`- while (__HAL_PWR_GET_FLAG(PWR_FLAG_USB33RDY)) {`
	`352`	`+ while (!__HAL_PWR_GET_FLAG(PWR_FLAG_USB33RDY)) {`
`353`	`353`	`/* Wait for VDD33USB ready */`
`354`	`354`	`}`
`355`	`355`	`/* Enable VDDUSB */`