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drivers: usb stm32H5 and stm32U5 have an independent power supply

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The stm32H5 mcu has an independent USB supply to be enabled
at init with LL_PWR_EnableVDDUSB function like the stm32U5 serie.
Both series have PWR_USBSCR_USB33SV bit in their USBSCR POWER reg.
and other series all have PWR_CR2_USV bit in their CR2 POWER reg.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2023-12-07 12:35:49 +01:00 committed by Fabio Baltieri
parent 98336b2811
commit 6e678e3bae
2 changed files with 13 additions and 7 deletions
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11
drivers/usb/device/usb_dc_stm32.c
View file

@ -217,10 +217,13 @@ static int usb_dc_stm32_clock_enable(void)
return -ENODEV;
}
#ifdef CONFIG_SOC_SERIES_STM32U5X
/* VDDUSB independent USB supply (PWR clock is on) */
#ifdef PWR_USBSCR_USB33SV
/*
* VDDUSB independent USB supply (PWR clock is on)
* with LL_PWR_EnableVDDUSB function (higher case)
*/
LL_PWR_EnableVDDUSB();
#endif /* CONFIG_SOC_SERIES_STM32U5X */
#endif /* PWR_USBSCR_USB33SV */
if (DT_INST_NUM_CLOCKS(0) > 1) {
if (clock_control_configure(clk, (clock_control_subsys_t)&pclken[1],
@ -508,7 +511,7 @@ int usb_dc_attach(void)
/*
* Required for at least STM32L4 devices as they electrically
* isolate USB features from VDDUSB. It must be enabled before
* isolate USB features from VddUSB. It must be enabled before
* USB can function. Refer to section 5.1.3 in DM00083560 or
* DM00310109.
*/

9
drivers/usb/udc/udc_stm32.c
View file

@ -914,10 +914,13 @@ static int priv_clock_enable(void)
return -ENODEV;
}
#ifdef CONFIG_SOC_SERIES_STM32U5X
/* VDDUSB independent USB supply (PWR clock is on) */
#if defined(PWR_USBSCR_USB33SV)
/*
* VDDUSB independent USB supply (PWR clock is on)
* with LL_PWR_EnableVDDUSB function (higher case)
*/
LL_PWR_EnableVDDUSB();
#endif /* CONFIG_SOC_SERIES_STM32U5X */
#endif /* PWR_USBSCR_USB33SV */
#if defined(CONFIG_SOC_SERIES_STM32H7X)
LL_PWR_EnableUSBVoltageDetector();