From 337b99002a4481b2dd3f603cd59afa2d48a7513c Mon Sep 17 00:00:00 2001
From: Alexandre Abadie <alexandre.abadie@inria.fr>
Date: Wed, 1 Dec 2021 09:09:35 +0100
Subject: [PATCH] cpu/stm32/stmclk: enable 48MHz when usbdev is used

---
 cpu/stm32/stmclk/stmclk_l4wx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpu/stm32/stmclk/stmclk_l4wx.c b/cpu/stm32/stmclk/stmclk_l4wx.c
index 811ee63167..ab224b082c 100644
--- a/cpu/stm32/stmclk/stmclk_l4wx.c
+++ b/cpu/stm32/stmclk/stmclk_l4wx.c
@@ -347,8 +347,8 @@
 #define CLOCK48MHZ_SELECT           (0)
 #endif
 
-/* Only periph_hwrng requires 48MHz for the moment */
-#if IS_USED(MODULE_PERIPH_HWRNG)
+/* periph_hwrng and periph_usbdev require a 48MHz clock source */
+#if IS_USED(MODULE_PERIPH_HWRNG) || IS_USED(MODULE_PERIPH_USBDEV)
 #if !IS_ACTIVE(CLOCK48MHZ_USE_PLLQ) && !IS_ACTIVE(CLOCK48MHZ_USE_MSI)
 #error "No 48MHz clock source available, HWRNG cannot work"
 #endif