From 93cf76b9d1b96f66b3e05089a758484c22880155 Mon Sep 17 00:00:00 2001
From: Karl Palsson <karlp@tweak.net.au>
Date: Tue, 20 Feb 2018 22:59:00 +0000
Subject: [PATCH] stm32l1: syscfg: add USB pullup control definition

On original stm32l1s, this internal pullup was out of spec, and not
recommended for use.  But the -A parts have this fixed, so make sure we
can use it.
---
 include/libopencm3/stm32/l1/syscfg.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/libopencm3/stm32/l1/syscfg.h b/include/libopencm3/stm32/l1/syscfg.h
index b2e4991d..d8ce0ae8 100644
--- a/include/libopencm3/stm32/l1/syscfg.h
+++ b/include/libopencm3/stm32/l1/syscfg.h
@@ -38,4 +38,7 @@
 
 #include <libopencm3/stm32/common/syscfg_common_l1f234.h>
 
+/** Enable internal USB pullup iff USB periph is not powered down */
+#define SYSCFG_PMC_USB_PU			(1<<0)
+
 #endif