From 0b0c47c5666bcaab2738807160c10e887d420ac6 Mon Sep 17 00:00:00 2001
From: Kevin O'Connor <kevin@koconnor.net>
Date: Tue, 15 Oct 2019 17:45:48 -0400
Subject: stm32: Support PA11/PA12 pin remap on stm32f042 tsop20 chip

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
---
 src/stm32/stm32f0.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/stm32/stm32f0.c')

diff --git a/src/stm32/stm32f0.c b/src/stm32/stm32f0.c
index d3c1afb4..2c6958a9 100644
--- a/src/stm32/stm32f0.c
+++ b/src/stm32/stm32f0.c
@@ -159,4 +159,12 @@ clock_setup(void)
         hsi48_setup();
     else
         pll_setup();
+
+    // Support alternate USB pins on stm32f042
+#ifdef SYSCFG_CFGR1_PA11_PA12_RMP
+    if (CONFIG_STM32F042_USB_PIN_SWAP) {
+        enable_pclock(SYSCFG_BASE);
+        SYSCFG->CFGR1 |= SYSCFG_CFGR1_PA11_PA12_RMP;
+    }
+#endif
 }
-- 
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