From 2034c0a2e364404216c8cadeb661fbc72647d16a Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Wed, 3 Jul 2019 00:59:56 +1000
Subject: [PATCH] stm32/qspi: Force a reset of the QSPI peripheral when
 initialising it.

To ensure it is in a known state on start up.
---
 ports/stm32/qspi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ports/stm32/qspi.c b/ports/stm32/qspi.c
index 8ed3a17dd5..282759967e 100644
--- a/ports/stm32/qspi.c
+++ b/ports/stm32/qspi.c
@@ -88,6 +88,8 @@ void qspi_init(void) {
     // Bring up the QSPI peripheral
 
     __HAL_RCC_QSPI_CLK_ENABLE();
+    __HAL_RCC_QSPI_FORCE_RESET();
+    __HAL_RCC_QSPI_RELEASE_RESET();
 
     QUADSPI->CR =
         (MICROPY_HW_QSPI_PRESCALER - 1) << QUADSPI_CR_PRESCALER_Pos