From eaed2518fab968362d15745c4f1f3d39bd60ad38 Mon Sep 17 00:00:00 2001
From: iabdalkader <i.abdalkader@gmail.com>
Date: Thu, 12 Sep 2024 09:34:01 +0200
Subject: [PATCH] stm32/main: Disable D-cache when debugging N6.

See ST Errata ES0620 - Rev 0.2 section 2.1.2.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
---
 ports/stm32/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ports/stm32/main.c b/ports/stm32/main.c
index aea1953fd6..137e132817 100644
--- a/ports/stm32/main.c
+++ b/ports/stm32/main.c
@@ -374,7 +374,11 @@ void stm32_main(uint32_t reset_mode) {
     #endif
 
     SCB_EnableICache();
+    #if defined(STM32N6) && !defined(NDEBUG)
+    // Don't enable D-cache on N6 when debugging; see ST Errata ES0620 - Rev 0.2 section 2.1.2.
+    #else
     SCB_EnableDCache();
+    #endif
 
     #elif defined(STM32H5)