From a9cf2bdfe280a39b45ce485970309bc7765c7a2b Mon Sep 17 00:00:00 2001
From: Joel Bodenmann <joel.bodenmann@simulton.com>
Date: Tue, 17 Aug 2021 12:32:12 +0200
Subject: [PATCH] STM32LTDC: Enable DMA cache flushing on H7 platforms

---
 drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c b/drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c
index 6f05ff32..6f03ac32 100644
--- a/drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c
+++ b/drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c
@@ -23,6 +23,9 @@
 	#undef GDISP_SCREEN_HEIGHT
 #endif
 
+#ifndef LTDC_USE_DOUBLE_BUFFERING
+	#define LTDC_USE_DOUBLE_BUFFERING GFXOFF
+#endif
 #ifndef LTDC_USE_DMA2D
  	#define LTDC_USE_DMA2D 			GFXOFF
 #endif
@@ -38,7 +41,7 @@
 #if LTDC_USE_DMA2D
  	#include "stm32_dma2d.h"
 
-	#if defined(STM32F7) || defined(STM32F746xx)
+	#if defined(STM32F7) || defined(STM32H7) || defined(STM32F746xx)
 		#undef 	LTDC_DMA_CACHE_FLUSH
 		#define	LTDC_DMA_CACHE_FLUSH	GFXON
 	#endif