From bdee01f4928b2c1ccacbe85aef9f40c780a81d46 Mon Sep 17 00:00:00 2001
From: Titus von Boxberg <titus@elbe-informatik.de>
Date: Mon, 31 Jul 2017 18:55:40 +0200
Subject: [PATCH] added function for reset

---
 arch/arm/src/stm32f7/stm32_ltdc.c | 15 +++++++++++++++
 arch/arm/src/stm32f7/stm32_ltdc.h | 24 ++++++++++++++++++++++--
 2 files changed, 37 insertions(+), 2 deletions(-)
 mode change 100755 => 100644 arch/arm/src/stm32f7/stm32_ltdc.h

diff --git a/arch/arm/src/stm32f7/stm32_ltdc.c b/arch/arm/src/stm32f7/stm32_ltdc.c
index 3264fe8094..fdd5a6a947 100644
--- a/arch/arm/src/stm32f7/stm32_ltdc.c
+++ b/arch/arm/src/stm32f7/stm32_ltdc.c
@@ -3428,6 +3428,21 @@ FAR struct ltdc_layer_s *stm32_ltdcgetlayer(int lid)
 }
 #endif /* CONFIG_STM32F7_LTDC_INTERFACE */
 
+
+/****************************************************************************
+ * Name: stm32_ltdcreset
+ *
+ * Description:
+ *   Reset LTDC via APB2RSTR
+ *
+ *
+ ****************************************************************************/
+void   stm32_ltdcreset(void)
+{
+  *((uint32_t *)(STM32_RCC_APB2RSTR)) |= RCC_APB2RSTR_LTDCRST;
+  *((uint32_t *)(STM32_RCC_APB2RSTR)) &= ~RCC_APB2RSTR_LTDCRST;
+}
+
 /****************************************************************************
  * Name: stm32_ltdcinitialize
  *
diff --git a/arch/arm/src/stm32f7/stm32_ltdc.h b/arch/arm/src/stm32f7/stm32_ltdc.h
old mode 100755
new mode 100644
index c0e4698636..ea6821ec5b
--- a/arch/arm/src/stm32f7/stm32_ltdc.h
+++ b/arch/arm/src/stm32f7/stm32_ltdc.h
@@ -106,9 +106,29 @@ struct stm32_ltdc_s
  * include/nuttx/video/fb.h.
  */
 
-int stm32_ltdcinitialize(void);
+/****************************************************************************
+ * Name: stm32_ltdcreset
+ *
+ * Description:
+ *   Reset LTDC via APB2RSTR
+ *
+ *
+ ****************************************************************************/
+void                    stm32_ltdcreset(void);
+
+/****************************************************************************
+ * Name: stm32_ltdcinitialize
+ *
+ * Description:
+ *   Initialize the ltdc controller
+ *
+ * Return:
+ *   OK
+ *
+ ****************************************************************************/
+int                     stm32_ltdcinitialize(void);
 FAR struct fb_vtable_s *stm32_ltdcgetvplane(int vplane);
-void stm32_ltdcuninitialize(void);
+void                    stm32_ltdcuninitialize(void);
 
 /************************************************************************************
  * Name: stm32_ltdcgetlayer