From dc392a6c680f1df239a61effa3b4fd8b73fa579e Mon Sep 17 00:00:00 2001
From: Titus von Boxberg <titus@elbe-informatik.de>
Date: Wed, 26 Jul 2017 07:14:23 +0200
Subject: [PATCH] enable APB2 DSI clock

---
 arch/arm/src/stm32f7/stm32f76xx77xx_rcc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/src/stm32f7/stm32f76xx77xx_rcc.c b/arch/arm/src/stm32f7/stm32f76xx77xx_rcc.c
index 682523f789f..9d2a645e0cb 100644
--- a/arch/arm/src/stm32f7/stm32f76xx77xx_rcc.c
+++ b/arch/arm/src/stm32f7/stm32f76xx77xx_rcc.c
@@ -644,6 +644,12 @@ static inline void rcc_enableapb2(void)
   regval |= RCC_APB2ENR_LTDCEN;
 #endif
 
+#ifdef CONFIG_STM32F7_DSIHOST
+  /* LTDC clock enable */
+
+  regval |= RCC_APB2ENR_DSIEN;
+#endif
+
   putreg32(regval, STM32_RCC_APB2ENR);   /* Enable peripherals */
 }