From 7814abc032ef381cf89004daf0f2ae3123550026 Mon Sep 17 00:00:00 2001
From: Anatolij Gustschin <agust@denx.de>
Date: Sun, 26 Jan 2020 00:35:59 +0100
Subject: [PATCH] imx: mx6ul_14x14_evk: turn of backlight and LCD before
booting OS
This should help keeping the screen black when booting the kernel.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Reported-by: Fabio Estevam <festevam@gmail.com>
Tested-by: Fabio Estevam <festevam@gmail.com>
---
board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
index 086e0e6739..9cb5b14f13 100644
--- a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
+++ b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
@@ -384,6 +384,15 @@ int checkboard(void)
return 0;
}
+/*
+ * Backlight off and reset LCD before OS handover
+ */
+void board_preboot_os(void)
+{
+ gpio_set_value(IMX_GPIO_NR(1, 8), 0);
+ gpio_set_value(IMX_GPIO_NR(5, 9), 0);
+}
+
#ifdef CONFIG_SPL_BUILD
#include <linux/libfdt.h>
#include <spl.h>
--
2.39.5