[U-Boot] [PATCH V3 14/16] imx: imx-common: power down lcdif before boot os

[Peng Fan]

Need to call lcdif_power_down to make lcdif in initial state
before kernel boot. Similar issue for uboot reset with lcdif
enabled, system will hang after serveral times resetting. Need
to let lcdif initial state to make all go well.

Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Eric Nelson <eric.nelson at boundarydevices.com>
Cc: Nikita Kiryanov <nikita at compulab.co.il>
Cc: Tim Harvey <tharvey at gateworks.com>
Cc: Fabio Estevam <fabio.estevam at freescale.com>
---

V3:
 none
V2:
 none

 arch/arm/imx-common/cpu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c
index d3d1fc5..656bb60 100644
--- a/arch/arm/imx-common/cpu.c
+++ b/arch/arm/imx-common/cpu.c
@@ -279,6 +279,9 @@ void arch_preboot_os(void)
 	/* disable video before launching O/S */
 	ipuv3_fb_shutdown();
 #endif
+#if defined(CONFIG_VIDEO_MXS)
+	lcdif_power_down();
+#endif
 }
 
 void set_chipselect_size(int const cs_size)
-- 
1.8.4