[U-Boot] [PATCH 1/1] ipu common: reset ipuv3 correctly

[Liu Ying]

From: Liu Ying <Ying.Liu at freescale.com>

This patch checks self-clear sw_ipu_rst bit in
SCR register of SRC controller to be cleared
after setting it to high to reset IPUv3. This
makes sure that IPUv3 finishes sofware reset.

Signed-off-by: Liu Ying <Ying.Liu at freescale.com>
---
 drivers/video/ipu_common.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/video/ipu_common.c b/drivers/video/ipu_common.c
index 2020da9..03b7382 100644
--- a/drivers/video/ipu_common.c
+++ b/drivers/video/ipu_common.c
@@ -397,6 +397,9 @@ void ipu_reset(void)
 	value = __raw_readl(reg);
 	value = value | SW_IPU_RST;
 	__raw_writel(value, reg);
+
+	while (__raw_readl(reg) & SW_IPU_RST)
+		;
 }
 
 /*
-- 
1.7.1