[U-Boot] [PATCH v1 05/18] board: gdsys: Increase DP501 I2C retry interval

[dirk.eibach at gdsys.cc]

From: Dirk Eibach <dirk.eibach at gdsys.cc>

With Club 3D dual link adapter there are AUX-channel timeouts
when EDID is read. Increasing retry interval time to max (400us)
fixes this.

Signed-off-by: Dirk Eibach <dirk.eibach at gdsys.cc>
---

 board/gdsys/common/dp501.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/board/gdsys/common/dp501.c b/board/gdsys/common/dp501.c
index baace38..0389fd1 100644
--- a/board/gdsys/common/dp501.c
+++ b/board/gdsys/common/dp501.c
@@ -88,7 +88,8 @@ void dp501_powerup(u8 addr)
 	dp501_setbits(addr, 0x78, 0x03); /* clear all interrupt */
 	i2c_reg_write(addr, 0x75, 0xf8); /* aux channel reset */
 	i2c_reg_write(addr, 0x75, 0x00); /* clear aux channel reset */
-	i2c_reg_write(addr, 0x87, 0x70); /* set retry counter as 7 */
+	i2c_reg_write(addr, 0x87, 0x7f); /* set retry counter as 7
+					    retry interval 400us */
 
 	if (dp501_detect_cable_adapter(addr)) {
 		printf("DVI/HDMI cable adapter detected\n");
-- 
2.1.3