board: gdsys: Increase DP501 I2C retry interval
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@gdsys.cc>
Reviewed-by: Heiko Schocher <hs@denx.de>
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 @@
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");