diff options
| author | Dirk Eibach <dirk.eibach@gdsys.cc> | 2015-10-28 11:46:26 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-11-12 15:59:03 -0500 |
| commit | 2302fd32a5c2015be204e71737481322fe7b5f3a (patch) | |
| tree | a3a0918b327cedf9b2817b94fc77e3f6797ccca0 | |
| parent | 0caad193cdb051b67b01d1f87df01e3c74acdb04 (diff) | |
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>
| -rw-r--r-- | board/gdsys/common/dp501.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/board/gdsys/common/dp501.c b/board/gdsys/common/dp501.c index baace38ad6..0389fd1750 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"); |