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board: gdsys: Configure bridge on DP501 to support DDC only

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The I2C bridge on DP501 supports EDID, MCCS and HDCP by default.
Allow EDID only to avoid I2C address conflicts.

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
This commit is contained in:
Dirk Eibach
2014-07-03 09:28:21 +02:00
committed by Tom Rini
parent cccd4f407e
commit 5568fb4402
2 changed files with 5 additions and 3 deletions
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board/gdsys/common/dp501.c
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@@ -54,6 +54,7 @@ static void dp501_link_training(u8 addr)
void dp501_powerup(u8 addr)
{
dp501_clrbits(addr, 0x0a, 0x30); /* power on encoder */
dp501_setbits(addr, 0x0a, 0x0e); /* block HDCP and MCCS on I2C bride*/
i2c_reg_write(addr, 0x27, 0x30); /* Hardware auto detect DVO timing */
dp501_setbits(addr, 0x72, 0x80); /* DPCD read enable */
dp501_setbits(addr, 0x30, 0x20); /* RS polynomial select */