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

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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1
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 */

7
include/configs/controlcenterd.h
View File

@ -199,9 +199,10 @@
#define CONFIG_SYS_FSL_I2C2_SPEED 400000
#define CONFIG_SYS_FSL_I2C2_SLAVE 0x7F
#define CONFIG_SYS_FSL_I2C2_OFFSET 0x3100
/* Probing DP501 I2C-Bridge will hang */
#define CONFIG_SYS_I2C_NOPROBES { {0, 0x30}, {0, 0x37}, {0, 0x3a}, \
{0, 0x3b}, {0, 0x50} }
#ifndef CONFIG_TRAILBLAZER
#define CONFIG_CMD_I2C
#endif
#define CONFIG_PCA9698 /* NXP PCA9698 */