[U-Boot] [PATCH v4 08/13] board: gdsys: Configure bridge on DP501 to support DDC only

dirk.eibach at gdsys.cc
2014-07-03T07:28:21Z

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

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>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None

board/gdsys/common/dp501.c | 1 +
include/configs/controlcenterd.h | 7 ++++---
2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/board/gdsys/common/dp501.c b/board/gdsys/common/dp501.c
index e00e589..7958bae 100644
--- a/board/gdsys/common/dp501.c
+++ b/board/gdsys/common/dp501.c
@@ -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 */
diff --git a/include/configs/controlcenterd.h b/include/configs/controlcenterd.h
index 868813f..ec3145f 100644
--- a/include/configs/controlcenterd.h
+++ b/include/configs/controlcenterd.h
@@ -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 */

--
1.8.3