nitrogen6x: display use I2C detect for HDMI

The HPD pin and RX_SENSE registers have proven to be less reliable
than using I2C on the EDID pins for detection of an HDMI monitor.
In particular, when the HDMI output is reset through a "reboot"
cycle, the detect_hdmi() routine often bounces, resulting in
a failure to detect a connected monitor.

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>

diff --git a/board/boundary/nitrogen6x/nitrogen6x.c b/board/boundary/nitrogen6x/nitrogen6x.c
index a82ec45b0ff76c1d18c02ea53e6a3abf6bcaaef5..2762fcffae11e4256ae870a74a237204d2c76df7 100644 (file)
--- a/board/boundary/nitrogen6x/nitrogen6x.c
+++ b/board/boundary/nitrogen6x/nitrogen6x.c
@@ -494,10 +494,10 @@ static void enable_rgb(struct display_info_t const *dev)
 }
 
 struct display_info_t const displays[] = {{
-       .bus    = -1,
-       .addr   = 0,
+       .bus    = 1,
+       .addr   = 0x50,
        .pixfmt = IPU_PIX_FMT_RGB24,
-       .detect = detect_hdmi,
+       .detect = detect_i2c,
        .enable = do_enable_hdmi,
        .mode   = {
                .name           = "HDMI",