edid: Add some more docs in the README.

diff --git a/i2c/edid/README b/i2c/edid/README
index 8c9ec329073ff73a406f194645ea81a7793dbfe8..52bcae96ee1cebacce1ae65206573fecd3fe6dad 100644 (file)
--- a/i2c/edid/README
+++ b/i2c/edid/README
@@ -1,3 +1,7 @@
+-------------------------------------------------------------------------------
+EDID
+-------------------------------------------------------------------------------
+
 The captures in this directory were taken from a VGA cable, connected to
 various displays, as the EDID data was sent across the I2C bus.
 
@@ -5,3 +9,29 @@ To decode these, set up a protocol decoder stack like this:
 
        i2c -> ddc -> edid
 
+Details:
+https://en.wikipedia.org/wiki/Extended_display_identification_data
+https://en.wikipedia.org/wiki/Display_Data_Channel
+
+
+samsung_le46b620r3p.sr / samsung_syncmaster245b.sr
+--------------------------------------------------
+
+The logic analyzer used was a Saleae Logic at 500kHz:
+
+  Probe       I2C pins
+  --------------------
+  1 (black)   SDA
+  2 (brown)   SCL
+
+
+samsung_syncmaster203b.sr
+-------------------------
+
+The logic analyzer used was a Saleae Logic at 1MHz:
+
+  Probe       I2C pins
+  --------------------
+  1 (black)   SCL
+  2 (brown)   SDA
+