1 files changed, 10 insertions, 0 deletions
diff --git a/README b/README
index 4a58590..08a6cb8 100644
--- a/README
+++ b/README
@@ -14,3 +14,13 @@ An init script can look in:
 /lib/modules/$(uname -r)/extra/mtac_mfser.ko
 
 to find the driver.
+
+
+The mtac-mfser v2.0.0 driver is based on v1.1.1,
+with the legacy kernel gpio library replaced
+with gpiod.
+
+The 1.2.0 driver was created for the new
+MTCDT-0.2, and the design was overly
+complex, also based on the legacy gpio
+library.