1 files changed, 7 insertions, 0 deletions
diff --git a/README b/README
index 292a6e8..0b7ada5 100644
--- a/README
+++ b/README
@@ -14,3 +14,10 @@ An init script can look in:
 /lib/modules/$(uname -r)/extra/mtac_gpiob.ko
 
 to find the driver.
+
+The mtac-mfser v2.0.0 driver is based on v1.1.4,
+with the legacy kernel gpio library replaced
+with gpiod.
+
+v1.3.0 was a stopgap before gpiod could be implemented
+in mts-io and mtac drivers.