diff --git a/README.md b/README.md
index c65db87..fde4fd0 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,9 @@ This crate is a working-in-progress and not ready for use.
   - [x] PLL setting (only PLL0 is supported, since others might be unsafe)
   - [x] GPIO, Flex, Input, Output
   - [x] RTT support (defmt, defmt-rtt)
-  - [ ] UART support
+  - [x] UART support
     - [x] blocking TX
+    - [x] blocking RX
 
 - MCUs
   - HPM5300 - currently it's the only supported series
diff --git a/src/uart/mod.rs b/src/uart/mod.rs
index d2e13cc..88f4d3c 100644
--- a/src/uart/mod.rs
+++ b/src/uart/mod.rs
@@ -710,15 +710,10 @@ fn configure(
     if enable_rx {
         r.idle_cfg().modify(|w| {
             w.set_rxen(true);
+            w.set_rx_idle_thr(10); // 10bit
         });
     }
 
-    /*
-    r.mcr().modify(|w| {
-        w.set_loop_(false);
-    });
-    */
-
     Ok(())
 }