rtio_clocking: additional warnings, fixes

src/runtime/src/rtio_clocking.rs

@@ -55,9 +55,13 @@ fn init_rtio(timer: &mut GlobalTimer, _clk: RtioClock) {
             info!("Using bypassed external clock");
             1
         },
-        x => {
+        RtioClock::Int_125 => {
             info!("Using internal RTIO clock");
             0
+        },
+        _ => {
+            warn!("rtio_clock setting '{:?}' is not supported. Using default internal RTIO clock instead", _clk);
+            0
         }
     };
 
@@ -113,7 +117,7 @@ fn setup_si5324(i2c: &mut I2c, timer: &mut GlobalTimer, clk: RtioClock) {
             }
         }
         _ => { // same setting  as Int_125, but fallback to default
-            warn!("rtio_clock setting '{:x}' is unsupported. Falling back to default internal 125MHz RTIO clock.");
+            warn!("rtio_clock setting '{:?}' is unsupported. Falling back to default internal 125MHz RTIO clock.", clk);
             si5324::FrequencySettings {
                 n1_hs  : 10,
                 nc1_ls : 4,