diff --git a/boards/nxp/frdm_mcxn947/board.c b/boards/nxp/frdm_mcxn947/board.c
index ab41600737c..a98c236f6ff 100644
--- a/boards/nxp/frdm_mcxn947/board.c
+++ b/boards/nxp/frdm_mcxn947/board.c
@@ -299,8 +299,28 @@ static int frdm_mcxn947_init(void)
 #endif
 
 #if DT_NODE_HAS_STATUS(DT_NODELABEL(lptmr0), okay)
+
+/*
+ * Clock Select Decides what input source the lptmr will clock from
+ *
+ * 0 <- 12MHz FRO
+ * 1 <- 16K FRO
+ * 2 <- 32K OSC
+ * 3 <- Output from the OSC_SYS
+ */
+#if DT_PROP(DT_NODELABEL(lptmr0), clk_source) == 0x0
+	CLOCK_SetupClockCtrl(kCLOCK_FRO12MHZ_ENA);
+#elif DT_PROP(DT_NODELABEL(lptmr0), clk_source) == 0x1
 	CLOCK_SetupClk16KClocking(kCLOCK_Clk16KToVsys);
-#endif
+#elif DT_PROP(DT_NODELABEL(lptmr0), clk_source) == 0x2
+	CLOCK_SetupOsc32KClocking(kCLOCK_Osc32kToVsys);
+#elif DT_PROP(DT_NODELABEL(lptmr0), clk_source) == 0x3
+	/* Value here should not exceed 25MHZ when using lptmr */
+	CLOCK_SetupExtClocking(MHZ(24));
+	CLOCK_SetupClockCtrl(kCLOCK_CLKIN_ENA_FM_USBH_LPT);
+#endif /* DT_PROP(DT_NODELABEL(lptmr0), clk_source) */
+
+#endif /* DT_NODE_HAS_STATUS(DT_NODELABEL(lptmr0), okay) */
 
 #if DT_NODE_HAS_STATUS(DT_NODELABEL(flexio0), okay)
 	CLOCK_SetClkDiv(kCLOCK_DivFlexioClk, 1u);
diff --git a/dts/bindings/counter/nxp,lptmr.yaml b/dts/bindings/counter/nxp,lptmr.yaml
index d44fcb5ef54..bf6252e6c84 100644
--- a/dts/bindings/counter/nxp,lptmr.yaml
+++ b/dts/bindings/counter/nxp,lptmr.yaml
@@ -20,7 +20,13 @@ properties:
   clk-source:
     type: int
     required: true
-    description: Prescaler clock source (0 to 3)
+    enum: [0, 1, 2, 3]
+    description: |
+      Selects the clock to be used by the LPMTR prescaler/glitch filter.
+      In time counter mode, this field selects the input clock to the prescaler.
+      In pulse counter mode, this field selects the input clock to the glitch filter.
+      The clock connections vary by device, see the device reference manual for
+      more details.
 
   input-pin:
     type: int