diff --git a/arch/arm/src/imxrt/chip/imxrt106x_pinmux.h b/arch/arm/src/imxrt/chip/imxrt106x_pinmux.h
index e98f99acbb..2a45b60d94 100644
--- a/arch/arm/src/imxrt/chip/imxrt106x_pinmux.h
+++ b/arch/arm/src/imxrt/chip/imxrt106x_pinmux.h
@@ -234,6 +234,13 @@
 #define GPIO_FLEXCAN2_TX_3             (GPIO_PERIPH | GPIO_ALT6 | GPIO_PADMUX(IMXRT_PADMUX_GPIO_AD_B0_14_INDEX))
 #define GPIO_FLEXCAN2_TX_4             (GPIO_PERIPH | GPIO_ALT6 | GPIO_PADMUX(IMXRT_PADMUX_GPIO_B1_08_INDEX))
 
+#define GPIO_FLEXCAN3_RX_1             (GPIO_PERIPH | GPIO_ALT8 | GPIO_PADMUX(IMXRT_PADMUX_GPIO_AD_B0_11_INDEX))
+#define GPIO_FLEXCAN3_RX_2             (GPIO_PERIPH | GPIO_ALT8 | GPIO_PADMUX(IMXRT_PADMUX_GPIO_AD_B0_15_INDEX))
+#define GPIO_FLEXCAN3_RX_3             (GPIO_PERIPH | GPIO_ALT9 | GPIO_PADMUX(IMXRT_PADMUX_GPIO_EMC_37_INDEX))
+#define GPIO_FLEXCAN3_TX_1             (GPIO_PERIPH | GPIO_ALT8 | GPIO_PADMUX(IMXRT_PADMUX_GPIO_AD_B0_10_INDEX))
+#define GPIO_FLEXCAN3_TX_2             (GPIO_PERIPH | GPIO_ALT8 | GPIO_PADMUX(IMXRT_PADMUX_GPIO_AD_B0_14_INDEX))
+#define GPIO_FLEXCAN3_TX_3             (GPIO_PERIPH | GPIO_ALT9 | GPIO_PADMUX(IMXRT_PADMUX_GPIO_EMC_36_INDEX))
+
 /* Flexible I/O (FlexIO) */
 
 #define GPIO_FLEXIO1_FLEXIO00          (GPIO_PERIPH | GPIO_ALT4 | GPIO_PADMUX(IMXRT_PADMUX_GPIO_EMC_00_INDEX))
diff --git a/sched/pthread/pthread_keydelete.c b/sched/pthread/pthread_keydelete.c
index 7aa9f30827..0aa8361782 100644
--- a/sched/pthread/pthread_keydelete.c
+++ b/sched/pthread/pthread_keydelete.c
@@ -56,17 +56,15 @@
  * Name: pthread_key_delete
  *
  * Description:
- *   This POSIX function should delete a thread-specific data key
- *   previously returned by pthread_key_create().  However, this function
- *   does nothing in the present implementation.
+ *   This POSIX function deletes a thread-specific data key
+ *   previously returned by pthread_key_create().
  *
  * Input Parameters:
  *   key - the key to delete
  *
  * Returned Value:
- *   Always returns ENOSYS.
- *
- * Assumptions:
+ *   Returns zero (OK) on success.  EINVAL may be returned if an invalid
+ *   key is received.
  *
  * POSIX Compatibility:
  *