diff --git a/[refs] b/[refs]
index 2f06901b64fc..51a0c180ec84 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 18cbf973a9a77e0b6128d4c187f337f4dc94df90
+refs/heads/master: c59515a879d69fd8fc25c8d7eea6aa03ceb6983d
diff --git a/trunk/drivers/staging/comedi/comedi.h b/trunk/drivers/staging/comedi/comedi.h
index e0e822d56df0..3cbd2cda1f7c 100644
--- a/trunk/drivers/staging/comedi/comedi.h
+++ b/trunk/drivers/staging/comedi/comedi.h
@@ -896,6 +896,14 @@ enum amplc_dio_clock_source {
 	AMPLC_DIO_CLK_20MHZ	/* 20 MHz internal clock */
 };
 
+/* Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
+ * timer subdevice on some Amplicon DIO PCIe boards (amplc_dio200 driver). */
+enum amplc_dio_ts_clock_src {
+	AMPLC_DIO_TS_CLK_1GHZ,	/* 1 ns period with 20 ns granularity */
+	AMPLC_DIO_TS_CLK_1MHZ,	/* 1 us period */
+	AMPLC_DIO_TS_CLK_1KHZ	/* 1 ms period */
+};
+
 /* Values for setting a gate source with INSN_CONFIG_SET_GATE_SRC for
  * 8254 counter subdevices on Amplicon DIO boards (amplc_dio200 driver). */
 enum amplc_dio_gate_source {