dt-bindings: phy: cadence-torrent: Add defines for refclk driver

Add defines for refclk driver used to route the refclk out of torrent
SERDES.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210721155849.20994-6-kishon@ti.com
diff --git a/include/dt-bindings/phy/phy-cadence.h b/include/dt-bindings/phy/phy-cadence.h
new file mode 100644
index 0000000..4652bcb
--- /dev/null
+++ b/include/dt-bindings/phy/phy-cadence.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This header provides constants for Cadence SERDES.
+ */
+
+#ifndef _DT_BINDINGS_CADENCE_SERDES_H
+#define _DT_BINDINGS_CADENCE_SERDES_H
+
+/* Torrent */
+#define TORRENT_SERDES_NO_SSC		0
+#define TORRENT_SERDES_EXTERNAL_SSC	1
+#define TORRENT_SERDES_INTERNAL_SSC	2
+
+#define CDNS_TORRENT_REFCLK_DRIVER      0
+
+/* Sierra */
+#define CDNS_SIERRA_PLL_CMNLC		0
+#define CDNS_SIERRA_PLL_CMNLC1		1
+
+#endif /* _DT_BINDINGS_CADENCE_SERDES_H */