Per dt-schema, the modulation methods are: down-spread(3), up-spread(2),
center-spread(1), no-spread(0). So define them in dt-bindings to avoid
write the magic number in device tree.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 include/dt-bindings/clock/clock.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/dt-bindings/clock/clock.h b/include/dt-bindings/clock/clock.h
new file mode 100644
index 0000000000000000000000000000000000000000..155e2653a120bf10747bd7f4d47f25e0493e0464
--- /dev/null
+++ b/include/dt-bindings/clock/clock.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
+/*
+ * Copyright 2025 NXP
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_H
+#define __DT_BINDINGS_CLOCK_H
+
+#define CLK_SSC_NO_SPREAD	0
+#define CLK_SSC_CENTER_SPREAD	1
+#define CLK_SSC_UP_SPREAD	2
+#define CLK_SSC_DOWN_SPREAD	3
+
+#endif	/* __DT_BINDINGS_CLOCK_H */

-- 
2.37.1

On Fri, Sep 12, 2025 at 11:35:50AM +0800, Peng Fan wrote:
> Per dt-schema, the modulation methods are: down-spread(3), up-spread(2),
> center-spread(1), no-spread(0). So define them in dt-bindings to avoid
> write the magic number in device tree.
> 
> Signed-off-by: Peng Fan <peng.fan@nxp.com>

Reviewed-by: Brian Masney <bmasney@redhat.com>