Merge commit '53633a893a06bd5a0c807287d9cc29337806eaf7' as 'dts/upstream'
diff --git a/dts/upstream/include/dt-bindings/clock/sifive-fu540-prci.h b/dts/upstream/include/dt-bindings/clock/sifive-fu540-prci.h
new file mode 100644
index 0000000..5af372e
--- /dev/null
+++ b/dts/upstream/include/dt-bindings/clock/sifive-fu540-prci.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
+/*
+ * Copyright (C) 2018-2019 SiFive, Inc.
+ * Wesley Terpstra
+ * Paul Walmsley
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_SIFIVE_FU540_PRCI_H
+#define __DT_BINDINGS_CLOCK_SIFIVE_FU540_PRCI_H
+
+/* Clock indexes for use by Device Tree data and the PRCI driver */
+
+#define FU540_PRCI_CLK_COREPLL 0
+#define FU540_PRCI_CLK_DDRPLL 1
+#define FU540_PRCI_CLK_GEMGXLPLL 2
+#define FU540_PRCI_CLK_TLCLK 3
+
+#endif