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-rw-r--r--include/dt-bindings/ata/ahci.h20
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diff --git a/include/dt-bindings/ata/ahci.h b/include/dt-bindings/ata/ahci.h
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+++ b/include/dt-bindings/ata/ahci.h
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+/* SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause */
+/*
+ * This header provides constants for most AHCI bindings.
+ */
+
+#ifndef _DT_BINDINGS_ATA_AHCI_H
+#define _DT_BINDINGS_ATA_AHCI_H
+
+/* Host Bus Adapter generic platform capabilities */
+#define HBA_SSS (1 << 27)
+#define HBA_SMPS (1 << 28)
+
+/* Host Bus Adapter port-specific platform capabilities */
+#define HBA_PORT_HPCP (1 << 18)
+#define HBA_PORT_MPSP (1 << 19)
+#define HBA_PORT_CPD (1 << 20)
+#define HBA_PORT_ESP (1 << 21)
+#define HBA_PORT_FBSCP (1 << 22)
+
+#endif