1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/quirks.h b/drivers/firmware/arm_scmi/quirks.h
new file mode 100644
index 000000000000..a71fde85a527
--- /dev/null
+++ b/drivers/firmware/arm_scmi/quirks.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * System Control and Management Interface (SCMI) Message Protocol Quirks
+ *
+ * Copyright (C) 2025 ARM Ltd.
+ */
+#ifndef _SCMI_QUIRKS_H
+#define _SCMI_QUIRKS_H
+
+#include <linux/static_key.h>
+#include <linux/types.h>
+
+#ifdef CONFIG_ARM_SCMI_QUIRKS
+
+#define DECLARE_SCMI_QUIRK(_qn)						\
+	DECLARE_STATIC_KEY_FALSE(scmi_quirk_ ## _qn)
+
+/*
+ * A helper to associate the actual code snippet to use as a quirk
+ * named as _qn.
+ */
+#define SCMI_QUIRK(_qn, _blk)						\
+	do {								\
+		if (static_branch_unlikely(&(scmi_quirk_ ## _qn)))	\
+			(_blk);						\
+	} while (0)
+
+void scmi_quirks_initialize(void);
+void scmi_quirks_enable(struct device *dev, const char *vend,
+			const char *subv, const u32 impl);
+
+#else
+
+#define DECLARE_SCMI_QUIRK(_qn)
+/* Force quirks compilation even when SCMI Quirks are disabled */
+#define SCMI_QUIRK(_qn, _blk)						\
+	do {								\
+		if (0)							\
+			(_blk);						\
+	} while (0)
+
+static inline void scmi_quirks_initialize(void) { }
+static inline void scmi_quirks_enable(struct device *dev, const char *vend,
+				      const char *sub_vend, const u32 impl) { }
+
+#endif /* CONFIG_ARM_SCMI_QUIRKS */
+
+/* Quirk delarations */
+DECLARE_SCMI_QUIRK(clock_rates_triplet_out_of_spec);
+DECLARE_SCMI_QUIRK(perf_level_get_fc_force);
+
+#endif /* _SCMI_QUIRKS_H */