diff --git a/sys/compat/linuxkpi/common/include/linux/pwm.h b/sys/compat/linuxkpi/common/include/linux/pwm.h
new file mode 100644
index 000000000000..59a17f525c91
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/pwm.h
@@ -0,0 +1,94 @@
+/*-
+ * Copyright (c) 2022 Vladimir Kondratyev <wulf@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _LINUXKPI_LINUX_PWM_H_
+#define	_LINUXKPI_LINUX_PWM_H_
+
+#include <linux/device.h>
+#include <linux/err.h>
+
+struct pwm_state {
+	uint64_t period;
+	bool enabled;
+};
+
+struct pwm_device {
+	struct pwm_state state;
+};
+
+static inline struct pwm_device *
+pwm_get(struct device *dev, const char *consumer)
+{
+	return (ERR_PTR(-ENODEV));
+}
+
+static inline void
+pwm_put(struct pwm_device *pwm)
+{
+}
+
+static inline int
+pwm_enable(struct pwm_device *pwm)
+{
+	return (-EINVAL);
+}
+
+static inline void
+pwm_disable(struct pwm_device *pwm)
+{
+}
+
+static inline bool
+pwm_is_enabled(const struct pwm_device *pwm)
+{
+	return (false);
+}
+
+static inline unsigned int
+pwm_get_relative_duty_cycle(const struct pwm_state *state, unsigned int scale)
+{
+	return (0);
+}
+
+static inline int
+pwm_set_relative_duty_cycle(struct pwm_state *state, unsigned int duty_cycle,
+    unsigned int scale)
+{
+	return (0);
+}
+
+static inline void
+pwm_get_state(const struct pwm_device *pwm, struct pwm_state *state)
+{
+	*state = pwm->state;
+}
+
+static inline int
+pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state)
+{
+	return (-ENOTSUPP);
+}
+
+#endif	/* _LINUXKPI_LINUX_PWM_H_ */