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diff --git a/include/dt-bindings/sound/cs35l45.h b/include/dt-bindings/sound/cs35l45.h
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+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/*
+ * cs35l45.h -- CS35L45 ALSA SoC audio driver DT bindings header
+ *
+ * Copyright 2022 Cirrus Logic, Inc.
+ */
+
+#ifndef DT_CS35L45_H
+#define DT_CS35L45_H
+
+/*
+ * cirrus,asp-sdout-hiz-ctrl
+ *
+ * TX_HIZ_UNUSED: TX pin high-impedance during unused slots.
+ * TX_HIZ_DISABLED: TX pin high-impedance when all channels disabled.
+ */
+#define CS35L45_ASP_TX_HIZ_UNUSED 0x1
+#define CS35L45_ASP_TX_HIZ_DISABLED 0x2
+
+/*
+ * Optional GPIOX Sub-nodes:
+ * The cs35l45 node can have up to three "cirrus,gpio-ctrlX" ('X' = [1,2,3])
+ * sub-nodes for configuring the GPIO pins.
+ *
+ * - gpio-dir : GPIO pin direction. Valid only when 'gpio-ctrl'
+ * is 1.
+ * 0 = Output
+ * 1 = Input (Default)
+ *
+ * - gpio-lvl : GPIO level. Valid only when 'gpio-ctrl' is 1 and 'gpio-dir' is 0.
+ *
+ * 0 = Low (Default)
+ * 1 = High
+ *
+ * - gpio-op-cfg : GPIO output configuration. Valid only when 'gpio-ctrl' is 1
+ * and 'gpio-dir' is 0.
+ *
+ * 0 = CMOS (Default)
+ * 1 = Open Drain
+ *
+ * - gpio-pol : GPIO output polarity select. Valid only when 'gpio-ctrl' is 1
+ * and 'gpio-dir' is 0.
+ *
+ * 0 = Non-inverted, Active High (Default)
+ * 1 = Inverted, Active Low
+ *
+ * - gpio-invert : Defines the polarity of the GPIO pin if configured
+ * as input.
+ *
+ * 0 = Not inverted (Default)
+ * 1 = Inverted
+ *
+ * - gpio-ctrl : Defines the function of the GPIO pin.
+ *
+ * GPIO1:
+ * 0 = High impedance input (Default)
+ * 1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
+ * 2 = Pin acts as MDSYNC, direction controlled by MDSYNC
+ * 3-7 = Reserved
+ *
+ * GPIO2:
+ * 0 = High impedance input (Default)
+ * 1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
+ * 2 = Pin acts as open drain INT
+ * 3 = Reserved
+ * 4 = Pin acts as push-pull output INT. Active low.
+ * 5 = Pin acts as push-pull output INT. Active high.
+ * 6,7 = Reserved
+ *
+ * GPIO3:
+ * 0 = High impedance input (Default)
+ * 1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
+ * 2-7 = Reserved
+ */
+#define CS35L45_NUM_GPIOS 0x3
+
+#endif /* DT_CS35L45_H */