[PATCH v2 4/5] ASoC: dt-bindings: cs35l45: Cirrus Logic CS35L45 Smart Amp

[Richard Fitzgerald <rf@opensource.cirrus.com>]

This adds the schema binding for the Cirrus Logic CS35L45 Smart Amp
and associated header file.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../bindings/sound/cirrus,cs35l45.yaml        | 75 +++++++++++++++++++
 MAINTAINERS                                   |  2 +
 include/dt-bindings/sound/cs35l45.h           | 20 +++++
 3 files changed, 97 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/cirrus,cs35l45.yaml
 create mode 100644 include/dt-bindings/sound/cs35l45.h

diff --git a/Documentation/devicetree/bindings/sound/cirrus,cs35l45.yaml b/Documentation/devicetree/bindings/sound/cirrus,cs35l45.yaml
new file mode 100644
index 000000000000..184a1344ea76
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cirrus,cs35l45.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/cirrus,cs35l45.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic CS35L45 Speaker Amplifier
+
+maintainers:
+  - Ricardo Rivera-Matos <rriveram@opensource.cirrus.com>
+  - Richard Fitzgerald <rf@opensource.cirrus.com>
+
+description: |
+  CS35L45 is a Boosted Mono Class D Amplifier with DSP
+  Speaker Protection and Adaptive Battery Management.
+
+properties:
+  compatible:
+    enum:
+      - cirrus,cs35l45
+
+  reg:
+    maxItems: 1
+
+  '#sound-dai-cells':
+    const: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  vdd-a-supply:
+    description: voltage regulator phandle for the VDD_A supply
+
+  vdd-batt-supply:
+    description: voltage regulator phandle for the VDD_BATT supply
+
+  spi-max-frequency:
+    maximum: 5000000
+
+  cirrus,asp-sdout-hiz-ctrl:
+    description:
+      Audio serial port SDOUT Hi-Z control. Sets the Hi-Z
+      configuration for SDOUT pin of amplifier. Logical OR of
+      CS35L45_ASP_TX_HIZ_xxx values.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    minimum: 0
+    maximum: 3
+    default: 2
+
+required:
+  - compatible
+  - reg
+  - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/sound/cs35l45.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        cs35l45: cs35l45@2 {
+          #sound-dai-cells = <1>;
+          compatible = "cirrus,cs35l45";
+          reg = <2>;
+          spi-max-frequency = <5000000>;
+          vdd-a-supply = <&dummy_vreg>;
+          vdd-batt-supply = <&dummy_vreg>;
+          reset-gpios = <&gpio 110 0>;
+          cirrus,asp-sdout-hiz-ctrl = <(CS35L45_ASP_TX_HIZ_UNUSED |
+                                        CS35L45_ASP_TX_HIZ_DISABLED)>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index fd768d43e048..0c5971c3dd9e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4688,10 +4688,12 @@ CIRRUS LOGIC AUDIO CODEC DRIVERS
 M:	James Schulman <james.schulman@cirrus.com>
 M:	David Rhodes <david.rhodes@cirrus.com>
 M:	Lucas Tanure <tanureal@opensource.cirrus.com>
+M:	Richard Fitzgerald <rf@opensource.cirrus.com>
 L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
 L:	patches@opensource.cirrus.com
 S:	Maintained
 F:	Documentation/devicetree/bindings/sound/cirrus,cs*
+F:	include/dt-bindings/sound/cs*
 F:	sound/pci/hda/cs*
 F:	sound/soc/codecs/cs*
 
diff --git a/include/dt-bindings/sound/cs35l45.h b/include/dt-bindings/sound/cs35l45.h
new file mode 100644
index 000000000000..076da4b2c28d
--- /dev/null
+++ b/include/dt-bindings/sound/cs35l45.h
@@ -0,0 +1,20 @@
+/* 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
+
+#endif /* DT_CS35L45_H */
-- 
2.30.2