[PATCH 1/3] dt-bindings: sound: Add CS42L84 codec

[James Calligeros <jcalligeros99@xxxxxxxxx>]

From: Martin Povišer <povik+lin@xxxxxxxxxxx>

CS42L84 is a headphone jack codec made by Cirrus Logic and seen in Apple
computer models starting with 2021 Macbook Pros. It is not a publicly
documented part. To a degree the part is similar to the public CS42L42.
(The L84 superseded L83 seen in earlier Apple models, and the L83 was
pretty much the same as L42.)

Signed-off-by: Martin Povišer <povik+lin@xxxxxxxxxxx>
Signed-off-by: James Calligeros <jcalligeros99@xxxxxxxxx>
---
 Documentation/devicetree/bindings/sound/cirrus,cs42l84.yaml | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 MAINTAINERS                                                 |  1 +
 2 files changed, 61 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/cirrus,cs42l84.yaml b/Documentation/devicetree/bindings/sound/cirrus,cs42l84.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..12bc6dbeeddfaccf9dd00deb2676deac25f28c9e
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cirrus,cs42l84.yaml
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/cirrus,cs42l84.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic CS42L84 audio CODEC
+
+maintainers:
+  - povik+lin@xxxxxxxxxxx
+
+description:
+  The CS42L84 is a headphone jack codec made by Cirrus Logic and embedded
+  in personal computers sold by Apple. It was first seen in 2021 Macbook Pro
+  models.
+
+  It has stereo DAC for playback, mono ADC for capture, and is somewhat
+  similar to CS42L42 but with a different regmap.
+
+properties:
+  compatible:
+    enum:
+      - cirrus,cs42l84
+
+  reg:
+    description:
+      I2C address of the device
+    maxItems: 1
+
+  reset-gpios:
+    description:
+      Reset pin, asserted to reset the device, deasserted to bring
+      the device online
+    maxItems: 1
+
+  interrupts:
+    description:
+      Interrupt for the IRQ output line of the device
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      jack_codec: codec@4b {
+          compatible = "cirrus,cs42l84";
+          reg = <0x4b>;
+          reset-gpios = <&pinctrl_nub 4 GPIO_ACTIVE_LOW>;
+          interrupts-extended = <&pinctrl_ap 180 IRQ_TYPE_LEVEL_LOW>;
+          #sound-dai-cells = <0>;
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index c1a2c296446c0724a0c6e70c845e5e5e1e693fd5..f5f85714dc4e8ca9c60b3f6963b2cec1ea33fdd0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2132,6 +2132,7 @@ L:	asahi@xxxxxxxxxxxxxxx
 L:	linux-sound@xxxxxxxxxxxxxxx
 S:	Maintained
 F:	Documentation/devicetree/bindings/sound/adi,ssm3515.yaml
+F:	Documentation/devicetree/bindings/sound/cirrus,cs42l84.yaml
 F:	Documentation/devicetree/bindings/sound/apple,*
 F:	sound/soc/apple/*
 F:	sound/soc/codecs/cs42l83-i2c.c

-- 
2.47.0