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Message-Id: <20241016-cs42l84-v1-1-8d7e9d437d2d@gmail.com>
Date: Wed, 16 Oct 2024 20:41:00 +1000
From: James Calligeros <jcalligeros99@...il.com>
To: Martin Povišer <povik+lin@...ebit.org>,
James Calligeros <jcalligeros99@...il.com>,
David Rhodes <david.rhodes@...rus.com>,
Richard Fitzgerald <rf@...nsource.cirrus.com>,
Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>
Cc: asahi@...ts.linux.dev, linux-sound@...r.kernel.org,
patches@...nsource.cirrus.com, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] dt-bindings: sound: Add CS42L84 codec
From: Martin Povišer <povik+lin@...ebit.org>
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(The L84 superseded L83 seen in earlier Apple models, and the L83 was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@...ebit.org>
Signed-off-by: James Calligeros <jcalligeros99@...il.com>
---
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@...ebit.org
+
+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@...ts.linux.dev
L: linux-sound@...r.kernel.org
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
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