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Date: Mon, 13 Feb 2023 00:21:36 +0100
From: Alexander Sverdlin <alexander.sverdlin@...il.com>
To: devicetree@...r.kernel.org
Cc: Alexander Sverdlin <alexander.sverdlin@...il.com>,
Hartley Sweeten <hsweeten@...ionengravers.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] dt-bindings: sound: ep93xx: Add I2S and AC'97 descriptions
Add device tree bindings for Cirrus Logic EP93xx internal SoCs' I2S and
AC'97 controllers.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@...il.com>
---
.../bindings/sound/cirrus,ep9301-ac97.yaml | 47 ++++++++++++++
.../bindings/sound/cirrus,ep9301-i2s.yaml | 63 +++++++++++++++++++
MAINTAINERS | 1 +
3 files changed, 111 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/cirrus,ep9301-ac97.yaml
create mode 100644 Documentation/devicetree/bindings/sound/cirrus,ep9301-i2s.yaml
diff --git a/Documentation/devicetree/bindings/sound/cirrus,ep9301-ac97.yaml b/Documentation/devicetree/bindings/sound/cirrus,ep9301-ac97.yaml
new file mode 100644
index 000000000000..bfa5d392f525
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cirrus,ep9301-ac97.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/cirrus,ep9301-ac97.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus EP93xx AC'97 Controller
+
+description: |
+ The AC’97 Controller includes a 5-pin serial interface to an external audio
+ codec.
+
+maintainers:
+ - Alexander Sverdlin <alexander.sverdlin@...il.com>
+
+properties:
+ compatible:
+ const: cirrus,ep9301-ac97
+
+ '#sound-dai-cells':
+ const: 0
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - '#sound-dai-cells'
+ - reg
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ ac97: ac97@...80000 {
+ compatible = "cirrus,ep9301-ac97";
+ #sound-dai-cells = <0>;
+ reg = <0x80880000 0xac>;
+ interrupt-parent = <&vic0>;
+ interrupts = <6>;
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/cirrus,ep9301-i2s.yaml b/Documentation/devicetree/bindings/sound/cirrus,ep9301-i2s.yaml
new file mode 100644
index 000000000000..b47d28dc8389
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cirrus,ep9301-i2s.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/cirrus,ep9301-i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus EP93xx I2S Controller
+
+description: |
+ The I2S controller is used to stream serial audio data between the external
+ I2S CODECs’, ADCs/DACs, and the ARM Core. The controller supports I2S, Left-
+ and Right-Justified DSP formats.
+
+maintainers:
+ - Alexander Sverdlin <alexander.sverdlin@...il.com>
+
+properties:
+ compatible:
+ const: cirrus,ep9301-i2s
+
+ '#sound-dai-cells':
+ const: 0
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ minItems: 3
+
+ clock-names:
+ items:
+ - const: mclk
+ - const: sclk
+ - const: lrclk
+
+required:
+ - compatible
+ - '#sound-dai-cells'
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ i2s: i2s@...20000 {
+ compatible = "cirrus,ep9301-i2s";
+ #sound-dai-cells = <0>;
+ reg = <0x80820000 0x100>;
+ interrupt-parent = <&vic1>;
+ interrupts = <28>;
+ clocks = <&syscon 29
+ &syscon 30
+ &syscon 31>;
+ clock-names = "mclk", "sclk", "lrclk";
+ };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 254aab631fd4..765902756c37 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2092,6 +2092,7 @@ M: Alexander Sverdlin <alexander.sverdlin@...il.com>
L: linux-arm-kernel@...ts.infradead.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/iio/adc/cirrus,ep9301-adc.yaml
+F: Documentation/devicetree/bindings/sound/cirrus,ep9301-*
F: arch/arm/mach-ep93xx/
F: arch/arm/mach-ep93xx/include/mach/
F: drivers/iio/adc/ep93xx_adc.c
--
2.39.1
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