[PATCH v1 1/2] ASoC: dt-bindings: tegra: Add binding for RT5631

[Ion Agorria <AG0RRIA@yahoo.com>]

From: Svyatoslav Ryhel <clamor95@gmail.com>

Add device-tree binding that describes hardware integration of RT5631
audio codec chip with NVIDIA Tegra SoCs.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Ion Agorria <ion@agorria.com>
---
 .../sound/nvidia,tegra-audio-rt5631.yaml      | 134 ++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5631.yaml

diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5631.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5631.yaml
new file mode 100644
index 000000000000..6ee62c599518
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5631.yaml
@@ -0,0 +1,134 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/sound/nvidia,tegra-audio-rt5631.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra RT5631 ASoC
+
+description: |
+  This binding describes integration of the Realtek ALC5631/RT5631 sound
+  codec with the sound system of NVIDIA Tegra SoCs.
+
+maintainers:
+  - Jon Hunter <jonathanh@nvidia.com>
+  - Stephen Warren <swarren@nvidia.com>
+  - Thierry Reding <thierry.reding@gmail.com>
+
+properties:
+  compatible:
+    enum:
+      - nvidia,tegra-audio-rt5631
+
+  clocks:
+    minItems: 3
+    items:
+      - description: PLL A clock
+      - description: PLL A OUT0 clock
+      - description: The Tegra cdev1/extern1 clock, which feeds the card's mclk
+
+  clock-names:
+    minItems: 3
+    items:
+      - const: pll_a
+      - const: pll_a_out0
+      - const: mclk
+
+  assigned-clocks:
+    minItems: 1
+    maxItems: 3
+
+  assigned-clock-parents:
+    minItems: 1
+    maxItems: 3
+
+  assigned-clock-rates:
+    minItems: 1
+    maxItems: 3
+
+  nvidia,model:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: User-visible name of this sound complex.
+
+  nvidia,audio-routing:
+    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+    description: |
+      A list of the connections between audio components.
+      Each entry is a pair of strings, the first being the connection's sink,
+      the second being the connection's source. Valid names for sources and
+      sinks are the RT5631's pins (as documented in its binding), and the jacks
+      on the board:
+
+      * Int Spk
+      * Headphone Jack
+      * Mic Jack
+      * Int Mic
+
+  nvidia,i2s-controller:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Phandle of the Tegra I2S controller.
+
+  nvidia,audio-codec:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Phandle of the RT5631 audio codec.
+
+  nvidia,hp-mute-gpios:
+    description: GPIO that mutes the headphones (button event).
+    maxItems: 1
+
+  nvidia,hp-det-gpios:
+    description: GPIO that detects headphones plug-in.
+    maxItems: 1
+
+additionalProperties: false
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - assigned-clocks
+  - assigned-clock-parents
+  - nvidia,model
+  - nvidia,audio-routing
+  - nvidia,i2s-controller
+  - nvidia,audio-codec
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra30-car.h>
+    #include <dt-bindings/soc/tegra-pmc.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    sound {
+        compatible = "nvidia,tegra-audio-rt5631";
+        nvidia,model = "NVIDIA Tegra RT5631";
+
+        nvidia,audio-routing =
+            "Headphone Jack", "HPOL",
+            "Headphone Jack", "HPOR",
+            "Int Spk", "SPOL",
+            "Int Spk", "SPOR",
+            "MIC1", "MIC Bias1",
+            "MIC Bias1", "Mic Jack",
+            "DMIC", "Int Mic";
+
+        nvidia,i2s-controller = <&tegra_i2s1>;
+        nvidia,audio-codec = <&rt5631>;
+
+        nvidia,hp-det-gpios = <&gpio 178 GPIO_ACTIVE_LOW>;
+        nvidia,hp-mute-gpios = <&gpio 186 GPIO_ACTIVE_LOW>;
+
+        clocks = <&tegra_car TEGRA30_CLK_PLL_A>,
+                 <&tegra_car TEGRA30_CLK_PLL_A_OUT0>,
+                 <&tegra_pmc TEGRA_PMC_CLK_OUT_1>;
+        clock-names = "pll_a", "pll_a_out0", "mclk";
+
+        assigned-clocks = <&tegra_car TEGRA30_CLK_EXTERN1>,
+                          <&tegra_pmc TEGRA_PMC_CLK_OUT_1>;
+
+        assigned-clock-parents = <&tegra_car TEGRA30_CLK_PLL_A_OUT0>,
+                                 <&tegra_car TEGRA30_CLK_EXTERN1>;
+    };
+
+...
-- 
2.26.2