linux-kernel - [PATCH v3 09/13] ASoC: dt-bindings: tegra: Add schema for audio graph card

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Message-ID: <1601573587-15288-10-git-send-email-spujar@nvidia.com>
Date:   Thu, 1 Oct 2020 23:03:03 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     <broonie@...nel.org>, <lgirdwood@...il.com>, <robh+dt@...nel.org>,
        <kuninori.morimoto.gx@...esas.com>,
        <pierre-louis.bossart@...ux.intel.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>
CC:     <alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <sharadg@...dia.com>, <mkumard@...dia.com>,
        <viswanathl@...dia.com>, <rlokhande@...dia.com>,
        <dramesh@...dia.com>, <atalambedu@...dia.com>,
        <nwartikar@...dia.com>, <swarren@...dia.com>,
        <nicoleotsuka@...il.com>, Sameer Pujar <spujar@...dia.com>
Subject: [PATCH v3 09/13] ASoC: dt-bindings: tegra: Add schema for audio graph card

Add YAML schema for Tegra audio graph sound card DT bindings. It uses the
same DT bindings provided by generic audio graph driver. Along with this
few standard clock DT bindings are added which are specifically required
for Tegra audio.

Signed-off-by: Sameer Pujar <spujar@...dia.com>
---
 .../sound/nvidia,tegra-audio-graph-card.yaml       | 70 ++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra-audio-graph-card.yaml

diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-graph-card.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-graph-card.yaml
new file mode 100644
index 0000000..b73fbe5
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-graph-card.yaml
@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra-audio-graph-card.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Audio Graph based Tegra sound card driver
+
+description: |
+  This is based on generic audio graph card driver along with additional
+  customizations for Tegra platforms. It uses the same bindings with
+  additional standard clock DT bindings required for Tegra.
+
+  See{LINUX}/Documentation/devicetree/bindings/sound/audio-graph-card.txt
+
+maintainers:
+  - Jon Hunter <jonathanh@...dia.com>
+  - Sameer Pujar <spujar@...dia.com>
+
+properties:
+  compatible:
+    oneOf:
+      - const: nvidia,tegra210-audio-graph-card
+      - const: nvidia,tegra186-audio-graph-card
+
+  clocks:
+   minItems: 2
+
+  clock-names:
+   minItems: 2
+   items:
+     - const: pll_a
+     - const: plla_out0
+
+  assigned-clocks:
+    minItems: 1
+    maxItems: 3
+
+  assigned-clock-parents:
+    minItems: 1
+    maxItems: 3
+
+  assigned-clock-rates:
+    minItems: 1
+    maxItems: 3
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - assigned-clocks
+  - assigned-clock-parents
+
+examples:
+  - |
+    #include<dt-bindings/clock/tegra210-car.h>
+
+    tegra_sound {
+        compatible = "nvidia,tegra210-audio-graph-card";
+        clocks = <&tegra_car TEGRA210_CLK_PLL_A>,
+                 <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
+        clock-names = "pll_a", "plla_out0";
+        assigned-clocks = <&tegra_car TEGRA210_CLK_PLL_A>,
+                          <&tegra_car TEGRA210_CLK_PLL_A_OUT0>,
+                          <&tegra_car TEGRA210_CLK_EXTERN1>;
+        assigned-clock-parents = <0>, <0>, <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
+        assigned-clock-rates = <368640000>, <49152000>, <12288000>;
+    };
+
+...
-- 
2.7.4