[PATCH v4 1/7] ASoC: dt-bindings: add amlogic,gxbb-audin

[Valerio Setti]

AUDIN provides I2S audio input support to the Meson GXBB and GXL SoCs.

The AUDIN block on GXL is identical to the GXBB one, so "amlogic,gxl-audin"
uses "amlogic,gxbb-audin" as fallback; the SoC-specific compatible is
added so that differences can be handled later if any are found.

Signed-off-by: Valerio Setti <vsetti at baylibre.com>
---
 .../bindings/sound/amlogic,gxbb-audin.yaml         | 69 ++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/amlogic,gxbb-audin.yaml b/Documentation/devicetree/bindings/sound/amlogic,gxbb-audin.yaml
new file mode 100644
index 000000000000..4df4796623ed
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/amlogic,gxbb-audin.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/amlogic,gxbb-audin.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic GXBB AUDIN audio input controller
+
+maintainers:
+  - Valerio Setti <vsetti at baylibre.com>
+
+description:
+  AUDIN is the audio input block of the Amlogic GXBB/GXL SoCs. It supports
+  various input formatters (I2S, SPDIF, PCM, HDMI) feeding three FIFOs that
+  transfer captured samples to memory. The sound-dai cell selects the FIFO.
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - const: amlogic,gxbb-audin
+      - items:
+          - const: amlogic,gxl-audin
+          - const: amlogic,gxbb-audin
+
+  reg:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: AUDIN peripheral clock
+
+  "#sound-dai-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - resets
+  - interrupts
+  - clocks
+  - "#sound-dai-cells"
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/gxbb-clkc.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/reset/amlogic,meson-gxbb-reset.h>
+
+    audio-controller at a000 {
+      compatible = "amlogic,gxbb-audin";
+      reg = <0xa000 0x148>;
+      resets = <&reset RESET_AUDIN>;
+      interrupts = <GIC_SPI 7 IRQ_TYPE_EDGE_RISING>;
+      sound-name-prefix = "AUDIN";
+      #sound-dai-cells = <1>;
+      clocks = <&clkc CLKID_I2S_SPDIF>;
+    };

-- 
2.47.3