[Patch v4 03/10] ASoC: dt-bindings: lpc32xx: Add lpc32xx i2s DT binding

[Piotr Wojtaszczyk]

Add nxp,lpc3220-i2s DT binding documentation.

Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk at timesys.com>
---
Changes for v4:
- Custom dma-vc-names property with standard dmas and dma-names
- Added to MAINTAINERS

Changes for v3:
- Added '$ref: dai-common.yaml#' and '#sound-dai-cells'
- Dropped all clock-names, references
- Dropped status property from the example
- Added interrupts property
- 'make dt_binding_check' pass

Changes for v2:
- Added maintainers field
- Dropped clock-names
- Dropped unused unneded interrupts field

 .../bindings/sound/nxp,lpc3220-i2s.yaml       | 73 +++++++++++++++++++
 MAINTAINERS                                   | 10 +++
 2 files changed, 83 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/nxp,lpc3220-i2s.yaml

diff --git a/Documentation/devicetree/bindings/sound/nxp,lpc3220-i2s.yaml b/Documentation/devicetree/bindings/sound/nxp,lpc3220-i2s.yaml
new file mode 100644
index 000000000000..40a0877a8aba
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nxp,lpc3220-i2s.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nxp,lpc3220-i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP LPC32XX I2S Controller
+
+description:
+  The I2S controller in LPC32XX SoCs, ASoC DAI.
+
+maintainers:
+  - J.M.B. Downing <jonathan.downing at nautel.com>
+  - Piotr Wojtaszczyk <piotr.wojtaszczyk at timesys.com>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - nxp,lpc3220-i2s
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: input clock of the peripheral.
+
+  dmas:
+    items:
+      - description: RX DMA Channel
+      - description: TX DMA Channel
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
+  "#sound-dai-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - dmas
+  - dma-names
+  - '#sound-dai-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/lpc32xx-clock.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2s at 20094000 {
+      compatible = "nxp,lpc3220-i2s";
+      reg = <0x20094000 0x1000>;
+      interrupts = <22 IRQ_TYPE_LEVEL_HIGH>;
+      clocks = <&clk LPC32XX_CLK_I2S0>;
+      dmas = <&dma 0 1>, <&dma 13 1>;
+      dma-names = "rx", "tx";
+      #sound-dai-cells = <0>;
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index f7adf9f66dfa..fadf1baafd89 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8918,6 +8918,16 @@ S:	Maintained
 F:	sound/soc/fsl/fsl*
 F:	sound/soc/fsl/imx*
 
+FREESCALE SOC LPC32XX SOUND DRIVERS
+M:	J.M.B. Downing <jonathan.downing at nautel.com>
+M:	Piotr Wojtaszczyk <piotr.wojtaszczyk at timesys.com>
+R:	Vladimir Zapolskiy <vz at mleia.com>
+L:	alsa-devel at alsa-project.org (moderated for non-subscribers)
+L:	linuxppc-dev at lists.ozlabs.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/sound/nxp,lpc3220-i2s.yaml
+N:	lpc32xx
+
 FREESCALE SOC SOUND QMC DRIVER
 M:	Herve Codina <herve.codina at bootlin.com>
 L:	alsa-devel at alsa-project.org (moderated for non-subscribers)
-- 
2.25.1