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Message-Id: <20240828092709.2626359-1-lukma@denx.de>
Date: Wed, 28 Aug 2024 11:27:09 +0200
From: Lukasz Majewski <lukma@...x.de>
To: Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>
Cc: Fabio Estevam <festevam@...il.com>,
Conor Dooley <conor+dt@...nel.org>,
devicetree@...r.kernel.org,
linux-sound@...r.kernel.org,
linux-kernel@...r.kernel.org,
Lukasz Majewski <lukma@...x.de>
Subject: [PATCH v3] ASoC: dt-bindings: Convert mxs-saif.txt to fsl,saif.yaml (imx28 saif)
The 'fsl,imx28-saif' compatible has already the mxs-saif.txt description.
This patch converts (and removes it) this file to fsl,saif.yaml (to follow
current fsl convention).
Changes for the mxs-saif.txt:
- Adds 'clocks', '#clock-cells' and '#sound-dai-cells' properties
- Provide device description
Signed-off-by: Lukasz Majewski <lukma@...x.de>
---
Changes for v3:
- Add #clock-cells property
Changes for v2:
- Remove mxs-saif.txt
- Add description with information about extensions required for this
device's current DTS description
---
.../devicetree/bindings/sound/fsl,saif.yaml | 83 +++++++++++++++++++
.../devicetree/bindings/sound/mxs-saif.txt | 41 ---------
2 files changed, 83 insertions(+), 41 deletions(-)
create mode 100644 Documentation/devicetree/bindings/sound/fsl,saif.yaml
delete mode 100644 Documentation/devicetree/bindings/sound/mxs-saif.txt
diff --git a/Documentation/devicetree/bindings/sound/fsl,saif.yaml b/Documentation/devicetree/bindings/sound/fsl,saif.yaml
new file mode 100644
index 000000000000..0b5db6bb1b7c
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/fsl,saif.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/fsl,saif.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale MXS Serial Audio Interface (SAIF)
+
+maintainers:
+ - Lukasz Majewski <lukma@...x.de>
+
+allOf:
+ - $ref: dai-common.yaml#
+
+description:
+ The SAIF is based on I2S module that is used to communicate with audio codecs,
+ but only with half-duplex manner (i.e. it can either transmit or receive PCM
+ audio).
+
+properties:
+ compatible:
+ const: fsl,imx28-saif
+
+ reg:
+ maxItems: 1
+
+ "#sound-dai-cells":
+ const: 0
+
+ interrupts:
+ maxItems: 1
+
+ dmas:
+ maxItems: 1
+
+ dma-names:
+ const: rx-tx
+
+ "#clock-cells":
+ description: Configure the I2S device as MCLK clock provider.
+ const: 0
+
+ clocks:
+ maxItems: 1
+
+ fsl,saif-master:
+ description: Indicate that saif is a slave and its phandle points to master
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+required:
+ - compatible
+ - reg
+ - "#sound-dai-cells"
+ - interrupts
+ - dmas
+ - dma-names
+ - clocks
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ saif0: saif@...42000 {
+ compatible = "fsl,imx28-saif";
+ reg = <0x80042000 2000>;
+ #sound-dai-cells = <0>;
+ interrupts = <59>;
+ dmas = <&dma_apbx 4>;
+ dma-names = "rx-tx";
+ #clock-cells = <0>;
+ clocks = <&clks 53>;
+ };
+ - |
+ saif1: saif@...46000 {
+ compatible = "fsl,imx28-saif";
+ reg = <0x80046000 2000>;
+ #sound-dai-cells = <0>;
+ interrupts = <58>;
+ dmas = <&dma_apbx 5>;
+ dma-names = "rx-tx";
+ clocks = <&clks 53>;
+ fsl,saif-master = <&saif0>;
+ };
diff --git a/Documentation/devicetree/bindings/sound/mxs-saif.txt b/Documentation/devicetree/bindings/sound/mxs-saif.txt
deleted file mode 100644
index 7ba07a118e37..000000000000
--- a/Documentation/devicetree/bindings/sound/mxs-saif.txt
+++ /dev/null
@@ -1,41 +0,0 @@
-* Freescale MXS Serial Audio Interface (SAIF)
-
-Required properties:
-- compatible: Should be "fsl,<chip>-saif"
-- reg: Should contain registers location and length
-- interrupts: Should contain ERROR interrupt number
-- dmas: DMA specifier, consisting of a phandle to DMA controller node
- and SAIF DMA channel ID.
- Refer to dma.txt and fsl-mxs-dma.txt for details.
-- dma-names: Must be "rx-tx".
-
-Optional properties:
-- fsl,saif-master: phandle to the master SAIF. It's only required for
- the slave SAIF.
-
-Note: Each SAIF controller should have an alias correctly numbered
-in "aliases" node.
-
-Example:
-
-aliases {
- saif0 = &saif0;
- saif1 = &saif1;
-};
-
-saif0: saif@...42000 {
- compatible = "fsl,imx28-saif";
- reg = <0x80042000 2000>;
- interrupts = <59>;
- dmas = <&dma_apbx 4>;
- dma-names = "rx-tx";
-};
-
-saif1: saif@...46000 {
- compatible = "fsl,imx28-saif";
- reg = <0x80046000 2000>;
- interrupts = <58>;
- dmas = <&dma_apbx 5>;
- dma-names = "rx-tx";
- fsl,saif-master = <&saif0>;
-};
--
2.39.2
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