linux-kernel - [PATCH] ASoC: dt-bindings: Convert brcm,bcm2835-i2s to DT schema

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Message-ID: <20250812203356.735234-1-robh@kernel.org>
Date: Tue, 12 Aug 2025 15:33:55 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>
Cc: linux-sound@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: dt-bindings: Convert brcm,bcm2835-i2s to DT schema

Convert the Broadcom BCM2835 I2S/PCM binding to DT schema format. It's a
straightforward conversion.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 .../bindings/sound/brcm,bcm2835-i2s.txt       | 24 ---------
 .../bindings/sound/brcm,bcm2835-i2s.yaml      | 51 +++++++++++++++++++
 2 files changed, 51 insertions(+), 24 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.txt
 create mode 100644 Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.yaml

diff --git a/Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.txt b/Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.txt
deleted file mode 100644
index 7bb0362828ec..000000000000
--- a/Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-* Broadcom BCM2835 SoC I2S/PCM module
-
-Required properties:
-- compatible: "brcm,bcm2835-i2s"
-- reg: Should contain PCM registers location and length.
-- clocks: the (PCM) clock to use
-- dmas: List of DMA controller phandle and DMA request line ordered pairs.
-- dma-names: Identifier string for each DMA request line in the dmas property.
-  These strings correspond 1:1 with the ordered pairs in dmas.
-
-  One of the DMA channels will be responsible for transmission (should be
-  named "tx") and one for reception (should be named "rx").
-
-Example:
-
-bcm2835_i2s: i2s@...03000 {
-	compatible = "brcm,bcm2835-i2s";
-	reg = <0x7e203000 0x24>;
-	clocks = <&clocks BCM2835_CLOCK_PCM>;
-
-	dmas = <&dma 2>,
-	       <&dma 3>;
-	dma-names = "tx", "rx";
-};
diff --git a/Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.yaml b/Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.yaml
new file mode 100644
index 000000000000..f3cfe92684d0
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/brcm,bcm2835-i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM2835 SoC I2S/PCM module
+
+maintainers:
+  - Florian Fainelli <florian.fainelli@...adcom.com>
+
+properties:
+  compatible:
+    const: brcm,bcm2835-i2s
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  dmas:
+    items:
+      - description: Transmission DMA controller phandle and request line.
+      - description: Reception DMA controller phandle and request line.
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - dmas
+  - dma-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/bcm2835.h>
+
+    i2s@...03000 {
+        compatible = "brcm,bcm2835-i2s";
+        reg = <0x7e203000 0x24>;
+        clocks = <&clocks BCM2835_CLOCK_PCM>;
+        dmas = <&dma 2>, <&dma 3>;
+        dma-names = "tx", "rx";
+    };
-- 
2.47.2