linux-kernel - [PATCH] dt-bindings: firmware: Convert cznic,turris-mox-rwtm to DT schema

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Message-ID: <20251215212545.3318816-1-robh@kernel.org>
Date: Mon, 15 Dec 2025 15:25:43 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Marek Behún <kabel@...nel.org>
Cc: devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: firmware: Convert cznic,turris-mox-rwtm to DT schema

Convert the CZ.NIC Turris Mox rWTM firmware binding to DT schema format.
Add the "marvell,armada-3700-rwtm-firmware" compatible which was not
documented.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 .../firmware/cznic,turris-mox-rwtm.txt        | 19 ---------
 .../firmware/cznic,turris-mox-rwtm.yaml       | 40 +++++++++++++++++++
 MAINTAINERS                                   |  2 +-
 3 files changed, 41 insertions(+), 20 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt
 create mode 100644 Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.yaml

diff --git a/Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt b/Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt
deleted file mode 100644
index 338169dea7bb..000000000000
--- a/Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt
+++ /dev/null
@@ -1,19 +0,0 @@
-Turris Mox rWTM firmware driver
-
-Required properties:
- - compatible		: Should be "cznic,turris-mox-rwtm"
- - mboxes		: Must contain a reference to associated mailbox
-
-This device tree node should be used on Turris Mox, or potentially another A3700
-compatible device running the Mox's rWTM firmware in the secure processor (for
-example it is possible to flash this firmware into EspressoBin).
-
-Example:
-
-	firmware {
-		turris-mox-rwtm {
-			compatible = "cznic,turris-mox-rwtm";
-			mboxes = <&rwtm 0>;
-			status = "okay";
-		};
-	};
diff --git a/Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.yaml b/Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.yaml
new file mode 100644
index 000000000000..28caec137cc1
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.yaml
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/cznic,turris-mox-rwtm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: CZ.NIC Turris Mox rWTM firmware
+
+maintainers:
+  - Marek Behún <kabel@...nel.org>
+
+description:
+  This device tree node should be used on Turris Mox, or potentially another
+  A3700 compatible device running the Mox's rWTM firmware in the secure
+  processor (for example it is possible to flash this firmware into
+  EspressoBin).
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: marvell,armada-3700-rwtm-firmware
+          - const: cznic,turris-mox-rwtm
+      - const: marvell,armada-3700-rwtm-firmware
+
+  mboxes:
+    maxItems: 1
+
+required:
+  - compatible
+  - mboxes
+
+additionalProperties: false
+
+examples:
+  - |
+    turris-mox-rwtm {
+        compatible = "marvell,armada-3700-rwtm-firmware", "cznic,turris-mox-rwtm";
+        mboxes = <&rwtm 0>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 663e86eb9ff1..68bae2397ba3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2711,7 +2711,7 @@ F:	Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu
 F:	Documentation/ABI/testing/sysfs-bus-moxtet-devices
 F:	Documentation/ABI/testing/sysfs-firmware-turris-mox-rwtm
 F:	Documentation/devicetree/bindings/bus/cznic,moxtet.yaml
-F:	Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt
+F:	Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.yaml
 F:	Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml
 F:	Documentation/devicetree/bindings/interrupt-controller/marvell,mpic.yaml
 F:	Documentation/devicetree/bindings/leds/cznic,turris-omnia-leds.yaml
-- 
2.51.0