[PATCH v2 0/2] dt-bindings: watchdog: Convert TS-4800 to DT schema

[PATCH v2 0/2] dt-bindings: watchdog: Convert TS-4800 to DT schema

[Eduard Bostina]

This patch series converts the Technologic Systems TS-4800 Watchdog timer
bindings to DT schema and fixes the active hardware node in the iMX51
device tree.

---
Changes in v2:
- dt-bindings: watchdog: Moved 'allOf' block below 'required'.
- dt-bindings: watchdog: Removed the 'syscon' node from the example.

Eduard Bostina (2):
  dt-bindings: watchdog: Convert TS-4800 to DT schema
  ARM: dts: nxp: imx51-ts4800: Rename wdt node to watchdog

 .../watchdog/technologic,ts4800-wdt.yaml      | 40 +++++++++++++++++++
 .../bindings/watchdog/ts4800-wdt.txt          | 25 ------------
 arch/arm/boot/dts/nxp/imx/imx51-ts4800.dts    |  2 +-
 3 files changed, 41 insertions(+), 26 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/watchdog/technologic,ts4800-wdt.yaml
 delete mode 100644 Documentation/devicetree/bindings/watchdog/ts4800-wdt.txt

-- 
2.53.0

[PATCH v2 1/2] dt-bindings: watchdog: Convert TS-4800 to DT schema

[Eduard Bostina]

Convert the Technologic Systems TS-4800 watchdog timer bindings
to DT schema.

Signed-off-by: Eduard Bostina <egbostina@gmail.com>
---
Note:
* This patch is part of the GSoC2026 application process for device tree bindings conversions
* https://github.com/LinuxFoundationGSoC/ProjectIdeas/wiki/GSoC-2026-Device-Tree-Bindings

 .../watchdog/technologic,ts4800-wdt.yaml      | 40 +++++++++++++++++++
 .../bindings/watchdog/ts4800-wdt.txt          | 25 ------------
 2 files changed, 40 insertions(+), 25 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/watchdog/technologic,ts4800-wdt.yaml
 delete mode 100644 Documentation/devicetree/bindings/watchdog/ts4800-wdt.txt

diff --git a/Documentation/devicetree/bindings/watchdog/technologic,ts4800-wdt.yaml b/Documentation/devicetree/bindings/watchdog/technologic,ts4800-wdt.yaml
new file mode 100644
index 000000000..5c2541ac6
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/technologic,ts4800-wdt.yaml
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/technologic,ts4800-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Technologic Systems TS-4800 Watchdog
+
+maintainers:
+  - Eduard Bostina <egbostina@gmail.com>
+
+properties:
+  compatible:
+    const: technologic,ts4800-wdt
+
+  syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      - items:
+          - description: Phandle to the FPGA's syscon
+          - description: Offset to the watchdog register
+    description: Phandle / integers array that points to the syscon node which
+      describes the FPGA's syscon registers.
+
+required:
+  - compatible
+  - syscon
+
+allOf:
+  - $ref: watchdog.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+      watchdog {
+        compatible = "technologic,ts4800-wdt";
+        syscon = <&syscon 0xe>;
+        timeout-sec = <10>;
+      };
diff --git a/Documentation/devicetree/bindings/watchdog/ts4800-wdt.txt b/Documentation/devicetree/bindings/watchdog/ts4800-wdt.txt
deleted file mode 100644
index 8f6caad42..000000000
--- a/Documentation/devicetree/bindings/watchdog/ts4800-wdt.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-Technologic Systems Watchdog
-
-Required properties:
-- compatible: must be "technologic,ts4800-wdt"
-- syscon: phandle / integer array that points to the syscon node which
-          describes the FPGA's syscon registers.
-          - phandle to FPGA's syscon
-          - offset to the watchdog register
-
-Optional property:
-- timeout-sec: contains the watchdog timeout in seconds.
-
-Example:
-
-syscon: syscon@b0010000 {
-	compatible = "syscon", "simple-mfd";
-	reg = <0xb0010000 0x3d>;
-	reg-io-width = <2>;
-
-	wdt@e {
-		compatible = "technologic,ts4800-wdt";
-		syscon = <&syscon 0xe>;
-		timeout-sec = <10>;
-	};
-}
-- 
2.53.0

[PATCH v2 2/2] ARM: dts: nxp: imx51-ts4800: Rename wdt node to watchdog

[Eduard Bostina]

The Technologic Systems TS-4800 watchdog node was previously named 'wdt',
which violates the core watchdog.yaml schema expecting generic node names.

Rename the node to 'watchdog' to fix the following dtbs_check warning:
'wdt' does not match '^(pmic|timer|watchdog)(@.*|-([0-9]|[1-9][0-9]+))?$'

Signed-off-by: Eduard Bostina <egbostina@gmail.com>
---
Note:
* This patch is part of the GSoC2026 application process for device tree bindings conversions
* https://github.com/LinuxFoundationGSoC/ProjectIdeas/wiki/GSoC-2026-Device-Tree-Bindings

 arch/arm/boot/dts/nxp/imx/imx51-ts4800.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/nxp/imx/imx51-ts4800.dts b/arch/arm/boot/dts/nxp/imx/imx51-ts4800.dts
index 5118a68db..3610ce395 100644
--- a/arch/arm/boot/dts/nxp/imx/imx51-ts4800.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx51-ts4800.dts
@@ -155,7 +155,7 @@ syscon: syscon@10000 {
 			reg = <0x10000 0x3d>;
 			reg-io-width = <2>;
 
-			wdt {
+			watchdog {
 				compatible = "technologic,ts4800-wdt";
 				syscon = <&syscon 0xe>;
 			};
-- 
2.53.0

Re: [PATCH v2 1/2] dt-bindings: watchdog: Convert TS-4800 to DT schema

[Krzysztof Kozlowski]

On Mon, Mar 23, 2026 at 07:59:44PM +0200, Eduard Bostina wrote:
> Convert the Technologic Systems TS-4800 watchdog timer bindings
> to DT schema.
> 
> Signed-off-by: Eduard Bostina <egbostina@gmail.com>
> ---

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof

Re: [PATCH v2 1/2] dt-bindings: watchdog: Convert TS-4800 to DT schema

[Guenter Roeck]

On 3/23/26 10:59, Eduard Bostina wrote:
> Convert the Technologic Systems TS-4800 watchdog timer bindings
> to DT schema.
> 
> Signed-off-by: Eduard Bostina <egbostina@gmail.com>

Reviewed-by: Guenter Roeck <linux@roeck-us.net>