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* [PATCH v2 1/1] dt-bindings: watchdog: fsl-imx-wdt: Add missing 'big-endian' property
@ 2024-10-07 21:24 Frank Li
  2024-10-08 13:34 ` Krzysztof Kozlowski
  2024-10-31 19:02 ` Frank Li
  0 siblings, 2 replies; 6+ messages in thread
From: Frank Li @ 2024-10-07 21:24 UTC (permalink / raw)
  To: Wim Van Sebroeck, Guenter Roeck, Rob Herring, Krzysztof Kozlowski,
	Conor Dooley, Shawn Guo, Sascha Hauer, Pengutronix Kernel Team,
	Fabio Estevam, open list:WATCHDOG DEVICE DRIVERS,
	open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
	open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	open list
  Cc: imx

From: Animesh Agarwal <animeshagarwal28@gmail.com>

Add missing big-endian property in watchdog/fsl-imx-wdt.yaml schema. Only
allow big-endian property for ls1012a and ls1043a.

Fix dtbs_check errors.
arch/arm64/boot/dts/freescale/fsl-ls1012a-frwy.dtb: watchdog@2ad0000:
    Unevaluated properties are not allowed ('big-endian' was unexpected)

Cc: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Animesh Agarwal <animeshagarwal28@gmail.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---

Change from v1 to v2:
  only allow big endian for layerscape platform.

previous post at:
https://lore.kernel.org/imx/20240806103819.10890-1-animeshagarwal28@gmail.com/

check spec, and dump watch dog reset value
at ls1043a platform.

0x02A80000:  00 30 00 00 00 10 00 04 00 01 00 00 00 00 00 0

It is big-endian. imx2_wdt.c use regmap which call regmap_get_val_endian()
to handle endian.

So this change is corret.

big-endian for wdt is necessary
---
 .../devicetree/bindings/watchdog/fsl-imx-wdt.yaml  | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml
index 36b836d0620c9..0da953cb71272 100644
--- a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml
+++ b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml
@@ -48,6 +48,8 @@ properties:
   clocks:
     maxItems: 1
 
+  big-endian: true
+
   fsl,ext-reset-output:
     $ref: /schemas/types.yaml#/definitions/flag
     description: |
@@ -93,6 +95,18 @@ allOf:
       properties:
         fsl,suspend-in-wait: false
 
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - fsl,ls1012a-wdt
+                - fsl,ls1043a-wdt
+    then:
+      properties:
+        big-endian: false
+
 unevaluatedProperties: false
 
 examples:
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2024-11-06  8:28 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-10-07 21:24 [PATCH v2 1/1] dt-bindings: watchdog: fsl-imx-wdt: Add missing 'big-endian' property Frank Li
2024-10-08 13:34 ` Krzysztof Kozlowski
2024-10-31 19:02 ` Frank Li
2024-11-05  8:32   ` Wim Van Sebroeck
2024-11-05 13:02     ` Rob Herring
2024-11-06  8:01       ` Wim Van Sebroeck

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