linux-kernel - [PATCH] dt-bindings: timer: xlnx,xps-timer: Make PWM in example usable

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Message-ID: <20250527171504.346696-2-u.kleine-koenig@baylibre.com>
Date: Tue, 27 May 2025 19:15:02 +0200
From: Uwe Kleine-König <u.kleine-koenig@...libre.com>
To: Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Sean Anderson <sean.anderson@...o.com>
Cc: linux-kernel@...r.kernel.org,
	linux-pwm@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH] dt-bindings: timer: xlnx,xps-timer: Make PWM in example usable

With #pwm-cells = <0> no usable reference to that PWM can be created.
Even though a xlnx,xps-timer device only provides a single PWM line, Linux
would fail to determine the right (pwmchip, pwmnumber) combination.

Fix the example to use the recommended value 3 for #pwm-cells.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...libre.com>
---
 Documentation/devicetree/bindings/timer/xlnx,xps-timer.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/timer/xlnx,xps-timer.yaml b/Documentation/devicetree/bindings/timer/xlnx,xps-timer.yaml
index b1597db04263..d36cbf0efbd6 100644
--- a/Documentation/devicetree/bindings/timer/xlnx,xps-timer.yaml
+++ b/Documentation/devicetree/bindings/timer/xlnx,xps-timer.yaml
@@ -82,7 +82,7 @@ examples:
     };
 
     timer@...f0000 {
-        #pwm-cells = <0>;
+        #pwm-cells = <3>;
         clock-names = "s_axi_aclk";
         clocks = <&zynqmp_clk 71>;
         compatible = "xlnx,xps-timer-1.00.a";

base-commit: 0ff41df1cb268fc69e703a08a57ee14ae967d0ca
-- 
2.47.2