linux-kernel - [PATCH 1/3] dt-bindings: pwm: imx: Add compatible string imx8qxp-mipi-pwm

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Message-Id: <20240711-pwm-v1-1-4d5766f99b8b@nxp.com>
Date: Thu, 11 Jul 2024 17:08:56 -0400
From: Frank Li <Frank.Li@....com>
To: Uwe Kleine-König <ukleinek@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-pwm@...r.kernel.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Frank Li <Frank.Li@....com>
Subject: [PATCH 1/3] dt-bindings: pwm: imx: Add compatible string
 imx8qxp-mipi-pwm

The pwm in imx8qxp mipi subsystem require one extra '32k' clock. So add
compatible string 'imx8qxp-mipi-pwm'. Increase maxItems for clock and
clock-names. Add allOf check to make sure other compatible string keep the
same restriction.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 Documentation/devicetree/bindings/pwm/imx-pwm.yaml | 29 +++++++++++++++++++---
 1 file changed, 26 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pwm/imx-pwm.yaml b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
index 04148198e34d0..750636985f937 100644
--- a/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
+++ b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
@@ -9,9 +9,6 @@ title: Freescale i.MX PWM controller
 maintainers:
   - Philipp Zabel <p.zabel@...gutronix.de>
 
-allOf:
-  - $ref: pwm.yaml#
-
 properties:
   "#pwm-cells":
     description:
@@ -42,6 +39,7 @@ properties:
               - fsl,imx8mp-pwm
               - fsl,imx8mq-pwm
               - fsl,imx8qxp-pwm
+              - fsl,imx8qxp-mipi-pwm
           - const: fsl,imx27-pwm
 
   reg:
@@ -51,11 +49,15 @@ properties:
     items:
       - description: SoC PWM ipg clock
       - description: SoC PWM per clock
+      - description: 32k clock
+    minItems: 2
 
   clock-names:
     items:
       - const: ipg
       - const: per
+      - const: 32k
+    minItems: 2
 
   interrupts:
     maxItems: 1
@@ -69,6 +71,27 @@ required:
   - clocks
   - clock-names
 
+allOf:
+  - $ref: pwm.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx8qxp-mipi-pwm
+    then:
+      properties:
+        clock:
+          minItems: 3
+        clock-names:
+          minItems: 3
+    else:
+      properties:
+        clock:
+          maxItems: 2
+        clock-name:
+          maxItems: 2
+
 additionalProperties: false
 
 examples:

-- 
2.34.1