linux-kernel - [PATCH 1/4] dt-bindings: microchip: atmel,at91rm9200-tcb: add atmel,tcb-pwm

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Message-Id: <20200820225546.2246517-2-alexandre.belloni@bootlin.com>
Date:   Fri, 21 Aug 2020 00:55:43 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>
Subject: [PATCH 1/4] dt-bindings: microchip: atmel,at91rm9200-tcb: add atmel,tcb-pwm

Move the TCB pwm nodes under their parent and move its documentation to the
main file.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
Cc: Rob Herring <robh+dt@...nel.org>

 .../devicetree/bindings/pwm/atmel-tcb-pwm.txt | 16 ----------
 .../soc/microchip/atmel,at91rm9200-tcb.yaml   | 31 ++++++++++++++++++-
 2 files changed, 30 insertions(+), 17 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pwm/atmel-tcb-pwm.txt

diff --git a/Documentation/devicetree/bindings/pwm/atmel-tcb-pwm.txt b/Documentation/devicetree/bindings/pwm/atmel-tcb-pwm.txt
deleted file mode 100644
index 985fcc65f8c4..000000000000
--- a/Documentation/devicetree/bindings/pwm/atmel-tcb-pwm.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-Atmel TCB PWM controller
-
-Required properties:
-- compatible: should be "atmel,tcb-pwm"
-- #pwm-cells: should be 3. See pwm.yaml in this directory for a description of
-  the cells format. The only third cell flag supported by this binding is
-  PWM_POLARITY_INVERTED.
-- tc-block: The Timer Counter block to use as a PWM chip.
-
-Example:
-
-pwm {
-	compatible = "atmel,tcb-pwm";
-	#pwm-cells = <3>;
-	tc-block = <1>;
-};
diff --git a/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml b/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml
index 55fffae05dcf..a51adfdb58f6 100644
--- a/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml
+++ b/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml
@@ -59,6 +59,7 @@ patternProperties:
         items:
           - enum:
               - atmel,tcb-timer
+              - atmel,tcb-pwm
               - microchip,tcb-capture
       reg:
         description:
@@ -68,11 +69,33 @@ patternProperties:
 
         minItems: 1
         maxItems: 3
+    required:
+      - compatible
+      - reg
+
+  "^pwm@[0-2]$":
+    description: The timer block channels that are used as PWMs.
+    $ref: ../../pwm/pwm.yaml#
+    type: object
+    properties:
+      compatible:
+        const: atmel,tcb-pwm
+      reg:
+        description:
+          TCB channel to use for this PWM.
+
+        maxItems: 1
+      "#pwm-cells":
+        description:
+          The only third cell flag supported by this binding is
+          PWM_POLARITY_INVERTED.
+        const: 3
 
     required:
       - compatible
       - reg
 
+
 allOf:
   - if:
       properties:
@@ -158,7 +181,13 @@ examples:
                         compatible = "atmel,tcb-timer";
                         reg = <1>;
                 };
-        };
+
+                pwm@2 {
+                        compatible = "atmel,tcb-pwm";
+                        reg = <2>;
+                        #pwm-cells = <3>;
+                };
+         };
     /* TCB0 Capture with QDEC: */
         timer@...0c000 {
                 compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon";
-- 
2.26.2