[PATCH v3 2/2] dt-bindings: pwm: ti,pwm-omap-dmtimer: Update binding for yaml

[Tony Lindgren]

Update for yaml and remove the old txt binding.

As we can replace most of the custom timer API with standard Linux
frameworks such as clock framework, let's tag the properties for
ti,prescaler and ti,clock-source as deprecated.

Cc: linux-pwm at vger.kernel.org
Cc: Nishanth Menon <nm at ti.com>
Cc: Thierry Reding <thierry.reding at gmail.com>
Cc: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
Cc: Vignesh Raghavendra <vigneshr at ti.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
Signed-off-by: Tony Lindgren <tony at atomide.com>
---

Changes since v2:

- Reviewed-by collected from Krzysztof, no changes

Changes since v1:

- Fix issues noticed by Krzysztof

---
 .../bindings/pwm/pwm-omap-dmtimer.txt         | 22 -------
 .../bindings/pwm/ti,omap-dmtimer-pwm.yaml     | 59 +++++++++++++++++++
 2 files changed, 59 insertions(+), 22 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt
 create mode 100644 Documentation/devicetree/bindings/pwm/ti,omap-dmtimer-pwm.yaml

diff --git a/Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt b/Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt
deleted file mode 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-* OMAP PWM for dual-mode timers
-
-Required properties:
-- compatible: Shall contain "ti,omap-dmtimer-pwm".
-- ti,timers: phandle to PWM capable OMAP timer. See timer/ti,timer-dm.yaml for info
-  about these timers.
-- #pwm-cells: Should be 3. See pwm.yaml in this directory for a description of
-  the cells format.
-
-Optional properties:
-- ti,prescaler: Should be a value between 0 and 7, see the timers datasheet
-- ti,clock-source: Set dmtimer parent clock, values between 0 and 2:
-  - 0x00 - high-frequency system clock (timer_sys_ck)
-  - 0x01 - 32-kHz always-on clock (timer_32k_ck)
-  - 0x02 - external clock (timer_ext_ck, OMAP2 only)
-
-Example:
-	pwm9: dmtimer-pwm at 9 {
-		compatible = "ti,omap-dmtimer-pwm";
-		ti,timers = <&timer9>;
-		#pwm-cells = <3>;
-	};
diff --git a/Documentation/devicetree/bindings/pwm/ti,omap-dmtimer-pwm.yaml b/Documentation/devicetree/bindings/pwm/ti,omap-dmtimer-pwm.yaml
new file mode 100644
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/ti,omap-dmtimer-pwm.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/ti,omap-dmtimer-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI dual mode timer PWM controller
+
+maintainers:
+  - Tony Lindgren <tony at atomide.com>
+
+description:
+  TI dual mode timer instances have an IO pin for PWM capability
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: ti,omap-dmtimer-pwm
+
+  "#pwm-cells":
+    const: 3
+
+  ti,timers:
+    description: Timer instance phandle for the PWM
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+  ti,prescaler:
+    description: |
+      Legacy clock prescaler for timer. The timer counter is prescaled
+      with 2^n where n is the prescaler.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [ 0, 1, 2, 3, 4, 5, 6, 7 ]
+    deprecated: true
+
+  ti,clock-source:
+    description: |
+      Legacy clock for timer, please use assigned-clocks instead.
+      0x00 - high-frequency system clock (timer_sys_ck)
+      0x01 - 32-kHz always-on clock (timer_32k_ck)
+      0x02 - external clock (timer_ext_ck, OMAP2 only)
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [ 0, 1, 2 ]
+    deprecated: true
+
+required:
+  - compatible
+  - ti,timers
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    pwm9: pwm {
+      compatible = "ti,omap-dmtimer-pwm";
+      ti,timers = <&timer9>;
+      #pwm-cells = <3>;
+    };
-- 
2.38.1