dt-bindings: mfd: Convert stm32 low power timers bindings to json-schema

Convert the STM32 low power timers binding to DT schema format using json-schema

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Rob Herring <robh@kernel.org>

2 files changed, 120 insertions, 48 deletions

diff --git a/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml b/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml
new file mode 100644
index 000000000000..1a4cc5f3fb33
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml
@@ -0,0 +1,120 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/st,stm32-lptimer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics STM32 Low-Power Timers bindings
+
+description: |
+  The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several
+  functions
+   - PWM output (with programmable prescaler, configurable polarity)
+   - Trigger source for STM32 ADC/DAC (LPTIM_OUT)
+   - Several counter modes:
+     - quadrature encoder to detect angular position and direction of rotary
+       elements, from IN1 and IN2 input signals.
+     - simple counter from IN1 input signal.
+
+maintainers:
+  - Fabrice Gasnier <fabrice.gasnier@st.com>
+
+properties:
+  compatible:
+    const: st,stm32-lptimer
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: mux
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+  pwm:
+    type: object
+
+    properties:
+      compatible:
+        const: st,stm32-pwm-lp
+
+      "#pwm-cells":
+        const: 3
+
+    required:
+      - "#pwm-cells"
+      - compatible
+
+patternProperties:
+  "^trigger@[0-9]+$":
+    type: object
+
+    properties:
+      compatible:
+        const: st,stm32-lptimer-trigger
+
+      reg:
+        description: Identify trigger hardware block.
+        items:
+         minimum: 0
+         maximum: 2
+
+    required:
+      - compatible
+      - reg
+
+  counter:
+    type: object
+
+    properties:
+      compatible:
+        const: st,stm32-lptimer-counter
+
+    required:
+      - compatible
+
+required:
+  - "#address-cells"
+  - "#size-cells"
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/stm32mp1-clks.h>
+    timer@40002400 {
+      compatible = "st,stm32-lptimer";
+      reg = <0x40002400 0x400>;
+      clocks = <&timer_clk>;
+      clock-names = "mux";
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      pwm {
+        compatible = "st,stm32-pwm-lp";
+        #pwm-cells = <3>;
+      };
+
+      trigger@0 {
+        compatible = "st,stm32-lptimer-trigger";
+        reg = <0>;
+      };
+
+      counter {
+        compatible = "st,stm32-lptimer-counter";
+      };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt
deleted file mode 100644
index fb54e4dad5b3..000000000000
--- a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt
+++ /dev/null
@@ -1,48 +0,0 @@
-STMicroelectronics STM32 Low-Power Timer
-
-The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several
-functions:
-- PWM output (with programmable prescaler, configurable polarity)
-- Quadrature encoder, counter
-- Trigger source for STM32 ADC/DAC (LPTIM_OUT)
-
-Required properties:
-- compatible:		Must be "st,stm32-lptimer".
-- reg:			Offset and length of the device's register set.
-- clocks:		Phandle to the clock used by the LP Timer module.
-- clock-names:		Must be "mux".
-- #address-cells:	Should be '<1>'.
-- #size-cells:		Should be '<0>'.
-
-Optional subnodes:
-- pwm:			See ../pwm/pwm-stm32-lp.txt
-- counter:		See ../counter/stm32-lptimer-cnt.txt
-- trigger:		See ../iio/timer/stm32-lptimer-trigger.txt
-
-Example:
-
-	timer@40002400 {
-		compatible = "st,stm32-lptimer";
-		reg = <0x40002400 0x400>;
-		clocks = <&timer_clk>;
-		clock-names = "mux";
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		pwm {
-			compatible = "st,stm32-pwm-lp";
-			pinctrl-names = "default";
-			pinctrl-0 = <&lppwm1_pins>;
-		};
-
-		trigger@0 {
-			compatible = "st,stm32-lptimer-trigger";
-			reg = <0>;
-		};
-
-		counter {
-			compatible = "st,stm32-lptimer-counter";
-			pinctrl-names = "default";
-			pinctrl-0 = <&lptim1_in_pins>;
-		};
-	};