linux-kernel - [PATCH 3/8] dt-bindings: pwm: Add STM32 LPTimer PWM binding

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Message-ID: <1497628726-7563-4-git-send-email-fabrice.gasnier@st.com>
Date:   Fri, 16 Jun 2017 17:58:41 +0200
From:   Fabrice Gasnier <fabrice.gasnier@...com>
To:     <lee.jones@...aro.org>, <benjamin.gaignard@...aro.org>,
        <jic23@...nel.org>, <thierry.reding@...il.com>,
        <robh+dt@...nel.org>
CC:     <mark.rutland@....com>, <alexandre.torgue@...com>,
        <mcoquelin.stm32@...il.com>, <fabrice.gasnier@...com>,
        <benjamin.gaignard@...com>, <linux-iio@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-pwm@...r.kernel.org>
Subject: [PATCH 3/8] dt-bindings: pwm: Add STM32 LPTimer PWM binding

Add documentation for STMicroelectronics STM32 Low Power Timer
PWM binding.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...com>
---
 .../devicetree/bindings/pwm/pwm-stm32-lp.txt       | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/pwm-stm32-lp.txt

diff --git a/Documentation/devicetree/bindings/pwm/pwm-stm32-lp.txt b/Documentation/devicetree/bindings/pwm/pwm-stm32-lp.txt
new file mode 100644
index 0000000..8eebe31
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-stm32-lp.txt
@@ -0,0 +1,24 @@
+STMicroelectronics STM32 Low Power Timer PWM
+
+STM32 LP Timer provides single channel PWM.
+
+Must be a sub-node of an STM32 LP Timer device tree node.
+See ../mfd/stm32-lptimer.txt for details about the parent node.
+
+Required parameters:
+- compatible: Must be "st,stm32-pwm-lp".
+
+Optional properties:
+- A pinctrl state named "default" can be defined to set a pin in mode of
+  operation for PWM output on external pin.
+
+Example:
+	lptimer1: lptimer@...0002400 {
+		compatible = "st,stm32-lptimer";
+		...
+		pwm {
+			compatible = "st,stm32-pwm-lp";
+			pinctrl-names = "default";
+			pinctrl-0 = <&lppwm1_pins>;
+		};
+	};
-- 
1.9.1