linux-kernel - [PATCH v3 2/2] pwm: sun8i-v536: document device tree bindings

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Date:   Tue,  2 Mar 2021 20:40:23 +0800
From:   Ban Tao <fengzheng923@...il.com>
To:     thierry.reding@...il.com, u.kleine-koenig@...gutronix.de,
        lee.jones@...aro.org, robh+dt@...nel.org, mripard@...nel.org,
        wens@...e.org
Cc:     linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Ban Tao <fengzheng923@...il.com>
Subject: [PATCH v3 2/2] pwm: sun8i-v536: document device tree bindings

From: Ban Tao <fengzheng923@...il.com>

This adds binding documentation for sun8i-v536 SoC PWM driver.

Signed-off-by: Ban Tao <fengzheng923@...il.com>
---
 .../bindings/pwm/pwm-sun8i-v536.txt           | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sun8i-v536.txt

diff --git a/Documentation/devicetree/bindings/pwm/pwm-sun8i-v536.txt b/Documentation/devicetree/bindings/pwm/pwm-sun8i-v536.txt
new file mode 100644
index 000000000000..ab3f4fe0560a
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-sun8i-v536.txt
@@ -0,0 +1,24 @@
+Allwinner sun8i-v536 SoC PWM controller
+
+Required properties:
+ - compatible: should be "allwinner,<name>-pwm"
+   "allwinner,sun8i-v833-pwm"
+   "allwinner,sun8i-v536-pwm"
+   "allwinner,sun50i-r818-pwm"
+   "allwinner,sun50i-a133-pwm"
+   "allwinner,sun50i-r329-pwm"
+ - reg: physical base address and length of the controller's registers
+ - #pwm-cells: should be 3. See pwm.txt in this directory for a description of
+   the cells format.
+ - clocks: From common clock binding, handle to the parent clock.
+ - resets: From reset clock binding, handle to the parent clock.
+
+Example:
+
+	pwm: pwm@...a0000 {
+		compatible = "allwinner,sun50i-r818-pwm";
+		reg = <0x0300a000 0x3ff>;
+		clocks = <&ccu CLK_BUS_PWM>;
+		resets = <&ccu RST_BUS_PWM>;
+		#pwm-cells = <3>;
+	};
-- 
2.29.0