linux-kernel - [PATCH 01/10] dt-bindings: pwm: Add SI-EN SN3112 PWM support

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Date: Wed, 24 Apr 2024 23:29:06 +0800
From: Xilin Wu via B4 Relay <devnull+wuxilin123.gmail.com@...nel.org>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Junhao Xie <bigfoot@...ssfun.cn>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <quic_jesszhan@...cinc.com>, Sam Ravnborg <sam@...nborg.org>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, 
 Tengfei Fan <quic_tengfan@...cinc.com>, 
 Molly Sophia <mollysophia379@...il.com>, Junhao Xie <bigfoot@...ssfun.cn>
Cc: linux-pwm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 linux-arm-msm@...r.kernel.org, Xilin Wu <wuxilin123@...il.com>
Subject: [PATCH 01/10] dt-bindings: pwm: Add SI-EN SN3112 PWM support

From: Junhao Xie <bigfoot@...ssfun.cn>

Add a new driver for the SI-EN SN3112 12-channel 8-bit PWM LED controller.

Signed-off-by: Junhao Xie <bigfoot@...ssfun.cn>
---
 .../devicetree/bindings/pwm/si-en,sn3112-pwm.yaml  | 55 ++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/Documentation/devicetree/bindings/pwm/si-en,sn3112-pwm.yaml b/Documentation/devicetree/bindings/pwm/si-en,sn3112-pwm.yaml
new file mode 100644
index 000000000000..2ab229ac40ce
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/si-en,sn3112-pwm.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/si-en,sn3112-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SI-EN SN3112 12-channel 8-bit PWM LED controller
+
+maintainers:
+  - Junhao Xie <bigfoot@...ssfun.cn>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: si-en,sn3112-pwm
+
+  reg:
+    const: 0x54
+    description: I2C slave address
+
+  sdb-gpios:
+    maxItems: 1
+    description: GPIO pin to hardware shutdown the device.
+
+  vdd-supply:
+    description: Chip vdd supply
+
+  "#pwm-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#pwm-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      pwm@54 {
+        compatible = "si-en,sn3112-pwm";
+        reg = <0x54>;
+        sdb-gpios = <&pio 1 1 GPIO_ACTIVE_LOW>; /* PA1 */
+        vdd-supply = <&reg_dcdc1>;
+        #pwm-cells = <1>;
+      };
+    };

-- 
2.44.0