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Message-ID: <1386295853-22558-1-git-send-email-milo.kim@ti.com>
Date: Fri, 6 Dec 2013 11:10:53 +0900
From: Milo Kim <milo.kim@...com>
To: Lee Jones <lee.jones@...aro.org>,
Samuel Ortiz <sameo@...ux.intel.com>
CC: <linux-kernel@...r.kernel.org>, <linux-pwm@...r.kernel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Thierry Reding <thierry.reding@...il.com>,
<devicetree@...r.kernel.org>, Milo Kim <milo.kim@...com>
Subject: [PATCH v5 4/4] Documentation: add LP3943 DT bindings and document
Bindings for LP3943 MFD, GPIO and PWM controller are added.
Cc: devicetree@...r.kernel.org
Cc: Lee Jones <lee.jones@...aro.org>
Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Samuel Ortiz <sameo@...ux.intel.com>
Signed-off-by: Milo Kim <milo.kim@...com>
Acked-by: Thierry Reding <thierry.reding@...il.com>
---
.../devicetree/bindings/gpio/gpio-lp3943.txt | 37 +++++++++++++
Documentation/devicetree/bindings/mfd/lp3943.txt | 33 +++++++++++
.../devicetree/bindings/pwm/pwm-lp3943.txt | 58 ++++++++++++++++++++
3 files changed, 128 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/gpio-lp3943.txt
create mode 100644 Documentation/devicetree/bindings/mfd/lp3943.txt
create mode 100644 Documentation/devicetree/bindings/pwm/pwm-lp3943.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-lp3943.txt b/Documentation/devicetree/bindings/gpio/gpio-lp3943.txt
new file mode 100644
index 0000000..80fcb7d
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-lp3943.txt
@@ -0,0 +1,37 @@
+TI/National Semiconductor LP3943 GPIO controller
+
+Required properties:
+ - compatible: "ti,lp3943-gpio"
+ - gpio-controller: Marks the device node as a GPIO controller.
+ - #gpio-cells: Should be 2. See gpio.txt in this directory for a
+ description of the cells format.
+
+Example:
+Simple LED controls with LP3943 GPIO controller
+
+&i2c4 {
+ lp3943@60 {
+ compatible = "ti,lp3943";
+ reg = <0x60>;
+
+ gpioex: gpio {
+ compatible = "ti,lp3943-gpio";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+ };
+};
+
+leds {
+ compatible = "gpio-leds";
+ indicator1 {
+ label = "indi1";
+ gpios = <&gpioex 9 GPIO_ACTIVE_LOW>;
+ };
+
+ indicator2 {
+ label = "indi2";
+ gpios = <&gpioex 10 GPIO_ACTIVE_LOW>;
+ default-state = "off";
+ };
+};
diff --git a/Documentation/devicetree/bindings/mfd/lp3943.txt b/Documentation/devicetree/bindings/mfd/lp3943.txt
new file mode 100644
index 0000000..e8591d6
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/lp3943.txt
@@ -0,0 +1,33 @@
+TI/National Semiconductor LP3943 MFD driver
+
+Required properties:
+ - compatible: "ti,lp3943"
+ - reg: I2C slave address. From 0x60 to 0x67.
+
+LP3943 consists of two sub-devices, lp3943-gpio and lp3943-pwm.
+
+For the LP3943 GPIO properties please refer to:
+Documentation/devicetree/bindings/gpio/gpio-lp3943.txt
+
+For the LP3943 PWM properties please refer to:
+Documentation/devicetree/bindings/pwm/pwm-lp3943.txt
+
+Example:
+
+lp3943@60 {
+ compatible = "ti,lp3943";
+ reg = <0x60>;
+
+ gpioex: gpio {
+ compatible = "ti,lp3943-gpio";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ pwm3943: pwm {
+ compatible = "ti,lp3943-pwm";
+ #pwm-cells = <2>;
+ ti,pwm0 = <8 9 10>;
+ ti,pwm1 = <15>;
+ };
+};
diff --git a/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt b/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt
new file mode 100644
index 0000000..7bd9d3b
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt
@@ -0,0 +1,58 @@
+TI/National Semiconductor LP3943 PWM controller
+
+Required properties:
+ - compatible: "ti,lp3943-pwm"
+ - #pwm-cells: Should be 2. See pwm.txt in this directory for a
+ description of the cells format.
+ Note that this hardware limits the period length to the
+ range 6250~1600000.
+ - ti,pwm0 or ti,pwm1: Output pin number(s) for PWM channel 0 or 1.
+ 0 = output 0
+ 1 = output 1
+ .
+ .
+ 15 = output 15
+
+Example:
+PWM 0 is for RGB LED brightness control
+PWM 1 is for brightness control of LP8557 backlight device
+
+&i2c3 {
+ lp3943@60 {
+ compatible = "ti,lp3943";
+ reg = <0x60>;
+
+ /*
+ * PWM 0 : output 8, 9 and 10
+ * PWM 1 : output 15
+ */
+ pwm3943: pwm {
+ compatible = "ti,lp3943-pwm";
+ #pwm-cells = <2>;
+ ti,pwm0 = <8 9 10>;
+ ti,pwm1 = <15>;
+ };
+ };
+
+};
+
+/* LEDs control with PWM 0 of LP3943 */
+pwmleds {
+ compatible = "pwm-leds";
+ rgb {
+ label = "indi::rgb";
+ pwms = <&pwm3943 0 10000>;
+ max-brightness = <255>;
+ };
+};
+
+&i2c4 {
+ /* Backlight control with PWM 1 of LP3943 */
+ backlight@2c {
+ compatible = "ti,lp8557";
+ reg = <0x2c>;
+
+ pwms = <&pwm3943 1 10000>;
+ pwm-names = "lp8557";
+ };
+};
--
1.7.10.4
--
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