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Date: Tue, 30 Jul 2013 00:42:29 +0000
From: "Kim, Milo" <Milo.Kim@...com>
To: "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
CC: "lee.jones@...aro.org" <lee.jones@...aro.org>,
"Samuel Ortiz (sameo@...ux.intel.com)" <sameo@...ux.intel.com>,
"broonie@...nel.org" <broonie@...nel.org>,
"linus.walleij@...aro.org" <linus.walleij@...aro.org>,
"thierry.reding@...il.com" <thierry.reding@...il.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-pwm@...r.kernel.org" <linux-pwm@...r.kernel.org>
Subject: [PATCH v2 4/4] Documentation: dt: bindings: add LP3943 bindings
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>
Cc: Thierry Reding <thierry.reding@...il.com>
Signed-off-by: Milo Kim <milo.kim@...com>
---
.../devicetree/bindings/gpio/gpio-lp3943.txt | 42 +++++++++++++
Documentation/devicetree/bindings/mfd/lp3943.txt | 33 ++++++++++
.../devicetree/bindings/pwm/pwm-lp3943.txt | 65 ++++++++++++++++++++
3 files changed, 140 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..952fefd
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-lp3943.txt
@@ -0,0 +1,42 @@
+TI/National Semiconductor LP3943 GPIO controller
+
+Required properties:
+ - compatible: "ti,lp3943-gpio"
+ - gpio-controller: device node as a GPIO controller
+ - #gpio-cells: Should be two.
+ 1) pin number offset
+ 2) GPIO polarity
+ 0 = active high, 1 = active low
+
+For the GPIO properties please refer to:
+Documentation/devicetree/bindings/gpio/gpio.txt
+
+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 1>; /* active-low */
+ };
+
+ indicator2 {
+ label = "indi2";
+ gpios = <&gpioex 10 1>; /* 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..ef62784
--- /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 (u8). 0x60 ~ 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 = <3>;
+ ti,pwm0 = < 8 9 10 >;
+ ti,pwm1 = <16>;
+ };
+};
diff --git a/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt b/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt
new file mode 100644
index 0000000..3a6c7fc
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt
@@ -0,0 +1,65 @@
+TI/National Semiconductor LP3943 PWM controller
+
+Required properties:
+ - compatible: "ti,lp3943-pwm"
+ - #pwm-cells: Should be three.
+ 1) index of PWM controller
+ 0 = PWM 0, 1 = PWM 1
+ 2) PWM signal period in nanoseconds
+ min = 6250, max = 1600000
+ 3) bitmask of optional PWM polarity flags
+ 0 = normal, 1 = inversed
+ - ti,pwm0 or ti,pwm1: Output pin number(s) for PWM port 0 or 1.
+ 0 = invalid
+ 1 = output 0
+ 2 = output 1
+ .
+ .
+ 16 = output 15
+
+For the PWM properties please refer to:
+Documentation/devicetree/bindings/pwm/pwm.txt
+
+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 7, 8 and 9
+ * PWM 1 : output 15
+ */
+ pwm3943: pwm {
+ compatible = "ti,lp3943-pwm";
+ #pwm-cells = <3>;
+ ti,pwm0 = < 8 9 10 >;
+ ti,pwm1 = <16>;
+ };
+ };
+
+};
+
+/* LEDs control with PWM 0 of LP3943 */
+pwmleds {
+ compatible = "pwm-leds";
+ rgb {
+ label = "indi::rgb";
+ pwms = <&pwm3943 0 10000 0>;
+ max-brightness = <255>;
+ };
+};
+
+&i2c4 {
+ /* Backlight control with PWM 1 of LP3943 */
+ backlight@2c {
+ compatible = "ti,lp8557";
+ reg = <0x2c>;
+
+ pwms = <&pwm3943 1 10000 1>; /* inversed */
+ pwm-names = "lp8557";
+ };
+};
--
1.7.9.5
Best Regards,
Milo
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