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Message-ID: <20181011165123.32198-9-dmurphy@ti.com>
Date: Thu, 11 Oct 2018 11:51:22 -0500
From: Dan Murphy <dmurphy@...com>
To: <robh+dt@...nel.org>, <jacek.anaszewski@...il.com>, <pavel@....cz>
CC: <lee.jones@...aro.org>, <tony@...mide.com>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-leds@...r.kernel.org>, Dan Murphy <dmurphy@...com>
Subject: [PATCH v3 8/9] dt-bindings: leds: Add support for the LM3633
Add support for the TI LM3633 LED driver.
This device has 9 control banks 3 high voltage
LED channels and 6 low voltage LED channels.
Data sheet:
http://www.ti.com/lit/ds/symlink/lm3633.pdf
Signed-off-by: Dan Murphy <dmurphy@...com>
---
.../devicetree/bindings/leds/leds-lm3633.txt | 102 ++++++++++++++++++
1 file changed, 102 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/leds-lm3633.txt
diff --git a/Documentation/devicetree/bindings/leds/leds-lm3633.txt b/Documentation/devicetree/bindings/leds/leds-lm3633.txt
new file mode 100644
index 000000000000..d791b891ea6e
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-lm3633.txt
@@ -0,0 +1,102 @@
+* Texas Instruments - LM3633 Lighting Power Solution for Smartphone Handsets
+
+The LM3633 is a complete power source for
+backlight, keypad, and indicator LEDs in smartphone
+handsets.
+
+This device is suitable for display and keypad Lighting
+
+Required properties:
+ - compatible:
+ "ti,lm3633"
+ - reg : I2C slave address
+ - #address-cells : 1
+ - #size-cells : 0
+
+Optional properties:
+ - enable-gpios : GPIO pin to enable/disable the device
+ - vled-supply : LED supply
+
+Required child properties:
+ - reg : 0 - HVLED is Controlled by bank A
+ 1 - HVLED is Controlled by bank B
+ 2,3,4 - LVLED1, 2 and 3 are Controlled by bank C, D and E
+ 5,6,7 - LVLED4, 5 and 6 are Controlled by bank F, G and H
+ - led-sources : Indicates which LED string is associated to which
+ control bank.
+ 0 - LED is not active in this control bank
+ 1 - LED string is controlled by this control bank
+
+Optional child properties:
+ - runtime-ramp-up-msec: Current ramping from one brightness level to
+ the a higher brightness level.
+ Range from 2048 us - 117.44 s
+ - runtime-ramp-down-msec: Current ramping from one brightness level to
+ the a lower brightness level.
+ Range from 2048 us - 117.44 s
+ - label : see Documentation/devicetree/bindings/leds/common.txt
+ - linux,default-trigger :
+ see Documentation/devicetree/bindings/leds/common.txt
+
+Example:
+Control bank C output to 3 LVLEDs and Control F, G and H have independent
+controls of the LVLEDs.
+
+led-controller@36 {
+ compatible = "ti,lm3633";
+ reg = <0x36>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
+ led@0 {
+ reg = <0>;
+ led-sources = < 1 0 1 >;
+ label = "white:backlight";
+ ramp-up-ms = <100000>;
+ ramp-down-ms = <1000>;
+ linux,default-trigger = "backlight";
+ };
+
+ led@1 {
+ reg = <1>;
+ led-sources = < 0 1 0 >;
+ label = "white:light";
+ ramp-up-ms = <100000>;
+ ramp-down-ms = <1000>;
+ };
+
+ led@2 {
+ reg = <2>;
+ led-sources = <1>;
+ ramp-up-ms = <100000>;
+ ramp-down-ms = <1000>;
+ label = "white:indicator1";
+ };
+
+ led@5 {
+ reg = <5>;
+ led-sources = <1>;
+ ramp-up-ms = <100000>;
+ ramp-down-ms = <1000>;
+ label = "red:light";
+ };
+
+ led@6 {
+ reg = <6>;
+ led-sources = <1>;
+ ramp-up-ms = <41940>;
+ ramp-down-ms = <1000>;
+ label = "green:light";
+ };
+
+ led@7 {
+ reg = <7>;
+ led-sources = <1>;
+ ramp-up-ms = <100000>;
+ ramp-down-ms = <1000>;
+ label = "blue:light";
+ };
+};
+For more product information please see the link below:
+http://www.ti.com/lit/ds/symlink/lm3633.pdf
--
2.19.0
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