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dt-bindings: mfd: Add lm36274 bindings to ti-lmu
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Add the LM36274 backlight driver with regulator support.
This is a multi-function device for backlight applications.

Backlight properties will be documented in it's a supplemental
bindings document.

Regulator support is documented in the regulator/lm363x-regulator.txt

http://www.ti.com/lit/ds/symlink/lm36274.pdf

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
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Dan Murphy authored and Jacek Anaszewski committed Jun 6, 2019
1 parent 5c1d824 commit 4665743
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54 changes: 54 additions & 0 deletions Documentation/devicetree/bindings/mfd/ti-lmu.txt
Original file line number Diff line number Diff line change
Expand Up @@ -8,18 +8,21 @@ TI LMU driver supports lighting devices below.
LM3632 Backlight and regulator
LM3633 Backlight, LED and fault monitor
LM3695 Backlight
LM36274 Backlight and regulator

Required properties:
- compatible: Should be one of:
"ti,lm3631"
"ti,lm3632"
"ti,lm3633"
"ti,lm3695"
"ti,lm36274"
- reg: I2C slave address.
0x11 for LM3632
0x29 for LM3631
0x36 for LM3633
0x63 for LM3695
0x11 for LM36274

Optional properties:
- enable-gpios: A GPIO specifier for hardware enable pin.
Expand Down Expand Up @@ -50,12 +53,14 @@ Optional nodes:
- compatible: Should be one of:
"ti,lm3633-fault-monitor"
- leds: LED properties for LM3633. Please refer to [2].
LED properties for LM36274. Please refer to [4].
- regulators: Regulator properties for LM3631 and LM3632.
Please refer to [3].

[1] ../leds/backlight/ti-lmu-backlight.txt
[2] ../leds/leds-lm3633.txt
[3] ../regulator/lm363x-regulator.txt
[4] ../leds/leds-lm36274.txt

lm3631@29 {
compatible = "ti,lm3631";
Expand Down Expand Up @@ -213,3 +218,52 @@ lm3695@63 {
};
};
};

lm36274@11 {
compatible = "ti,lm36274";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x11>;

enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;
regulators {
#address-cells = <1>;
#size-cells = <0>;
compatible = "ti,lm363x-regulator";

enable-gpios = <&pioC 0 GPIO_ACTIVE_HIGH>,
<&pioC 1 GPIO_ACTIVE_HIGH>;

vboost {
regulator-name = "lcd_boost";
regulator-min-microvolt = <4000000>;
regulator-max-microvolt = <7150000>;
regulator-always-on;
};

vpos {
regulator-name = "lcd_vpos";
regulator-min-microvolt = <4000000>;
regulator-max-microvolt = <6500000>;
};

vneg {
regulator-name = "lcd_vneg";
regulator-min-microvolt = <4000000>;
regulator-max-microvolt = <6500000>;
};
};

backlight {
#address-cells = <1>;
#size-cells = <0>;
compatible = "ti,lm36274-backlight";

led@0 {
reg = <0>;
led-sources = <0 2>;
label = "white:backlight_cluster";
linux,default-trigger = "backlight";
};
};
};

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