Rob
Thanks for the review.
On 10/12/2018 11:27 AM, Rob Herring wrote:
> On Thu, Oct 11, 2018 at 11:51:18AM -0500, Dan Murphy wrote:
>> Add the device tree bindings for the lm3697
>> LED driver for backlighting and display.
>
> Bindings are for h/w, not drivers...
>
ACK
Dan
>>
>> Signed-off-by: Dan Murphy <dmurphy@xxxxxx>
>> ---
>> .../devicetree/bindings/leds/leds-lm3697.txt | 98 +++++++++++++++++++
>> 1 file changed, 98 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/leds/leds-lm3697.txt
>>
>> diff --git a/Documentation/devicetree/bindings/leds/leds-lm3697.txt b/Documentation/devicetree/bindings/leds/leds-lm3697.txt
>> new file mode 100644
>> index 000000000000..4bb2ed51025b
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/leds/leds-lm3697.txt
>> @@ -0,0 +1,98 @@
>> +* Texas Instruments - LM3697 Highly Efficient White LED Driver
>> +
>> +The LM3697 11-bit LED driver provides high-
>> +performance backlight dimming for 1, 2, or 3 series
>> +LED strings while delivering up to 90% efficiency.
>> +
>> +This device is suitable for display and keypad Lighting
>> +
>> +Required properties:
>> + - compatible:
>> + "ti,lm3697"
>> + - 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 - LED is Controlled by bank A
>> + 1 - LED is Controlled by bank B
>> + - led-sources : Indicates which HVLED string is associated to which
>> + control bank. Each element in the array is associated
>> + with a specific HVLED string. Element 0 is HVLED1,
>> + element 1 is HVLED2 and element 2 HVLED3.
>> + Additional information is contained
>> + in Documentation/devicetree/bindings/leds/common.txt
>> + 0 - HVLED is not active in this control bank
>> + 1 - HVLED 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:
>> +
>> +HVLED string 1 and 3 are controlled by control bank A and HVLED 2 string is
>> +controlled by control bank B.
>> +
>> +led-controller@36 {
>> + compatible = "ti,lm3697";
>> + reg = <0x36>;
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
>> + vled-supply = <&vbatt>;
>> +
>> + led@0 {
>> + reg = <0>;
>> + led-sources = <1 0 1>;
>> + runtime-ramp-up-msec = <5000>;
>> + runtime-ramp-down-msec = <1000>;
>> + label = "white:first_backlight_cluster";
>> + linux,default-trigger = "backlight";
>> + };
>> +
>> + led@1 {
>> + reg = <1>;
>> + led-sources = <0 1 0>;
>> + runtime-ramp-up-msec = <500>;
>> + runtime-ramp-down-msec = <1000>;
>> + label = "white:second_backlight_cluster";
>> + linux,default-trigger = "backlight";
>> + };
>> +}
>> +
>> +All HVLED strings controlled by control bank A
>> +
>> +led-controller@36 {
>> + compatible = "ti,lm3697";
>> + reg = <0x36>;
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
>> + vled-supply = <&vbatt>;
>> +
>> + led@0 {
>> + reg = <0>;
>> + led-sources = <1 1 1>;
>> + runtime-ramp-up-msec = <500>;
>> + runtime-ramp-down-msec = <1000>;
>> + label = "white:backlight_cluster";
>> + linux,default-trigger = "backlight";
>> + };
>> +}
>> +
>> +For more product information please see the link below:
>> +http://www.ti.com/lit/ds/symlink/lm3697.pdf
>> --
>> 2.19.0
>>
--
------------------
Dan Murphy
