From: Jacek Anaszewski <jacek.anaszewski@gmail.com>
To: Dan Murphy <dmurphy@ti.com>, robh+dt@kernel.org, pavel@ucw.cz
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-leds@vger.kernel.org
Subject: Re: [PATCH 1/2] dt: bindings: lp5024: Introduce the lp5024 and lp5018 RGB driver
Date: Tue, 8 Jan 2019 22:16:48 +0100 [thread overview]
Message-ID: <6c62956e-7789-58ba-5437-f2e033f2825c@gmail.com> (raw)
In-Reply-To: <2d2d5dcd-9c23-e901-daac-9b79aa5a5e82@ti.com>
On 1/8/19 9:53 PM, Dan Murphy wrote:
> Jacek
>
> On 1/8/19 2:33 PM, Jacek Anaszewski wrote:
>> Dan,
>>
>> On 12/19/18 5:26 PM, Dan Murphy wrote:
>>> Introduce the bindings for the Texas Instruments LP5024 and the LP5018
>>> RGB LED device driver. The LP5024/18 can control RGB LEDs individually
>>> or as part of a control bank group. These devices have the ability
>>> to adjust the mixing control for the RGB LEDs to obtain different colors
>>> independent of the overall brightness of the LED grouping.
>>>
>>> Datasheet:
>>> http://www.ti.com/lit/ds/symlink/lp5024.pdf
>>>
>>> Signed-off-by: Dan Murphy <dmurphy@ti.com>
>>> ---
>>> .../devicetree/bindings/leds/leds-lp5024.txt | 63 +++++++++++++++++++
>>> 1 file changed, 63 insertions(+)
>>> create mode 100644 Documentation/devicetree/bindings/leds/leds-lp5024.txt
>>>
>>> diff --git a/Documentation/devicetree/bindings/leds/leds-lp5024.txt b/Documentation/devicetree/bindings/leds/leds-lp5024.txt
>>> new file mode 100644
>>> index 000000000000..9567aa6f7813
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/leds/leds-lp5024.txt
>>> @@ -0,0 +1,63 @@
>>> +* Texas Instruments - LP5024/18 RGB LED driver
>>> +
>>> +The LM3692x is an ultra-compact, highly efficient,
>>> +white-LED driver designed for LCD display backlighting.
>>> +
>>> +The main difference between the LP5024 and L5018 is the number of
>>> +RGB LEDs they support. The LP5024 supports twenty four strings while the
>>> +LP5018 supports eighteen strings.
>>> +
>>> +Required properties:
>>> + - compatible:
>>> + "ti,lp5018"
>>> + "ti,lp5024"
>>> + - 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 : Is the child node iteration.
>>> + - led-sources : LP5024 - 0 - 7
>>> + LP5018 - 0 - 5
>>> + Declares the LED string or strings that the child node
>>> + will control. If ti,control-bank is set then this
>>> + property will contain multiple LED IDs.
>>> +
>>> +Optional child properties:
>>> + - label : see Documentation/devicetree/bindings/leds/common.txt
>>> + - linux,default-trigger :
>>> + see Documentation/devicetree/bindings/leds/common.txt
>>> + - ti,control-bank : Indicates that the LED strings declared in the
>>> + led-sources property are grouped within a control
>>> + bank for brightness and mixing control.
>>> +
>>> +Example:
>>> +
>>> +led-controller@28 {
>>> + compatible = "ti,lp5024";
>>> + reg = <0x28>;
>>> + #address-cells = <1>;
>>> + #size-cells = <0>;
>>> +
>>> + enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
>>> + vled-supply = <&vbatt>;
>>> +
>>> + led@0 {
>>> + reg = <0>;
>>> + led-sources = <1>;
>>> + };
>>> +
>>> + led@1 {
>>> + reg = <1>;
>>> + led-sources = <0 6>;
>>> + ti,control-bank;
>>
>> Do you really need ti,control-bank? Doesn't led-sources array size
>> greater than 1 mean that the node describes control bank?
>>
>
> That will work too.
>> Also, does it make sense to have only two LEDs in the bank?
>
> The array can populate all 7 LEDs in a single node. I only show 2 here as the example.
> See the description above of the led-sources
OK, I confused RGB LED modules with banks.
Shouldn't we allow for defining either strings or RGB LED
triplets somehow then?
--
Best regards,
Jacek Anaszewski
next prev parent reply other threads:[~2019-01-08 21:16 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-19 16:26 [PATCH 0/2] LP5024/18 LED introduction Dan Murphy
2018-12-19 16:26 ` [PATCH 1/2] dt: bindings: lp5024: Introduce the lp5024 and lp5018 RGB driver Dan Murphy
2018-12-28 23:53 ` Rob Herring
2018-12-31 18:54 ` Dan Murphy
2019-01-08 20:33 ` Jacek Anaszewski
2019-01-08 20:53 ` Dan Murphy
2019-01-08 21:16 ` Jacek Anaszewski [this message]
2019-01-08 21:22 ` Dan Murphy
2019-01-09 20:12 ` Jacek Anaszewski
2019-01-09 21:12 ` Dan Murphy
2019-01-09 21:28 ` Jacek Anaszewski
2019-01-09 21:31 ` Dan Murphy
2019-01-10 18:44 ` Jacek Anaszewski
2019-01-10 19:22 ` Dan Murphy
2019-01-10 19:57 ` Jacek Anaszewski
2019-01-10 20:43 ` Dan Murphy
2019-01-10 22:03 ` Jacek Anaszewski
2019-01-10 23:51 ` Dan Murphy
2019-01-11 12:38 ` Dan Murphy
2019-01-11 21:52 ` Jacek Anaszewski
2019-01-12 17:09 ` Dan Murphy
2019-01-12 19:48 ` Jacek Anaszewski
2019-01-14 12:27 ` Dan Murphy
2019-01-14 20:11 ` Jacek Anaszewski
2019-01-14 20:14 ` Dan Murphy
2019-01-14 20:28 ` Jacek Anaszewski
2019-01-14 20:29 ` Dan Murphy
2018-12-19 16:26 ` [PATCH 2/2] leds: lp5024: Add the LP5024/18 RGB LED driver Dan Murphy
2018-12-19 19:04 ` Dan Murphy
2018-12-19 19:34 ` Pavel Machek
2018-12-19 19:41 ` Dan Murphy
2018-12-19 20:10 ` Pavel Machek
2018-12-19 20:41 ` Dan Murphy
2018-12-19 21:36 ` Jacek Anaszewski
2018-12-19 21:50 ` Dan Murphy
2018-12-20 12:40 ` Vesa Jääskeläinen
2018-12-20 13:56 ` Dan Murphy
2019-01-01 13:45 ` Vesa Jääskeläinen
2019-01-03 22:05 ` Jacek Anaszewski
2019-01-03 23:19 ` Vesa Jääskeläinen
2019-01-03 23:34 ` Pavel Machek
2019-01-04 19:49 ` Vesa Jääskeläinen
2019-01-04 20:43 ` Pavel Machek
2019-01-04 19:12 ` Jacek Anaszewski
2019-01-04 20:12 ` Pavel Machek
2019-01-04 21:37 ` Jacek Anaszewski
2019-01-04 22:07 ` Pavel Machek
2019-01-05 12:16 ` Jacek Anaszewski
2019-01-05 12:31 ` Pavel Machek
2019-01-05 13:16 ` Jacek Anaszewski
2019-01-05 22:12 ` Generic RGB LED support was " Pavel Machek
2019-01-06 15:52 ` Jacek Anaszewski
2019-01-07 19:13 ` Jacek Anaszewski
2019-01-07 19:36 ` Dan Murphy
2019-01-07 20:59 ` Jacek Anaszewski
2019-01-07 21:14 ` Dan Murphy
2019-01-08 21:18 ` Jacek Anaszewski
2019-01-08 21:25 ` Dan Murphy
2019-01-10 12:46 ` Dan Murphy
2019-01-10 19:23 ` Jacek Anaszewski
2019-01-10 19:58 ` Dan Murphy
2019-01-10 21:02 ` Jacek Anaszewski
2019-01-10 21:07 ` Dan Murphy
2019-01-08 22:59 ` Pavel Machek
2019-01-09 7:11 ` Vesa Jääskeläinen
2019-01-13 16:37 ` Jacek Anaszewski
2019-01-05 0:39 ` Vesa Jääskeläinen
2019-01-07 19:34 ` Dan Murphy
2019-01-09 6:20 ` Vesa Jääskeläinen
2019-01-07 21:13 ` Jacek Anaszewski
2019-01-07 21:15 ` Dan Murphy
2019-01-09 6:46 ` Vesa Jääskeläinen
2019-01-13 16:36 ` Jacek Anaszewski
2018-12-20 20:31 ` Jacek Anaszewski
2018-12-21 7:32 ` Jacek Anaszewski
2018-12-21 13:05 ` Dan Murphy
2018-12-29 18:28 ` Jacek Anaszewski
2018-12-29 19:07 ` Pavel Machek
2018-12-30 17:09 ` Jacek Anaszewski
2018-12-30 17:35 ` Pavel Machek
2018-12-31 15:43 ` Jacek Anaszewski
2018-12-31 15:47 ` Jacek Anaszewski
2018-12-31 19:15 ` Dan Murphy
2019-01-01 14:42 ` Jacek Anaszewski
2019-01-01 18:11 ` Dan Murphy
2019-01-01 22:06 ` Jacek Anaszewski
2018-12-31 16:28 ` Pavel Machek
2019-01-01 14:26 ` Jacek Anaszewski
2018-12-19 22:03 ` Pavel Machek
2018-12-19 22:08 ` Dan Murphy
2018-12-19 22:27 ` Pavel Machek
2018-12-20 1:31 ` Dan Murphy
2018-12-20 9:06 ` Pavel Machek
2018-12-20 14:03 ` Dan Murphy
2019-01-08 21:10 ` Jacek Anaszewski
2019-01-08 21:17 ` Dan Murphy
2019-07-22 20:59 ` Backlight in motorola Droid 4 Pavel Machek
2019-07-23 15:53 ` Dan Murphy
2019-07-24 8:22 ` Pavel Machek
2019-07-24 12:45 ` Pavel Machek
2019-07-24 15:10 ` Dan Murphy
2019-07-24 15:22 ` Dan Murphy
2019-07-26 14:38 ` Dan Murphy
2019-07-29 22:00 ` Pavel Machek
2019-07-30 18:21 ` Dan Murphy
2019-07-30 21:52 ` Pavel Machek
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