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Date: Fri, 11 Oct 2019 19:54:05 -0500
From: Dan Murphy <dmurphy@...com>
To: Jacek Anaszewski <jacek.anaszewski@...il.com>, <pavel@....cz>
CC: <linux-leds@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
Tony Lindgren <tony@...mide.com>,
Benoît Cousson <bcousson@...libre.com>,
Linus Walleij <linus.walleij@...aro.org>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
NXP Linux Team <linux-imx@....com>
Subject: Re: [PATCH v12 08/16] dt: bindings: lp55xx: Update binding for
Multicolor Framework
Jacek
On 10/11/19 3:15 PM, Jacek Anaszewski wrote:
> Dan,
>
> On 10/11/19 3:06 PM, Dan Murphy wrote:
>> Update the DT binding to include the properties to use the
>> multicolor framework for the devices that use the LP55xx
>> framework.
>>
>> Signed-off-by: Dan Murphy <dmurphy@...com>
>> CC: Tony Lindgren <tony@...mide.com>
>> CC: "Benoît Cousson" <bcousson@...libre.com>
>> CC: Linus Walleij <linus.walleij@...aro.org>
>> CC: Shawn Guo <shawnguo@...nel.org>
>> CC: Sascha Hauer <s.hauer@...gutronix.de>
>> CC: Pengutronix Kernel Team <kernel@...gutronix.de>
>> CC: Fabio Estevam <festevam@...il.com>
>> CC: NXP Linux Team <linux-imx@....com>
>> ---
>> .../devicetree/bindings/leds/leds-lp55xx.txt | 149 +++++++++++++++---
>> 1 file changed, 124 insertions(+), 25 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
>> index bfe2805c5534..736a2e1538be 100644
>> --- a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
>> +++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
>> @@ -1,6 +1,8 @@
>> Binding for TI/National Semiconductor LP55xx LED Drivers
>>
>> Required properties:
>> +- #address-cells: 1
>> +- #size-cells: 0
>> - compatible: one of
>> national,lp5521
>> national,lp5523
>> @@ -14,6 +16,18 @@ Required properties:
>> Each child has own specific current settings
>> - led-cur: Current setting at each LED channel (mA x10, 0 if LED is not connected)
>> - max-cur: Maximun current at each LED channel.
>> +- reg: Output channel for the LED. This is zero based channel identifier and
>> + the data sheet is a one based channel identifier.
>> + reg value to output to LED output number
>> + D1 = reg value is 0
>> + D2 = reg value is 1
>> + D3 = reg value is 2
>> + D4 = reg value is 3
>> + D5 = reg value is 4
>> + D6 = reg value is 5
>> + D7 = reg value is 6
>> + D8 = reg value is 7
>> + D9 = reg value is 8
>>
>> Optional properties:
>> - enable-gpio: GPIO attached to the chip's enable pin
>> @@ -35,23 +49,28 @@ example 1) LP5521
>> on channel 0.
>>
>> lp5521@32 {
> While at it let's fix node prefix to led-controller.
> It will not break anyone and yet it will adapt the node naming
> to what is now recommended.
I would love to do that but honestly I prefer to fix that in a different
patch series and not add more changes to this patch review.
>
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> compatible = "national,lp5521";
>> reg = <0x32>;
>> label = "lp5521_pri";
>> clock-mode = /bits/ 8 <2>;
>>
>> - chan0 {
>> + chan@0 {
> Similarly in case of every child node:
>
> s/chan/led/
>
>> + reg = <0>;
>> led-cur = /bits/ 8 <0x2f>;
>> max-cur = /bits/ 8 <0x5f>;
>> linux,default-trigger = "heartbeat";
>> };
>>
>> - chan1 {
>> + chan@1 {
>> + reg = <1>;
>> led-cur = /bits/ 8 <0x2f>;
>> max-cur = /bits/ 8 <0x5f>;
>> };
>>
>> - chan2 {
>> + chan@2 {
>> + reg = <2>;
>> led-cur = /bits/ 8 <0x2f>;
>> max-cur = /bits/ 8 <0x5f>;
>> };
>> @@ -70,59 +89,70 @@ ASEL1 ASEL0 Address
>> VEN VEN 35h
>>
>> lp5523@32 {
> s/lp5523/led-controller/
>
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> compatible = "national,lp5523";
>> reg = <0x32>;
>> clock-mode = /bits/ 8 <1>;
>>
>> - chan0 {
>> + chan@0 {
>> + reg = <0>;
>> chan-name = "d1";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan1 {
>> + chan@1 {
>> + reg = <1>;
>> chan-name = "d2";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan2 {
>> + chan@2 {
>> + reg = <2>;
>> chan-name = "d3";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan3 {
>> + chan@3 {
>> + reg = <3>;
>> chan-name = "d4";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan4 {
>> + chan@4 {
>> + reg = <4>;
>> chan-name = "d5";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan5 {
>> + chan@5 {
>> + reg = <5>;
>> chan-name = "d6";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan6 {
>> + chan@6 {
>> + reg = <6>;
>> chan-name = "d7";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan7 {
>> + chan@7 {
>> + reg = <7>;
>> chan-name = "d8";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan8 {
>> + chan@8 {
>> + reg = <8>;
>> chan-name = "d9";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> @@ -133,29 +163,35 @@ example 3) LP5562
>> 4 channels are defined.
>>
>> lp5562@30 {
> s/lp5562/led-controller/
>
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> compatible = "ti,lp5562";
>> reg = <0x30>;
>> clock-mode = /bits/8 <2>;
>>
>> - chan0 {
>> + chan@0 {
>> + reg = <0>;
>> chan-name = "R";
>> led-cur = /bits/ 8 <0x20>;
>> max-cur = /bits/ 8 <0x60>;
>> };
>>
>> - chan1 {
>> + chan@1 {
>> + reg = <1>;
>> chan-name = "G";
>> led-cur = /bits/ 8 <0x20>;
>> max-cur = /bits/ 8 <0x60>;
>> };
>>
>> - chan2 {
>> + chan@2 {
>> + reg = <2>;
>> chan-name = "B";
>> led-cur = /bits/ 8 <0x20>;
>> max-cur = /bits/ 8 <0x60>;
>> };
>>
>> - chan3 {
>> + chan@3 {
>> + reg = <3>;
>> chan-name = "W";
>> led-cur = /bits/ 8 <0x20>;
>> max-cur = /bits/ 8 <0x60>;
>> @@ -167,62 +203,125 @@ example 4) LP8501
>> Others are same as LP5523.
>>
>> lp8501@32 {
> s/lp8501/led-controller/
>
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> compatible = "ti,lp8501";
>> reg = <0x32>;
>> clock-mode = /bits/ 8 <2>;
>> pwr-sel = /bits/ 8 <3>; /* D1~9 connected to VOUT */
>>
>> - chan0 {
>> + chan@0 {
>> + reg = <0>;
>> chan-name = "d1";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan1 {
>> + chan@1 {
>> + reg = <1>;
>> chan-name = "d2";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan2 {
>> + chan@2 {
>> + reg = <2>;
>> chan-name = "d3";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan3 {
>> + chan@3 {
>> + reg = <3>;
>> chan-name = "d4";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan4 {
>> + chan@4 {
>> + reg = <4>;
>> chan-name = "d5";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan5 {
>> + chan@5 {
>> + reg = <5>;
>> chan-name = "d6";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan6 {
>> + chan@6 {
>> + reg = <6>;
>> chan-name = "d7";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan7 {
>> + chan@7 {
>> + reg = <7>;
>> chan-name = "d8";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>>
>> - chan8 {
>> + chan@8 {
>> + reg = <8>;
>> chan-name = "d9";
>> led-cur = /bits/ 8 <0x14>;
>> max-cur = /bits/ 8 <0x20>;
>> };
>> };
>> +
>> +Multicolor Framework Support
>> +In addition to the nodes and properties defined above for device support the
>> +properties below are needed for multicolor framework support as defined in
>> +Documentation/devicetree/bindings/leds/leds-class-multicolor.txt
>> +
>> +Required child properties for multicolor framework
>> + - color : Must be LED_COLOR_ID_MULTI
>> + - function : see Documentation/devicetree/bindings/leds/common.txt
>> +
>> +Required grandchildren properties
>> + - reg : This is the LED output of the device
>> + - color : see Documentation/devicetree/bindings/leds/common.txt
>> +
>> +Multicolor LED example:
>> +lp5523: lp5523@32 {
> Do you really need "lp5523:" node label ?
>
> Besides:
>
> s/lp5523@...led-controller@32/
This change I will make since I added this.
Dan
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