2014-10-06 23:22 GMT+02:00 Lee Jones <lee.jones@xxxxxxxxxx>:
> On Thu, 25 Sep 2014, Johannes Pointner wrote:
>
>> Add documentation for compatible property of subnodes.
>>
>> Signed-off-by: Johannes Pointner <johannes.pointner@xxxxxxxxxxxxxxxxx>
>> ---
>> Documentation/devicetree/bindings/regulator/tps65217.txt | 7 ++++++-
>> .../devicetree/bindings/video/backlight/tps65217-backlight.txt | 9 ++++++---
>> 2 files changed, 12 insertions(+), 4 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/regulator/tps65217.txt b/Documentation/devicetree/bindings/regulator/tps65217.txt
>> index 4f05d20..8ae3a3b 100644
>> --- a/Documentation/devicetree/bindings/regulator/tps65217.txt
>> +++ b/Documentation/devicetree/bindings/regulator/tps65217.txt
>> @@ -14,6 +14,9 @@ Required properties:
>> Optional properties:
>> - ti,pmic-shutdown-controller: Telling the PMIC to shutdown on PWR_EN toggle.
>>
>> +Required subnode properties:
>> +- compatible: "ti,tps65217-pmic"
>> +
>> The valid names for regulators are:
>> tps65217: dcdc1, dcdc2, dcdc3, ldo1, ldo2, ldo3 and ldo4
>>
>> @@ -23,9 +26,11 @@ Example:
>>
>> tps: tps@24 {
>> compatible = "ti,tps65217";
>> + reg = <0x24>;
>> ti,pmic-shutdown-controller;
>>
>> - regulators {
>> + tps_pmic: regulators {
>
> How is the tps_pmic label used?
>
>> + compatible = "ti,tps65217-pmic";
>
> I'd like to see a '\n' here.
I will add a newline here.
>
>> dcdc1_reg: dcdc1 {
>> regulator-min-microvolt = <900000>;
>> regulator-max-microvolt = <1800000>;
>> diff --git a/Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt b/Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt
>> index 5fb9279..f92f154 100644
>> --- a/Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt
>> +++ b/Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt
>> @@ -6,19 +6,22 @@ used to drive LEDs for use as backlights.
>> Required properties:
>> - compatible: "ti,tps65217"
>> - reg: I2C slave address
>> -- backlight: node for specifying WLED1 and WLED2 lines in TPS65217
>> +- backlight: subnode for specifying WLED1 and WLED2 lines in TPS65217
>> +
>> +Required subnode properties:
>> +- compatible: "ti,tps65217-bl"
>> - isel: selection bit, valid values: 1 for ISEL1 (low-level) and 2 for ISEL2 (high-level)
>> - fdim: PWM dimming frequency, valid values: 100, 200, 500, 1000
>> - default-brightness: valid values: 0-100
>>
>> -Each regulator is defined using the standard binding for regulators.
>>
>> Example:
>>
>> tps: tps@24 {
>> reg = <0x24>;
>> compatible = "ti,tps65217";
>
> I'd like to see a '\n' here.
I will add a newline here.
>
>> - backlight {
>> + tps_bl: backlight {
>
> Same here. Is this label used?
>
>> + compatible = "ti,tps65217-bl";
>> isel = <1>; /* 1 - ISET1, 2 ISET2 */
>> fdim = <100>; /* TPS65217_BL_FDIM_100HZ */
>> default-brightness = <50>;
>
> --
> Lee Jones
> Linaro STMicroelectronics Landing Team Lead
> Linaro.org │ Open source software for ARM SoCs
> Follow Linaro: Facebook | Twitter | Blog
Regarding the labels: The backlight label could be used like the
following. I use it like this in my tests with the tilcdc panel driver
which has a backlight support.
panel {
backlight = <&tps_bl>;
panel-info {
ac-bias = <255>;
ac-bias-intrpt = <0>;
dma-burst-sz = <16>;
bpp = <32>;
fdd = <0x80>;
sync-edge = <0>;
sync-ctrl = <1>;
.
.
.
I'm not sure if there could be actual use for the pmic label, but I
thought if I add a label to backlight, I have to add one to the pmic
too to keep it similar.
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