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Date:	Mon, 6 Oct 2014 22:22:32 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Johannes Pointner <johannes.pointner@...il.com>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] dt: bindings: tps65217: add compatible property
 for  subnodes

On Thu, 25 Sep 2014, Johannes Pointner wrote:

> Add documentation for compatible property of subnodes.
> 
> Signed-off-by: Johannes Pointner <johannes.pointner@...automation.com>
> ---
>  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.

>  			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.

> -		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
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