Re: [PATCH v4 2/2] regulator: add device tree support for max8997

[Grant Likely]

On Sat, 24 Mar 2012 15:19:50 +0530, Thomas Abraham <thomas.abraham@xxxxxxxxxx> wrote:
> Add device tree based discovery support for max8997.
> 
> Cc: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx>
> Cc: Rajendra Nayak <rnayak@xxxxxx>
> Cc: Rob Herring <rob.herring@xxxxxxxxxxx>
> Cc: Grant Likely <grant.likely@xxxxxxxxxxxx>
> Signed-off-by: Thomas Abraham <thomas.abraham@xxxxxxxxxx>
> ---
>  .../devicetree/bindings/regulator/max8997-pmic.txt |  133 ++++++++++++++++++
>  drivers/mfd/max8997.c                              |   73 ++++++++++-
>  drivers/regulator/max8997.c                        |  143 +++++++++++++++++++-
>  include/linux/mfd/max8997-private.h                |    1 +
>  include/linux/mfd/max8997.h                        |    1 +
>  5 files changed, 347 insertions(+), 4 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/regulator/max8997-pmic.txt
> 
> diff --git a/Documentation/devicetree/bindings/regulator/max8997-pmic.txt b/Documentation/devicetree/bindings/regulator/max8997-pmic.txt
> new file mode 100644
> index 0000000..90a730b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/max8997-pmic.txt
> @@ -0,0 +1,133 @@
> +* Maxim MAX8997 Voltage and Current Regulator
> +
> +The Maxim MAX8997 is a multi-function device which includes volatage and
> +current regulators, rtc, charger controller and other sub-blocks. It is
> +interfaced to the host controller using a i2c interface. Each sub-block is
> +addressed by the host system using different i2c slave address. This document
> +describes the bindings for 'pmic' sub-block of max8997.
> +
> +Required properties:
> +- compatible: Should be "maxim,max8997-pmic".
> +- reg: Specifies the i2c slave address of the pmic block. It should be 0x66.
> +
> +- max8997,pmic-buck1-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
> +  units for buck1 when changing voltage using gpio dvs. Refer to [1] below
> +  for additional information.
> +
> +- max8997,pmic-buck2-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
> +  units for buck2 when changing voltage using gpio dvs. Refer to [1] below
> +  for additional information.
> +
> +- max8997,pmic-buck5-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
> +  units for buck5 when changing voltage using gpio dvs. Refer to [1] below
> +  for additional information.

These are *really long* property names.  Anything over 32 characters
seems excessive to me.

Other than that the binding looks good.

g.

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