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Date:   Fri, 31 Aug 2018 10:32:31 +0200
From:   Maxime Ripard <>
To:     Philipp Rossak <>
Subject: Re: [PATCH v3 04/30] iio: adc: Kconfig: Update Kconfig to new build

On Thu, Aug 30, 2018 at 05:44:52PM +0200, Philipp Rossak wrote:
> Since we are merging the mfd driver into the iio adc driver we need to
> update the Kconfig build options.

Most of your commit logs a pretty short, and this is an issue for
people lacking context. This would be the reviewers, but also users
bisecting to see where there's a bug, or you in a couple of years from
now :)

Every commit log should be as complete as possible. In this case, you
are saying what you are doing, but this is actually redundant with the
patch, I can already tell what you are doing by reading the rest of
the mail. However, what is really important is *why* you are doing it.

> Signed-off-by: Philipp Rossak <>
> ---
>  drivers/iio/adc/Kconfig | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
> diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
> index 9da79070357c..5d0cffd6d2e4 100644
> --- a/drivers/iio/adc/Kconfig
> +++ b/drivers/iio/adc/Kconfig
> @@ -713,13 +713,16 @@ config STX104
>  	  array module parameter.
>  config SUN4I_GPADC
> -	tristate "Support for the Allwinner SoCs GPADC"
> +	tristate "Allwinner sunxi platforms' GPADC/Thermal driver"

I'm really not sure this is worth updating

> +	select REGMAP_MMIO
> +	select REGMAP_IRQ
>  	depends on IIO
> -	depends on MFD_SUN4I_GPADC || MACH_SUN8I
> -	depends on THERMAL || !THERMAL_OF
> +	depends on ARCH_SUNXI || MACH_SUN8I
> +	depends on THERMAL && THERMAL_OF

For example, why you are changing the thermal dependency is not really
obvious to anyone.

>  	help
>  	  Say yes here to build support for Allwinner (A10, A13 and A31) SoCs
> -	  GPADC. This ADC provides 4 channels which can be used as an ADC or as
> +	  GPADC or newer SOCs (A33, H3, A83T, ...) Thermal sensor driver.
> +	  This ADC provides 4 channels which can be used as an ADC or as

I'm not sure this is worth updating either, especially when there's
information that has been dropped.


Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering

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