linux-kernel - Re: [PATCH 1/2] dt-bindings: iio: adc: meson-saradc: update temperature sensor support

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Date:   Thu, 3 Jan 2019 17:02:09 -0600
From:   Rob Herring <robh@...nel.org>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-iio@...r.kernel.org, jic23@...nel.org, lars@...afoo.de,
        pmeerw@...erw.net, robh+dt@...nel.org, mark.rutland@....com,
        balbes-150@...dex.ru, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: Re: [PATCH 1/2] dt-bindings: iio: adc: meson-saradc: update
 temperature sensor support

On Thu, 27 Dec 2018 22:50:19 +0100, Martin Blumenstingl wrote:
> Meson8b and Meson8m2 use a 5-bit wide TSC (temperature sensor
> coefficient). The SAR ADC registers however can only store (the lower)
> 4 bits. The fifth (upper-most) bit is stored inside the
> MESON_HHI_DPLL_TOP_0[9] register from the HHI register area.
> This adds a syscon property to the HHI register area so a driver can
> fetch the HHI register map and store the fifth TSC bit in there.
> 
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
> ---
>  .../devicetree/bindings/iio/adc/amlogic,meson-saradc.txt      | 4 ++++
>  1 file changed, 4 insertions(+)
> 

Reviewed-by: Rob Herring <robh@...nel.org>