linux-kernel - Re: [PATCH 0/2] make generic-adc-thermal less noisy

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Message-ID: <15378eed-d8d1-a37f-7f4c-88c112ecde0b@linaro.org>
Date:   Thu, 9 Jan 2020 23:43:20 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        rui.zhang@...el.com, amit.kucheria@...durent.com,
        linux-pm@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        jeff.dagenais@...il.com, edubezval@...il.com
Subject: Re: [PATCH 0/2] make generic-adc-thermal less noisy

On 08/01/2020 00:20, Martin Blumenstingl wrote:
> I want to use generic-adc-thermal on the 32-bit Amlogic SoCs in the
> future. These have a thermal sensors which can be read through the
> SAR ADC (for which we have an IIO driver) on those SoCs.
> 
> While testing I found the generic-adc-thermal driver to be a bit
> noisy when operating in well supported environment:
> - the SoC temperature sensor on the 32-bit Amlogic SoCs is typically
>   loaded late because of it's dependencies (it needs data from the
>   eFuse and a syscon to calibrate). Yet I still got a message stating
>   there's no lookup table for the generic-adc-thermal defined (which
>   is expected and perfectly valid on these Amlogic SoCs, as the IIO
>   channel returns the temperature).
> - the IIO channel is correctly defined with type IIO_TEMP, yet the
>   generic-adc-thermal driver still prints a message which first lead
>   me to believe that I passed an incorrect IIO channel (one that
>   returns a voltage).
> 
> 
> Martin Blumenstingl (2):
>   thermal: generic-adc: silence "no lookup table" on deferred probe
>   thermal: generic-adc: silence info message for IIO_TEMP channels
> 
>  drivers/thermal/thermal-generic-adc.c | 20 ++++++++++++--------
>  1 file changed, 12 insertions(+), 8 deletions(-)

Applied, thanks

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