linux-kernel - Re: [PATCH 11/11] dt-bindings: iio: remove QCOM ADC files from iio folder

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Message-ID: <8b2dd686-382a-f490-7b6e-9603d939bad7@linaro.org>
Date:   Sun, 9 Jul 2023 19:28:49 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jishnu Prakash <quic_jprakash@...cinc.com>, agross@...nel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linus.walleij@...aro.org, Jonathan.Cameron@...wei.com,
        sboyd@...nel.org, dmitry.baryshkov@...aro.org,
        quic_subbaram@...cinc.com, quic_collinsd@...cinc.com,
        quic_kamalw@...cinc.com, quic_jestar@...cinc.com,
        marijn.suijten@...ainline.org, andriy.shevchenko@...ux.intel.com,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-iio@...r.kernel.org
Cc:     linux-arm-msm-owner@...r.kernel.org
Subject: Re: [PATCH 11/11] dt-bindings: iio: remove QCOM ADC files from iio
 folder

On 08/07/2023 09:28, Jishnu Prakash wrote:
> Now that the ADC dt-binding paths have been updated everywhere
> to use the files copied to the 'iio/adc' folder, remove them
> from the 'iio' folder.
> 
> Signed-off-by: Jishnu Prakash <quic_jprakash@...cinc.com>
> ---

Nothing this was explained in previous patches... We should not have to
read patchset from the end to understand what is happening here. Anyway,
your commits lack rationale why this is done. Without it, this is pure
churn which breaks users. ABI breaks need to be explained in the commit
msg and come with some reason.

...

> -/* 400k pull-up3 */
> -#define ADC5_GEN3_AMUX1_THM_400K_PU		0x64
> -#define ADC5_GEN3_AMUX2_THM_400K_PU		0x65
> -#define ADC5_GEN3_AMUX3_THM_400K_PU		0x66
> -#define ADC5_GEN3_AMUX4_THM_400K_PU		0x67
> -#define ADC5_GEN3_AMUX5_THM_400K_PU		0x68
> -#define ADC5_GEN3_AMUX6_THM_400K_PU		0x69
> -#define ADC5_GEN3_AMUX1_GPIO_400K_PU		0x6a
> -#define ADC5_GEN3_AMUX2_GPIO_400K_PU		0x6b
> -#define ADC5_GEN3_AMUX3_GPIO_400K_PU		0x6c
> -#define ADC5_GEN3_AMUX4_GPIO_400K_PU		0x6d
> -
> -/* 1/3 Divider */
> -#define ADC5_GEN3_AMUX1_GPIO_DIV3		0x8a
> -#define ADC5_GEN3_AMUX2_GPIO_DIV3		0x8b
> -#define ADC5_GEN3_AMUX3_GPIO_DIV3		0x8c

You just added these defines in previous patches. Don't add them to
incorrect places just to fix it second later.

Best regards,
Krzysztof