linux-kernel - Re: [PATCH RFC v2 1/5] dt-bindings: thermal: Add MBG thermal monitor support

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Message-ID: <2911fa29-1ecb-4d2d-a89b-2068f6fe3022@oss.qualcomm.com>
Date: Fri, 13 Dec 2024 16:50:38 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Satya Priya Kakitapalli <quic_skakitap@...cinc.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Zhang Rui <rui.zhang@...el.com>, Lukasz Luba <lukasz.luba@....com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>, Lee Jones <lee@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>, Amit Kucheria <amitk@...nel.org>,
        Thara Gopinath <thara.gopinath@...il.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: Ajit Pandey <quic_ajipan@...cinc.com>,
        Imran Shaik <quic_imrashai@...cinc.com>,
        Taniya Das <quic_tdas@...cinc.com>,
        Jagadeesh Kona <quic_jkona@...cinc.com>, quic_kamalw@...cinc.com,
        quic_jprakash@...cinc.com, linux-arm-msm@...r.kernel.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org
Subject: Re: [PATCH RFC v2 1/5] dt-bindings: thermal: Add MBG thermal monitor
 support

On 12.12.2024 5:11 PM, Satya Priya Kakitapalli wrote:
> Add PM8775 ADC5 GEN3 Channel info and bindings for the MBG Temp
> alarm peripheral found on PM8775 pmic.
> 
> Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@...cinc.com>
> ---
>  .../bindings/thermal/qcom-spmi-mbg-tm.yaml         | 86 ++++++++++++++++++++++
>  .../iio/adc/qcom,spmi-adc5-gen3-pm8775.h           | 41 +++++++++++
>  2 files changed, 127 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/qcom-spmi-mbg-tm.yaml b/Documentation/devicetree/bindings/thermal/qcom-spmi-mbg-tm.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..909373eb758e4a8b7c2bbd0022c56ab2e823ca13
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/qcom-spmi-mbg-tm.yaml
> @@ -0,0 +1,86 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/thermal/qcom-spmi-mbg-tm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Technologies, Inc. SPMI PMIC MBG Thermal Monitoring
> +
> +maintainers:
> +  - Satya Priya Kakitapalli <quic_skakitap@...cinc.com>
> +
> +description:
> +  Qualcomm's MBG(Master Bandgap) temperature alarm monitors the die
> +  temperature and generates an interrupt if the PMIC die temperature is
> +  over a set of programmable temperature thresholds. It allows monitoring
> +  for both hot and cold, LVL1 and LVL2 thresholds, which makes it different
> +  from the existing temp alarm peripheral. The interrupt comes over SPMI
> +  and the MBG's fault status register gives details to understand whether
> +  it is a hot/cold and LVL1/LVL2 violation.
> +
> +allOf:
> +  - $ref: thermal-sensor.yaml#
> +
> +properties:
> +  compatible:
> +    const: qcom,spmi-pm8775-mbg-tm

The bus the chip is connected over shouldn't be part of the compatible

Konrad