linux-kernel - Re: [PATCH RESEND v3 0/3] Add support for ESM

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Date:   Tue, 25 Apr 2023 14:19:43 +0530
From:   Neha Malcom Francis <n-francis@...com>
To:     Guenter Roeck <linux@...ck-us.net>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <jdelvare@...e.com>,
        <linux-hwmon@...r.kernel.org>
CC:     <nm@...com>, <vigneshr@...com>, <u-kumar1@...com>,
        <kristo@...nel.org>
Subject: Re: [PATCH RESEND v3 0/3] Add support for ESM

Hi Guenter

On 24/04/23 20:27, Guenter Roeck wrote:
> On 4/24/23 03:50, Neha Malcom Francis wrote:
>> Resending as no major changes, commit subject change only.
>>
> 
> Maybe you consider changing the subject of the bindings from "misc"
> to "hwmon" as not being a major change, but it made me aware that you
> are trying to sneak bindings which in my opinion don't belong there
> into the hwmon bindings directory. This is not a hardware monitoring
> device, it doesn't have anything to do with hardware monitoring, and the
> bindings do not belong into bindings/hwmon/.
> 

I understand, it's a thin line across which I pushed ESM into hwmon; my 
reasoning was ESM also actively looks for signals that it aggregates, 
and is overall monitoring the device health. But if there was an option, 
in order of fitting: fault/ > misc/ > hwmon/

Using misc/ was questioned in an earlier review; and fault/ is not yet 
created and I did not think there were enough instances to back me up on 
creating a new dt-bindings dir

To come to a common solution, let us keep this binding in misc/ along 
with other fault detection mechanisms existing and take it up as a 
follow up action to create a fault/ ?

> Maybe you can convince the devicetree maintainers to accept the bindings
> into the suggested location, but that will be over my objection.
> 
> Guenter
> 
> 
>> ESM (Error Signaling Module) is a fundamental IP responsible for
>> handling safety events. The driver currently present in U-Boot is
>> responsible for configuring ESM. This patch series adds dt-binding and
>> nodes for J721E and J7200. This goes towards end goal of having DTB sync
>> with that of U-Boot as well as ensuring completeness of hardware
>> description in devicetree.
>>
>> Neha Malcom Francis (3):
>>    dt-bindings: hwmon: esm: Add ESM support for TI K3 devices
>>    arm64: dts: ti: k3-j721e: Add ESM support
>>    arm64: dts: ti: k3-j7200: Add ESM support
>>
>>   .../bindings/hwmon/ti,j721e-esm.yaml          | 53 +++++++++++++++++++
>>   arch/arm64/boot/dts/ti/k3-j7200-main.dtsi     |  6 +++
>>   arch/arm64/boot/dts/ti/k3-j7200.dtsi          |  1 +
>>   arch/arm64/boot/dts/ti/k3-j721e.dtsi          |  1 +
>>   4 files changed, 61 insertions(+)
>>   create mode 100644 
>> Documentation/devicetree/bindings/hwmon/ti,j721e-esm.yaml
>>
> 

-- 
Thanking You
Neha Malcom Francis