linux-kernel - Re: [PATCH RFC v2 0/5] Support for MELFAS MIP4 touchkey devices

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Message-ID: <e6b71b3d3cacc2f112e62c57fd0c3c65@disroot.org>
Date: Fri, 13 Jun 2025 08:44:43 +0000
From: Kaustabh Chakraborty <kauschluss@...root.org>
To: Sangwon Jee <jeesw@...fas.com>, Dmitry Torokhov
 <dmitry.torokhov@...il.com>, Rob Herring <robh@...nel.org>, Krzysztof
 Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Henrik
 Rydberg <rydberg@...math.org>
Cc: linux-input@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC v2 0/5] Support for MELFAS MIP4 touchkey devices

On 2025-06-12 19:41, Kaustabh Chakraborty wrote:
> MIP4 is a protocol developed and used by MELFAS in its touchscreen and
> touchkey devices. The MIP4 touchscreen driver acknowledges the
> touchscreen capabilities, but touchkeys are left unimplemented.
> 
> Apart from touchscreen + touchkey devices, the protocol is also used by
> devices which are, functionally, touchkey devices. Thus, the driver
> should also be compatible with those devices. This series aims to
> introduce such required changes.
> 
> RFC: How should the compatible string be handled? The string defined in
> dtschema is 'melfas,mip4_ts', which implies that it's a MIP4 *touchscreen*
> by MELFAS.

I see that there are 2 dts(i) files which use the compatible
"melfas,mip4_ts", as discovered from a simple grep in arch/. They are:
- arm64/qcom/msm8916-lg-m216.dts
- arm64/mediatek/mt8173-elm-hana.dtsi

Is it possible to change all references of the compatible to something more
generic, such as "melfas,mip4"?