linux-kernel - Re: [PATCH v4 3/3] phy: mediatek: tphy: add debugfs files

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Message-ID: <5c0cc00a37c4cfa03d91e834fb649d52d4ddb041.camel@mediatek.com>
Date:   Sat, 3 Dec 2022 14:53:19 +0000
From:   Chunfeng Yun (云春峰) 
        <Chunfeng.Yun@...iatek.com>
To:     "andrew@...n.ch" <andrew@...n.ch>
CC:     "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "nathan@...nel.org" <nathan@...nel.org>,
        "kishon@...com" <kishon@...com>,
        Eddie Hung (洪正鑫) 
        <Eddie.Hung@...iatek.com>,
        Tianping Fang (方天平) 
        <Tianping.Fang@...iatek.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "vkoul@...nel.org" <vkoul@...nel.org>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>,
        "llvm@...ts.linux.dev" <llvm@...ts.linux.dev>,
        "trix@...hat.com" <trix@...hat.com>,
        "ndesaulniers@...gle.com" <ndesaulniers@...gle.com>
Subject: Re: [PATCH v4 3/3] phy: mediatek: tphy: add debugfs files

On Mon, 2022-11-28 at 15:00 +0100, Andrew Lunn wrote:
> On Mon, Nov 28, 2022 at 07:26:02AM +0000, Chunfeng Yun (云春峰) wrote:
> > On Thu, 2022-11-24 at 23:17 +0530, Vinod Koul wrote:
> > > On 10-11-22, 21:27, Chunfeng Yun wrote:
> > > > These debugfs files are mainly used to make eye diagram test
> > > > easier,
> > > > especially helpful to do HQA test for a new IC without efuse
> > > > enabled.
> 
> Exporting data for eye diagrams seems like something many PHYs could
> use. Please consider adding an official uniform API which any PHY
> could use, so we don't end up with lots of incompatible formats in
> debugfs.
Good idea, but it seems difficult to do it due to the settings of phy
controllers are not common.

> 
> 	Andrew