linux-kernel - Re: [EXT] Re: Issue: regmap: use debugfs even when no device

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Message-ID: <20190529111554.GO2456@sirena.org.uk>
Date:   Wed, 29 May 2019 12:15:54 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Andy Duan <fugang.duan@....com>
Cc:     "david@...hnology.com" <david@...hnology.com>,
        "rafael@...nel.org" <rafael@...nel.org>,
        Robby Cai <robby.cai@....com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [EXT] Re: Issue: regmap: use debugfs even when no device

On Wed, May 29, 2019 at 01:33:46AM +0000, Andy Duan wrote:

> Correct, regmap without device also has issue when power if off, because regmap
> doesn't implement runtime pm for the device, but maybe device driver implement
> the runtime pm for the device. 

> So regmap how to manage the clock and power when access registers by debugfs ?

Like I say the basic recommendation is to use a cache.

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