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Date: Tue, 30 Apr 2024 11:09:31 +0900
From: Mark Brown <broonie@kernel.org>
To: Jisheng Zhang <jszhang@kernel.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] regulator: tps6286x-regulator: Enable REGCACHE_FLAT
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References: <20240430010019.1980-1-jszhang@kernel.org>
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On Tue, Apr 30, 2024 at 09:00:19AM +0800, Jisheng Zhang wrote:

> Enable regmap cache to reduce i2c transactions and corresponding
> interrupts if regulator is accessed frequently. Since the register map
> is small, we use a FLAT regmap cache.

There are a number of disadvantages to the flat cache, especially the
lack of sparseness, so it is generally better to use the maple cache
unless there's a specific need for the flat cache (usually the fact that
it doesn't allocate).

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