linux-kernel - Re: [PATCH v3 3/3] regulator: mt6358: Add output voltage fine tuning to variable LDOs

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Message-ID: <71906f4e-8875-7431-aee5-57eae1f55d65@collabora.com>
Date:   Thu, 21 Sep 2023 11:13:01 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Chen-Yu Tsai <wenst@...omium.org>, Lee Jones <lee@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     Zhiyong Tao <zhiyong.tao@...iatek.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v3 3/3] regulator: mt6358: Add output voltage fine tuning
 to variable LDOs

Il 13/09/23 10:29, Chen-Yu Tsai ha scritto:
> Some of the LDO regulators in the MT6358/MT6366 have sparsely populated
> voltage tables, supported by custom get/set operators. While it works,
> it requires more code and an extra field to store the lookup table.
> These LDOs also have fine voltage calibration settings that can slightly
> boost the output voltage from 0 mV to 100 mV, in 10 mV increments.
> 
> These combined could be modeled as a pickable set of linear ranges. The
> coarse voltage setting is modeled as the range selector, while each
> range has 11 selectors, starting from the range's base voltage, up to
> +100 mV, in 10mV increments.
> 
> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>