linux-kernel - Re: [PATCH 2/7] regulator: axp20x: Add support for AXP813 regulators

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Message-ID: <20170929083337.fv7ed5utnofqgsi4@flea>
Date:   Fri, 29 Sep 2017 10:33:37 +0200
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Lee Jones <lee.jones@...aro.org>, Mark Brown <broonie@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com,
        Quentin Schulz <quentin.schulz@...e-electrons.com>
Subject: Re: [PATCH 2/7] regulator: axp20x: Add support for AXP813 regulators

On Fri, Sep 29, 2017 at 03:25:09AM +0000, Chen-Yu Tsai wrote:
> The AXP813 PMIC has 7 DC-DC buck regulators, 16 LDOs (including the
> fixed RTC LDO and 2 GPIO LDOs), and 1 switchable. The drive-vbus
> feature is also supported. All the hardware details are very similar
> to the AXP803, with the following exceptions:
> 
>   - Extra DCDC7 buck regulator, with the same range as DCDC6
> 
>   - SWitch now has a separate supply pin, instead of being chained
>     internaly from DCDC1
> 
>   - RTC LDO output voltage is now 1.8V
> 
>   - FLDO3 is an LDO with switchable supplies, but unconfigurable output
>     voltage. The voltage is always half that of its supply.
> 
> Support for FLDO3 is currently unimplemented, as it requires runtime
> switching of its supplies, something the regulator subsystem does not
> support. It is not used in either the reference designs nor actually
> produced boards available.
> 
> Signed-off-by: Chen-Yu Tsai <wens@...e.org>
> Tested-by: Maxime Ripard <maxime.ripard@...e-electrons.com>

Acked-by: Maxime Ripard <maxime.ripard@...e-electrons.com>

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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