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

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Date:   Wed, 4 Oct 2017 11:50:18 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Mark Brown <broonie@...nel.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        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, 29 Sep 2017, 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>
> ---
>  drivers/regulator/axp20x-regulator.c | 102 +++++++++++++++++++++++++++++++++--

>  include/linux/mfd/axp20x.h           |   3 ++

Acked-by: Lee Jones <lee.jones@...aro.org>

>  2 files changed, 101 insertions(+), 4 deletions(-)

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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