linux-kernel - Re: [PATCH v3 1/3] devicetree: bindings: bd718x7: document HW state related ROHM specific properties

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Message-ID: <20190320130259.GN4731@dell>
Date:   Wed, 20 Mar 2019 13:02:59 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc:     mazzisaccount@...il.com, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, heikki.haikola@...rohmeurope.com,
        mikko.mutanen@...rohmeurope.com, Robin Gong <yibin.gong@....com>,
        Elven Wang <elven.wang@....com>,
        Anson Huang <anson.huang@....com>,
        Angus Ainslie <angus.ainslie@...i.sm>
Subject: Re: [PATCH v3 1/3] devicetree: bindings: bd718x7: document HW state
 related ROHM specific properties

On Thu, 14 Feb 2019, Matti Vaittinen wrote:

> Add ROHM BD71837 / BD71847 specific device tree bindings for
> controlling the PMIC shutdown/reset states and voltages for
> different HW states. The PMIC was designed to be used with NXP
> i.MX8 SoC and it supports SNVS low power state which seems to
> be typical for NXP i.MX SoCs. However, when SNVS is used we must
> not allow SW to control enabling/disabling those regulators which
> are crucial for system to boot as there is a HW limitation which
> causes SW controlled regulators to be kept shut down after SNVS
> reset.
> 
> Allow setting the SNVS to be used as reset target state and allow
> marking those regulators which are critical for boot.
> 
> Signed-off-by: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> ---
>  .../devicetree/bindings/mfd/rohm,bd71837-pmic.txt  | 17 ++++++++++
>  .../bindings/regulator/rohm,bd71837-regulator.txt  | 38 ++++++++++++++++++++++
>  2 files changed, 55 insertions(+)

Needs a DT Ack.

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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