linux-kernel - Re: [PATCH v2 4/6] arm64: dts: rockchip: add Gru/Kevin DTS

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Message-ID: <CAD=FV=VS6YBjUQsix=nHteKG6jt=+LGWpDSqrP4VRu5LxOVc3A@mail.gmail.com>
Date:   Tue, 28 Feb 2017 14:54:33 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     Brian Norris <briannorris@...omium.org>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Caesar Wang <wxt@...k-chips.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Stephen Barber <smbarber@...omium.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Chris Zhong <zyw@...k-chips.com>
Subject: Re: [PATCH v2 4/6] arm64: dts: rockchip: add Gru/Kevin DTS

Hi,

On Tue, Feb 28, 2017 at 2:00 PM, Heiko Stuebner <heiko@...ech.de> wrote:
>> +     pp3300_wifi_bt: pp3300-wifi-bt {
>> +             compatible = "regulator-fixed";
>> +             regulator-name = "pp3300_wifi_bt";
>> +             /* NOTE: wlan_module_pd_l pinctrl in pp1800_pcie */
>> +
>> +             enable-active-high;
>> +
>> +             /* NOTE: this GPIO also used in pp1800_pcie */
>
> does the gpio subsystem like this double usage?

Yes, see commit f19b00da8ed3 ("regulator: core: support shared enable
GPIO concept").  ...but there's no great place to put the pinctrl node
though, unfortunately.  It's either randomly pick one of the two or
add it as a system-level hog.

-Doug