linux-kernel - Re: [PATCHv3 2/6] ARM: dts: meson8b: odroidc1: Set usb power source to always on

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Message-ID: <CAFBinCB8CK8Bn2xKpiAToQQ4K1_W1XZjND9pOGZRZeMp-grs3Q@mail.gmail.com>
Date:   Sat, 28 Aug 2021 17:56:08 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     Anand Moon <linux.amoon@...il.com>
Cc:     linux-phy@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Matt Corallo <oc2udbzfd@...tcorallo.com>,
        Rob Herring <robh+dt@...nel.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Emiliano Ingrassia <ingrassia@...genesys.com>,
        Brian Kim <brian.kim@...dkernel.com>
Subject: Re: [PATCHv3 2/6] ARM: dts: meson8b: odroidc1: Set usb power source
 to always on

Hi Anand,

On Tue, Aug 17, 2021 at 6:17 AM Anand Moon <linux.amoon@...il.com> wrote:
>
> Set P5V0 and vcc_3v3 power source to USB to always on
> so that regulator should not enter in suspend state.
Neither of these two regulators can be controlled by Linux in any way
(there's no GPIO to turn them off, no PWM signal to change the output
voltage, etc.).
So can you please explain what this patch changes from a functional perspective?


Best regards,
Martin