linux-kernel - Re: [PATCH] drm/panfrost: Enable devfreq to work without regulator

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Message-ID: <CAL_Jsq+F-QLJp_1hJz5_0GNLjYwDzkAs8Zg9RsaGiS90QGr_dQ@mail.gmail.com>
Date:   Mon, 19 Aug 2019 11:57:10 -0500
From:   Rob Herring <robh@...nel.org>
To:     Steven Price <steven.price@....com>
Cc:     Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/panfrost: Enable devfreq to work without regulator

On Fri, Aug 16, 2019 at 4:31 AM Steven Price <steven.price@....com> wrote:
>
> If there is no regulator defined for the GPU then still control the
> frequency using the supplied clock.
>
> Some boards have clock control but no (direct) control of the regulator.
> For example the HiKey960 uses a mailbox protocol to a MCU to control
> frequencies and doesn't directly control the voltage. This patch allows
> frequency control of the GPU on this system.
>
> Signed-off-by: Steven Price <steven.price@....com>
> ---
>  drivers/gpu/drm/panfrost/panfrost_devfreq.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)

Applied, thanks.

Rob