linux-kernel - Re: [linux-sunxi] [PATCH] ARM: dts: sun8i-h3: Increase the GPU clock to 576 MHz

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Message-ID: <2117931.94GTsegy69@jernej-laptop>
Date:   Wed, 27 Jun 2018 18:47:56 +0200
From:   Jernej Škrabec <jernej.skrabec@...il.com>
To:     linux-sunxi@...glegroups.com, paul.kocialkowski@...tlin.com
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Qiang Yu <yuq825@...il.com>,
        Giulio Benetti <giulio.benetti@...ronovasrl.com>,
        Jagan Teki <jagan@...rulasolutions.com>
Subject: Re: [linux-sunxi] [PATCH] ARM: dts: sun8i-h3: Increase the GPU clock to 576 MHz

Hi!

Dne sreda, 27. junij 2018 ob 09:26:35 CEST je Paul Kocialkowski napisal(a):
> It was reported (based on declarations from the Allwiner BSP) that the
> Mali 400 found on the H3 can be clocked up to 576 MHz.
> 
> The frequency was tested using the r6p2 out-of-tree driver and a Kodi
> userspace with associated r6p2 blobs, leading to a working result.
> 
> This increases the clock to 576 MHz, which directly increases the pixel
> throughput of the GPU (given the 1 pixel-per-cycle rate).

I think that current clock speed is on a bit conservative side because there 
is no thermal throttling support yet.

Best regards,
Jernej