linux-kernel - i.MX6: Increasing VPU frequency

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Message-ID: <CAH-u=82M1yCmPjBg5qeiC8JiHjM8+WsP+utX_VPKfJwJsu0QFg@mail.gmail.com>
Date:	Wed, 4 Nov 2015 17:52:33 +0100
From:	Jean-Michel Hautbois <jean-michel.hautbois@...-labs.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	sboyd@...eaurora.org, mturquette@...libre.com,
	Sascha Hauer <kernel@...gutronix.de>, shawnguo@...nel.org
Cc:	Fabio Estevam <fabio.estevam@...escale.com>
Subject: i.MX6: Increasing VPU frequency

Hi !

I can see in FSL kernel that VPU is configurable to 352M (it defaults
at 264MHz in mainline I think).
In the TRM, it is even specified at 352MHz as a default frequency,
with a maximum of 540MHz.

Would it be possible to allow this clock rating modification if, for
instance, we select a performance governor in cpufreq, or if a coda
encoder is started with 1080p for instance ?
If so, then how is it doable properly ?

Another question is the IPU frequency, but I think it can run only @264MHz...

Thanks,
JM
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