From: Ingo van Lil <inguin@gmx.de>
To: Ludovic Desroches <ludovic.desroches@microchip.com>,
linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: boris.brezillon@free-electrons.com, mturquette@baylibre.com,
sboyd@codeaurora.org, nicolas.ferre@microchip.com,
alexandre.belloni@free-electrons.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] clk: at91: utmi: set the mainck rate
Date: Wed, 6 Sep 2017 12:25:01 +0200 [thread overview]
Message-ID: <54f5a2d5-0dd3-e272-12e5-edc91fb2111e@gmx.de> (raw)
In-Reply-To: <20170906095159.13295-1-ludovic.desroches@microchip.com>
On 09/06/2017 11:51 AM, Ludovic Desroches wrote:
> By default, it is assumed that the UTMI clock is generated from a 12 MHz
> reference clock (MAINCK). If it's not the case, the FREQ field of the
> SFR_UTMICKTRIM has to be updated to generate the UTMI clock in the
> proper way.
>
> The UTMI clock has a fixed rate of 480 MHz. In fact, there is no
> multiplier we can configure. The multiplier is managed internally,
> depending on the reference clock frequency, to achieve the target of
> 480 MHz.
>
> Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Works fine with all my boards. Thanks!
Acked-by: Ingo van Lil <inguin@gmx.de>
Regards,
Ingo
next prev parent reply other threads:[~2017-09-06 10:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-06 9:51 Ludovic Desroches
2017-09-06 10:25 ` Ingo van Lil [this message]
2017-11-02 6:40 ` Stephen Boyd
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