linux-kernel - Re: [PATCH 2/4] ARM: dts: dm8168-evm: add the external reference clock for SATA

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Message-ID: <CAMpxmJW5f5foYbFv_FsQPibDamT4hCJSywnELdLmXpQg_oKohQ@mail.gmail.com>
Date:   Tue, 14 Mar 2017 16:01:47 +0100
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Michael Turquette <mturquette@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Patrick Titiano <ptitiano@...libre.com>,
        Paul Walmsley <paul@...an.com>, linux-ide@...r.kernel.org,
        linux-devicetree <devicetree@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org
Subject: Re: [PATCH 2/4] ARM: dts: dm8168-evm: add the external reference
 clock for SATA

2017-03-13 22:34 GMT+01:00 Tony Lindgren <tony@...mide.com>:
> * Bartosz Golaszewski <bgolaszewski@...libre.com> [170313 09:45]:
>> This board has an external oscillator supplying the reference clock
>> signal for SATA. Its rate is fixed at 100Mhz. Add a corresponding
>> device tree node.
>
> Is this the 100MHz clock from PCIe? Just like on dm814x-evm as noted
> in the workaround thread below:
>
> http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/p/181083/671141
>
> Regards,
>
> Tony
>

Hi Tony,

these signals come from a TI CDCM61002 (U30 on the board's
schematics). It's hardwired to 100mHZ output.

Thanks,
Bartosz Golaszewski