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From: Tim Harvey <tharvey@gateworks.com>
To: linux-spi@vger.kernel.org, David Daney <david.daney@cavium.com>,
	Jan Glauber <jglauber@marvell.com>
Subject: spi-thunderx (OcteonTX) max SPI frequency
Date: Wed, 22 Sep 2021 09:14:23 -0700	[thread overview]
Message-ID: <CAJ+vNU2aTKyQ=UwJMLKf9D7CTk4F59o3uHCC80jJBOge-Ff9Aw@mail.gmail.com> (raw)

Greetings,

Does anyone know why the MAX spi frequency for the spi-thunderx driver
would be 16MHz? The CN81XX HM states the SPI clock frequency can go up
to 50MHz.

The driver was originally for Octeon (I'm thinking this was CN7xxx
SoC's?) which perhaps were limited to 16MHz yet I downloaded a CN70XX
ref manual and it shows 25MHz.

I don't know my history regarding the Cavium (now Marvell) SoC's well
enough to know exactly what Octeon means or meant vs ThunderX. Hoping
someone from Marvell can answer this.

Best regards,

Tim

             reply	other threads:[~2021-09-22 16:14 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-22 16:14 Tim Harvey [this message]
2021-09-30  0:51 ` spi-thunderx (OcteonTX) max SPI frequency Tim Harvey

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