linux-kernel - Re: [PATCH 1/8] spi: spi-mem: Use picoseconds for calculating the op durations

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Message-ID: <a44f8212-1d72-46a1-983b-9f46ed66da03@sirena.org.uk>
Date: Wed, 18 Jun 2025 13:24:27 +0100
From: Mark Brown <broonie@...nel.org>
To: Miquel Raynal <miquel.raynal@...tlin.com>
Cc: Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>, Yogesh S <yogeshs@...com>,
	Santhosh Kumar K <s-k6@...com>, Steam Lin <STLin2@...bond.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mtd@...ts.infradead.org
Subject: Re: [PATCH 1/8] spi: spi-mem: Use picoseconds for calculating the op
 durations

On Wed, Jun 18, 2025 at 02:14:18PM +0200, Miquel Raynal wrote:
> spi_mem_calc_op_duration() is deriving the duration of a specific op, by
> multiplying the number of cycles with the time a cycle will last. This
> time was measured in nanoseconds, which means at high frequencies the
> delta between two frequencies might not be properly catch due to
> roundings.

Reviewed-by: Mark Brown <broonie@...nel.org>

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