From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C0D422E3AE5; Wed, 18 Jun 2025 12:30:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750249829; cv=none; b=Fo5BOdNdcNuIYQy5YdbA7Tv8xNRmw1OVV6lOhjZHHq67xqtEZ4/mH2fN1bZKsbsdBzMD+afabaxMwZ+drqP2adL8HURHJvrN0uUKno7acA8mViLwmBygpU6qg9RZBdqEXizafXLweTwaEtNT+QARLD4uCMYYWjZG6A7RBLHxmcY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750249829; c=relaxed/simple; bh=D4rfI/dgpwr4p8/1Ep8pqKrbCEmpB4WZJuBHlVP4Le4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=MOGLAAOFSx8SB+w5lYj+haEABVs4aZ954+7uQ1+xR1CCdLoTt71mwLsd/AUvD90Y7nlwk3vFrQAudf2f0joyxFOOl9DAM3G/KtdJKTE/RbK2z+0PBoQVSL06ablTxguvRMQgTsRERr1TM37nqtb2NY+ciL5Yie5YKsjYd+h9M1c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nMzFDvsP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nMzFDvsP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 74FA8C4CEE7; Wed, 18 Jun 2025 12:30:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750249829; bh=D4rfI/dgpwr4p8/1Ep8pqKrbCEmpB4WZJuBHlVP4Le4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nMzFDvsPqxLn1B9i3oamFf9T0SmQ9lxFf85hW0ar7mgg/euMF6HKelkctIIKfhypP lEGHTTwlXhFmQdwLqAR1uPg0p2i9N3uRgcA+I7Ib7vhZevLLLuaJGD9FDWZfBsmrEO XqnnTzTGwQ1p5+NV0RD9k/ZlsHY/JSkVXultVPRAsf1+/VBNWO+WOreuWShujmZ9w7 u2jArgUGYApvsx8TLqCj6T73EYiAlVQySCEYQOPRS8K66Y2bjxChYSjDom0STHp3hz S/YgtQw7jBxTHfqqcMxtilue9twIbYg2GseKjRtTIvy9qJBndERtLcSTpS6Ii0APPl 2LQLRR/SghWtA== Date: Wed, 18 Jun 2025 13:30:24 +0100 From: Mark Brown To: Miquel Raynal Cc: Richard Weinberger , Vignesh Raghavendra , Yogesh S , Santhosh Kumar K , Steam Lin , Thomas Petazzoni , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org Subject: Re: [PATCH 2/8] spi: spi-mem: Take into account the actual maximum frequency Message-ID: <89c8da9d-8e4c-4e68-b306-5645154b4d60@sirena.org.uk> References: <20250618-winbond-6-16-rc1-octal-phy-upstream-v1-0-513202126013@bootlin.com> <20250618-winbond-6-16-rc1-octal-phy-upstream-v1-2-513202126013@bootlin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="RW5FZxWRZH+m65mW" Content-Disposition: inline In-Reply-To: <20250618-winbond-6-16-rc1-octal-phy-upstream-v1-2-513202126013@bootlin.com> X-Cookie: This bag is recyclable. --RW5FZxWRZH+m65mW Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Jun 18, 2025 at 02:14:19PM +0200, Miquel Raynal wrote: > In order to pick the best variant, the duration of each typical > operation is derived and then compared. These durations are based on the > maximum capabilities of the chips, which are commonly the limiting > factors. However there are other possible limiting pieces, such as the > hardware layout, EMC considerations and in some cases, the SPI controller > itself. Reviewed-by: Mark Brown --RW5FZxWRZH+m65mW Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmhSsWAACgkQJNaLcl1U h9BIRgf/ezr5jf2vKiJJqpU8isR3/C6aRXPA41Id7IowObzRPOdEL9epIfalMmCp YMAC1Om50TEUuBWM7CnMYiyDJV4EdXSpUpmlHlF/G4Akx8aF9Lf5K/KAWE3m99sU xe1rcn/TSU/RPGhFhF5IdLapcXvKsKWFoBIHY6i5kn7QvNydi3yUQEo+SQiYLSIp tmhnPhveSC9JxKAWuRJiGU+n9VKfh0zPSgXKgnG2ZTUIILHOYlUfEnYEG8vK/Wxg 7cTRWmiWGf+Q3lZHycNl01PuziSPH/ZxnD5uk7dp1Kh1pcc5H+fPovTFJVDNu8s9 ztFngOPei544anpJxOtsmFcJ69H+AA== =ZKto -----END PGP SIGNATURE----- --RW5FZxWRZH+m65mW--