From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 5D53E471CE4; Fri, 25 Sep 2026 11:59:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790337603; cv=none; b=GQbKRsMeRdoV0AUn1GveTtNfkSGwhlo2HZRyszhV9Ne67c92qlMKNyA7DnPIrWfJhAPJZbAguzZrtVU6xoNIdLsT0477WVg06kXoR/nzabz/qiFdIQLUCLSjWDI9YTGhbY6pLt98BKpkW/AhmhPfXZUkfJqfQtAdGEy0GuZWM28= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790337603; c=relaxed/simple; bh=wcFx+NSLHXnNYa8iMdvZaIg7OJRD4w5e5OPyy2AjYGI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=F5PmvU/Yc+H12kpBWRJq8umkKxL1b2Rii/f7AubjNtQBcq1wSwzs3mG3d3WyCKru4ZTsx7Sz5g7Z1K4cNCFk0p3GMXiwH9PvS+dk1QhSSGeYLm9W9uNN525VdZaCVf5AVinV+NNB6GqkBdnJ2WPvM5S4jL0GRxud9Gf2ajqzURA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mSjRlykW; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mSjRlykW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1112D1F000FF; Fri, 25 Sep 2026 11:59:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790337594; bh=yao8TTMKIXgdl3wojlTg6Y/FV7O0NF2CMfYlrTOp9Z4=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=mSjRlykWg86Pu/F5pZgdu+XMDVimFtOYOZIljKg1P5E3dX88R1AGcXUDCo9B3qOT1 l2DYpCyMSOEYqTWEkc3I0iw1bb9xY4mhaGznERZiWWfD5M/O44bDcY/S3LB20qnSWk fMCTe4duP1S5JUTr/BjOO8hvPQOqi2ROhZapmoSNM6XYX2yOPQD/puh7tLADBJEybm QjAmA5I4pCZln8uFPMdeA1VFKcg06nE7xBFAj269LT81vuGwSLrZjmY4e8tNU3M6Z0 5dgSzQozSQqr5WE3uKkW/TKS9efUKP+zrmEZ4JW3QnKbCmzIbsmD2TaaMwU0GNqbns YoWhtVKeUehzQ== Date: Fri, 25 Sep 2026 12:59:49 +0100 From: Mark Brown To: Miquel Raynal Cc: Nuno =?iso-8859-1?Q?S=E1?= , Fei Xie , Richard Weinberger , Vignesh Raghavendra , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Parshuram Thombare , linux-spi@vger.kernel.org, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 2/4] spi: cadence-xspi: add ACMD support for SPI NAND Message-ID: <85dc596e-4378-4d23-b48e-80053cb5166d@sirena.org.uk> References: <20260921093701.1341766-1-fei.xie@horizon.auto> <20260921093701.1341766-3-fei.xie@horizon.auto> <20260923061211.1608907-1-fei.xie@horizon.auto> <67f4e1a4-fc0e-4b2b-b41e-8dbb33227302@sirena.org.uk> <87pky1ll4g.fsf@bootlin.com> <87ecehljdy.fsf@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="jDLHmqGwvebW3fWJ" Content-Disposition: inline In-Reply-To: <87ecehljdy.fsf@bootlin.com> X-Cookie: Love America -- or give it back. --jDLHmqGwvebW3fWJ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Sep 25, 2026 at 12:23:21PM +0200, Miquel Raynal wrote: > > As for PROGRAM and ERASE commands I really did not saw any added > > value. > Yes, most of the time is spent in the wait_ready, which is not getting > faster with hardware automation. It might potentially help a heavily loaded system if you can do fewer waits, the rest of the tasks running on the system will have more time if we're doing fewer waits for interrupts. Not sure it'd be enough to write home about though. --jDLHmqGwvebW3fWJ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmq2YjQACgkQJNaLcl1U h9BG/Af/VlsMwBCFOEYj/oDnzW99d3z6TFME0rFxNTBnEzGCGCwQXc5d7DSDtg84 XV7214iwuiQXIFuZpbAXAETQ2r0W24h1lISlLeKyqlkKmBQ14RGQJNpUVmv80zqs aWk7Q3qFkWWnJJrPFNiApBREsaTraPIXydnWkx5khAjUNn5U7kTWWPbB+ohcsLEQ TFlyHV9six7mwAZeUMqz606OltqhLBHxPF8sKp+6/PhhlubMYf9DYtwGUHbGYVRp ucYW2ySARCKDuRWanGABrLA1DRuTUd9OLzx71srTgHR5Z2TsSvGsu/7kNvcnAw0c YPXZKonOnwLBQTzkS+gGouRWZDyAPg== =ueYj -----END PGP SIGNATURE----- --jDLHmqGwvebW3fWJ--