From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zeus03.de (zeus03.de [194.117.254.33]) (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 2443138F926 for ; Mon, 27 Jul 2026 15:51:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785167519; cv=none; b=dpdu4kaAXSxIh0vKVivfl1Is2gnMHB1mLVasbGYPZv7hJ29Vvbyj4x2cFtHcPSN2hSRRaoNH1Lm3OkpA296zCSx3T6I1ZldOG+dqgllkX+0KUxZtOC03c74hZf1lb3aiH0KyFCCwOJMzolUnENUuMM5XC5YIOTLXaEg4TSLCJQc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785167519; c=relaxed/simple; bh=4VRjDPXpUz5nr/ONs3h8eN0cltUxM/zj2dhOBv9VUvk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CUzVIyfuAhv+Q18kIwwOybm7Lc3iPSw6rwS4t68+gaZb51YrvxERswjH6hR8XnVMyjpQfz43peDMCNZK6/DS1RJzSMK5Oy9HhxvdQGmuseVhSSWeq2fvnxia4CvWd7ujnZOt81hI4arFzqIh62a+v0ExGR+udSBXh49Fa5T6j0Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=i5639RbD; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="i5639RbD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to; s=k1; bh=1y+3 WjlCp0prLe2Yyy5mqGad4x2ebeed3gFXOHwXGXw=; b=i5639RbDF2Cm+vHhKkpe mXxKBGYZTFeLCE4CJIhyO4AOog5vBZHVawChK4s8y5eZeOLUkscW0icRRzYBN+He RwJ3gK48qqwzBeTiuRVsDoKwifZtT2hYDGN3clhbboUukacMsfWJqd/rXfGWT1yz wT7OZr66Q29HDHethMY/5goeWl69b+Q0erkmJIqYRUAXjRpH+UHN7g1VkDCrqt9P lA0LzhI4oDIcTI6sHmgvBrcIjUiRxSEVQ88LYW7Hf0shfuJGypB5QazC6/B2m6g/ KfhrAIUDyXsq+b/TBv3yysA3vTuuuaZ53gu3jB4JdkR0M/ha9c1MlzPJH9hT1lHG fQ== Received: (qmail 655990 invoked from network); 27 Jul 2026 17:51:51 +0200 Received: by mail.zeus03.de with UTF8SMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 27 Jul 2026 17:51:51 +0200 X-UD-Smtp-Session: l3s3148p1@UXxcs5lX3L4ujnuy Date: Mon, 27 Jul 2026 17:51:50 +0200 From: Wolfram Sang To: Prabhakar Cc: Krzysztof Kozlowski , linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: Re: [PATCH v2 0/6] memory: renesas-rpc-if: Optimize transfer overhead and implement runtime PM autosuspend Message-ID: References: <20260727103449.3188105-1-prabhakar.mahadev-lad.rj@bp.renesas.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="uDbJRkIltbee1v1K" Content-Disposition: inline In-Reply-To: <20260727103449.3188105-1-prabhakar.mahadev-lad.rj@bp.renesas.com> --uDbJRkIltbee1v1K Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi Prabhakar, > This patch series optimizes the Renesas RPC-IF driver by significantly > reducing software overhead in both the direct memory-mapped (dirmap) and > manual transfer paths, maximizing transaction throughput, and introducing > runtime PM autosuspend to prevent aggressive power gating during > consecutive flash operations. Sounds great. I want to test it on R-Car V4H SparrowHawk. > These changes were benchmarked using flash_speed on the RZ/T2H EVK with > xSPI0/1 interfaces operating in 1S-1S-1S mode for write operations: 'flash_speed' from mtd-utils, I assume. Did you use other options than '-d' for testing writes? Thanks and happy hacking, Wolfram --uDbJRkIltbee1v1K Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmpnfpIACgkQFA3kzBSg KbbzCQ//X4/9osMEcycirXaHwkXJ3rlsCQ4d5hB8yW/SVU4W1ptYD2xzO4FPOxof l+qjIWOEIyl2ykn/S6wUC6Wdazxe2RzOhS5RBk4om96IHyGZH/TJAPZogB9PMrRt VisG3oUw8hCqKq+NywW0HzlCJagmPS7baSoqZrbztHg+3EKNwke/GpPMVf+Qn0kc 9SYrPLuB1gQsjRm/ZAURJ5w6omuubjcvNSawHFv4oJxfomPBmCC30vZ5c7s/wURs sQRf4frGL6mXAu7f3dMw3mAYRbH4N3QZQSy7Ogie1L6Ix7NNb2Zm4U0inYFH+ag3 isW/pzS91C6/dEoifYURCcQNTLEazqAu6EMSAfK4fRpGIw9YMYq/10YrffN/5GmB vgIrg61GtCb9WXfHGIOXrkBW4QhFxH3vVMdjZZUSTYVwLM7OnZv3jZymhcMHNgXD KctFS+1h2zyCsMIJLkju7bSRbwsffiHFJC9B48aB1YnzebAaVmDmRYAQoqDRmqW2 MDXFYnJFdyj7Lh9CHNA+qu2rFFQf+ezrMU/GHugaIazb2vkeBoLNEjt9XYhzECV0 FHci3ghF5VxXkZsUu6HCphynZEQ+jM9mFzgq3WJy3VR3D6slJ40ZpLTj+xkNGTlP EnnQnasjIogww6ONeqTNZsslLL8eL2iYgMqrBCPKdgMear0kR1c= =1RD9 -----END PGP SIGNATURE----- --uDbJRkIltbee1v1K--