From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 006C0D5CCA8 for ; Tue, 16 Dec 2025 10:25:24 +0000 (UTC) Received: from mx.denx.de (mx.denx.de [89.58.32.78]) by mx.groups.io with SMTP id smtpd.msgproc02-g2.19172.1765880720825194243 for ; Tue, 16 Dec 2025 02:25:21 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@denx.de header.s=mx-20241105 header.b=UrrbbLVv; spf=pass (domain: denx.de, ip: 89.58.32.78, mailfrom: pavel@denx.de) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 398D5106680B9; Tue, 16 Dec 2025 11:25:14 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=mx-20241105; t=1765880718; h=from:subject:date:message-id:to:cc:mime-version:content-type: in-reply-to:references; bh=5Hf4lBjCcU4zjKT+kxVdWK3mp3RvOQE5tBH+iAu4z+M=; b=UrrbbLVvV64aN6Wr+8w0qY8awed1c3tlbmbWSBxKCQ/YZ+Z7O+BBFJD/p+UGEmd17m5RMQ lwVLG3EpPYAwkhXINGslO3Vm84wRHn1MngcLMdDHi6fa98gpt+yogAoaTePN+LW9AO10CU cw7Q/GZ+cng9KZJV6CVMYNTGc4/Lgqo/KfLXnLQTfqIIyVtsVcEFraLNJRtGVizpyOJd68 AxmpYKqvzjVNqoSzLVB9g4DSUDXFA7l91RP2Pc2zfsgnXFWSFNHy17YAWqS2ut7+wc03JG mYGP6lF6AONkIkFP/5UWjo7TwEPkykBJnB+DqULClTVyKLtK8S/6rzg4eJYy1Q== Date: Tue, 16 Dec 2025 11:25:13 +0100 From: Pavel Machek To: Biju Cc: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu , Biju Das , Lad Prabhakar Subject: Re: [PATCH 5.10.y-cip 0/3] Add 64-bit polling support Message-ID: References: <20251215125316.137879-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="F1vfFFpkNHwzG3je" Content-Disposition: inline In-Reply-To: <20251215125316.137879-1-biju.das.jz@bp.renesas.com> X-Last-TLS-Session-Version: TLSv1.3 List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 16 Dec 2025 10:25:24 -0000 X-Groupsio-URL: https://lists.cip-project.org/g/cip-dev/message/21081 --F1vfFFpkNHwzG3je Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > As per the RZ/{G2L,G3E} HW manual SD_BUF0 can be accessed by 16/32/64 > bits. Most of the data transfer in SD/SDIO/eMMC mode is more than 8 bytes. > During testing it is found that, if the DMA buffer is not aligned to 128 > bit it fallback to PIO mode. In such cases, 64-bit access is much more > efficient than the current 16-bit. This looks okay to me. I can apply it if it passes testing and there are no other comments. Best regards, Pavel --=20 In cooperation with DENX Software Engineering GmbH, HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany --F1vfFFpkNHwzG3je Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCaUEziQAKCRAw5/Bqldv6 8iL+AJ9MBGQ/S5EnyPSxhqebqSQrCLcXYQCggUM6Mg+zOAA8n0TQcoVNIamSm+Q= =ObNC -----END PGP SIGNATURE----- --F1vfFFpkNHwzG3je--