From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F3AC3606A319 for ; Thu, 22 Oct 2026 12:23:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=YcqB80ht; dkim=fail reason="signature verification failed" (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=WpTfO23o DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:References:From:Cc:Subject:To:Message-Id:Date:Mime-Version: Reply-To:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=o0P0JWH0Jf7PRAC3SbJdyMVm9r5c72ebtMxdFtkZoKA=; b=YcqB80htR4r+to9SFrOeSlFLLj wRKiWaHys29QWZ0afLKW6oW+Z9fL24Yy96mobBkqRxiNnqPVTxBPR2iDz4bKSfjnLO+QrUUzm4WM3 6sbsv3esNVpPuV5U9uqSc9S11hVdanacj/4LfK3FGZJ0ESiBEYMVMvSHxXCfuagO+h1Dyfd4Sy7UH 8wZwH85bA5QTvLl+qdBUTQhvn2MMDVdJTH1H48BPZK2QFVs5thaqsR0sxlF2NzE000Gi3dedfky3t p7IbBaiouXyNM/1Iv3xg8t4er+dMrEGqzUVSsXvu2L4nXV+bcsaJdjN62LB+/+7uksI+xq/pNat2e 7/OBSdPA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xJrpT-0000000E4CB-2ykX; Thu, 22 Oct 2026 12:23:31 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xJrpS-0000000E4Bt-3z6X for linux-mtd@lists.infradead.org; Thu, 22 Oct 2026 12:23:31 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with UTF8SMTP id 098D760235; Thu, 22 Oct 2026 12:23:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with UTF8SMTPSA id 387CE1F000C4; Thu, 22 Oct 2026 12:23:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792671809; bh=akLxImTf0y0bbfRVy+rx+txPUMIriMcoQnnq8uHmVmU=; h=Date:To:Subject:Cc:From:References:In-Reply-To; b=WpTfO23oU7nvT4dJXJVvqX4MnSqsi4TxRw32Bjls2eTe1EifZXQ7a5MbMsIBxKxu4 D8r/fX/VNZdAz/SD8R+4gT9HxJjqUir7fZEcA+SA0YfjVU9cwJGB8T9yvDiF6+jpDY vyfNeKa1QFGM3RsxxR7Ryk4ACS+ucGk4yD+2E14JFqPDWRsqYKFKLxTj9UKuhPogYp W7h2BBFqkaK1e3jOLdEOIRZu+RNbo0rEL3BcRHB6/Wje58Gn7n4Botg5kpW6NJeoR1 OeDpyz6SE29VCBZEGRXAHw/Hehs2fXVpM4OnWnFS3a7VxXHOkXuiJEWaG1egB08vXM lNaKuhIzcO4Wg== X-Archived-By: Mime-Version: 1.0 Date: Thu, 22 Oct 2026 14:23:26 +0200 Message-Id: To: "Changhuang Liang" , "Pratyush Yadav" , "Takahiro Kuwano" , "Mark Brown" , "Miquel Raynal" , "Richard Weinberger" , "Vignesh Raghavendra" Subject: Re: [PATCH v1 4/4] mtd: spi-nor: macronix: Add 1-4-4 DTR read support for MX66L1G45G Cc: , , From: "Michael Walle" X-Mailer: aerc 0.20.0 References: <20261022102614.75696-1-changhuang.liang@starfivetech.com> <20261022102614.75696-5-changhuang.liang@starfivetech.com> In-Reply-To: <20261022102614.75696-5-changhuang.liang@starfivetech.com> X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1243476819611566534==" Sender: "linux-mtd" X-Spam-Status: No, score=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 --===============1243476819611566534== Content-Type: multipart/signed; boundary=1abe0f32d48531c87fdcbb594fab47308a170e73b30effc29e3ae893b303; micalg=pgp-sha384; protocol="application/pgp-signature" --1abe0f32d48531c87fdcbb594fab47308a170e73b30effc29e3ae893b303 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 On Thu Oct 22, 2026 at 12:26 PM CEST, Changhuang Liang wrote: > The MX66L1G45G supports the 1-4-4 DTR read mode. This flash uses 6 > dummy cycles by default in 1-4-4 DTR mode, but the kernel's SFDP > parser does not derive any SNOR_HWCAPS_READ_1_4_4_DTR capability from > the BFPT table So why don't you fix that? > , and 4BAIT only filters already-known capabilities. > The exact number of dummy cycles is also not directly given in the > SFDP tables. What is BFPT 3rd DWORD bits 4:0 then? Could you please dump the SFDP for this part? See [1]. -michael [1] https://docs.kernel.org/6.2/driver-api/mtd/spi-nor.html --1abe0f32d48531c87fdcbb594fab47308a170e73b30effc29e3ae893b303 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iKgEABMJADAWIQTIVZIcOo5wfU/AngkSJzzuPgIf+AUCatoAPhIcbXdhbGxlQGtl cm5lbC5vcmcACgkQEic87j4CH/hYEAF/R5VryoZY5m+84ealf3tkGJWe5jEehB4J 3pt7F6qQO6SxZ7KGL9ighYRTdlvkwQWaAX9xhYxaTr2ler0r5fTVSZyj/2QGT23K 1twtzXZn7XH6aGWEe1N0rXtPcPuZsV9owu4= =2E3m -----END PGP SIGNATURE----- --1abe0f32d48531c87fdcbb594fab47308a170e73b30effc29e3ae893b303-- --===============1243476819611566534== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/ --===============1243476819611566534==--