From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from www537.your-server.de (www537.your-server.de [188.40.3.216]) (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 D293440961C; Wed, 7 Oct 2026 06:52:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=188.40.3.216 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791355942; cv=none; b=WuHwK0mW7LwweMhXOXUbCtN7L5V/465eKNpbOReEPJFEWeIVwJ0ORzSprzcLZ8D4X4P6wv/3esZ3F9dPDWP4OxMELpox1L+IkcDiDcr8d3+qaT4cSguntd6EAUdK0vu/BIGVZR/vwlUoQgp6WJQAArJ2/HuVKi7lu8oZnj8Evgs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791355942; c=relaxed/simple; bh=OexaRCcgt6XYkDM8a+OmC5h/6OPxo9ybl1gjEFZyPZY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=XgqEZHsrcP9n5fU5Lift/AQ4yPPd7NIU+3wa2GeBtnVBNPqBl3sUKRoswc6cLjBbdnyi+BzSzjsCSv32HrzgW3KexbiRDSTZx+ixIHwqtvLho8ICgYDNzY/USibN4mfvibhESEpybPl+N7rWJrFGDxjRAqJ0//xRFurv2t2Uqq4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ew.tq-group.com; spf=pass smtp.mailfrom=ew.tq-group.com; dkim=pass (2048-bit key) header.d=ew.tq-group.com header.i=@ew.tq-group.com header.b=q/j60Yb1; arc=none smtp.client-ip=188.40.3.216 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ew.tq-group.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ew.tq-group.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ew.tq-group.com header.i=@ew.tq-group.com header.b="q/j60Yb1" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ew.tq-group.com; s=default2602; h=Content-Type:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID; bh=OexaRCcgt6XYkDM8a+OmC5h/6OPxo9ybl1gjEFZyPZY=; b=q/j60Yb13/I9m6w0+nIy5uqC3r AOYolLvel59Eq9GOidlv2e+1esaRmd1CyZRrut7gT2ANNsVk+AP+6Ui9tdLH6kLIpEPrQO4Oe3uhX Sx0wdJQrI2HS8Lk9oZFCM/WICPTAOTOvenLSlTzEeBgZdR9mYxflW2t53TqwejP+Q5DYsavgmIEz0 k26N7WP4QsnKjHKOcg+Hib/LNWCLoIPqLTTz9lMM4w90fxDt7PFf7LVS02bkZZv3Bwoo7k4wDIhAG ohfMTcxE97n8Ijg1cLxTg/9qGS0f1ce9Bf/SS8vXgZFE1tZbWYq1/3/fvYLPZK6oQDOqFMeofJSyM 1qzK2n4A==; Received: from sslproxy03.your-server.de ([88.198.220.132]) by www537.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96.2) (envelope-from ) id 1xELVc-0008ir-0L; Wed, 07 Oct 2026 08:52:12 +0200 Received: from localhost ([127.0.0.1]) by sslproxy03.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1xELVc-000II6-0d; Wed, 07 Oct 2026 08:52:11 +0200 From: Alexander Stein To: Fabio Estevam Cc: Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Markus Niebel , linux@ew.tq-group.com, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/3] arm64: dts: imx8mn-tqma8mqnl: restrict clock for SPI-NOR flash Date: Wed, 07 Oct 2026 08:52:09 +0200 Message-ID: <8205013.DvuYhMxLoT@steina-w> Organization: TQ-Systems GmbH In-Reply-To: References: <20261006132512.2246196-1-alexander.stein@ew.tq-group.com> <5021357.mvXUDI8C0e@steina-w> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-Virus-Scanned: Clear (ClamAV 1.4.3/28145/Tue Oct 6 08:26:12 2026) Hi Fabio, Am Dienstag, 6. Oktober 2026, 15:59:22 Mitteleurop=C3=A4ische Sommerzeit sc= hrieb Fabio Estevam: > Hi Alexander, >=20 > On Tue, Oct 6, 2026 at 10:50=E2=80=AFAM Alexander Stein > wrote: > > > > Am Dienstag, 6. Oktober 2026, 15:46:50 Mitteleurop=C3=A4ische Sommerzei= t schrieb Frank Li: > > > On Tue, Oct 06, 2026 at 03:25:10PM +0200, Alexander Stein wrote: > > > > From: Markus Niebel > > > > > > > > The FlexSPI controller uses quad SPI with internal clock recovery. > > > > The clock is therefore restricted to 66.666666 MHz according to > > > > data sheet. > > > > > > Which datasheet? I suppose NOR flash datasheet, can you provide link > > > here. > > > > The i.MX8M Nano data sheet Rev 5 09/2022 section 3.9.1.1 "SDR mode with > > FlexSPIn_MCR0[RXCLKSRC] =3D 0x0, 0x1, 0x2" Table 55. "FlexSPI input tim= ing > > in SDR mode where FlexSPIn_MCR0[RXCLKSRC] =3D 0x0" lists 66 Mhz maximum= for > > "Frequency of operation". >=20 > From the commit log, I also got the impression you were referring to > the SPI NOR datasheet. >=20 > Please clarify that in v2. >=20 > Also, shouldn't all patches in the series contain a Fixes: tag? Thanks for the feedback, I'll adjust the commit message in v2 and add a Fixes: tag as well. Best regards Alexander =2D-=20 TQ-Systems GmbH | M=C3=BChlstra=C3=9Fe 2, Gut Delling | 82229 Seefeld, Germ= any Amtsgericht M=C3=BCnchen, HRB 105018 Gesch=C3=A4ftsf=C3=BChrer: Detlef Schneider, R=C3=BCdiger Stahl, Stefan Sch= neider http://www.tq-group.com/