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 X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38231C10DCE for ; Tue, 10 Mar 2020 06:04:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 02C2524679 for ; Tue, 10 Mar 2020 06:04:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583820283; bh=r2MPC5UtaW4E+Gx3vUdEl/eb7ySDkUz4DXRirRU3m1M=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=pFEDrSrpu6natQXKvBERa/GLeUcNPYcpJQstCRiLy9rwFgYqjfVNQtZjDzHmmMqfn joXBicaA2s5rmvG2YZGGBCk5riymz58R+RWJEyHhWj/F9OgQnVsduQsfTecZxtbTQy ZcT7qesxB4i/zLItKMp7xXpgzG2m/WYVdhLMJbxY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726293AbgCJGEm (ORCPT ); Tue, 10 Mar 2020 02:04:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:44438 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726100AbgCJGEl (ORCPT ); Tue, 10 Mar 2020 02:04:41 -0400 Received: from dragon (80.251.214.228.16clouds.com [80.251.214.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6EF36222D9; Tue, 10 Mar 2020 06:04:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583820281; bh=r2MPC5UtaW4E+Gx3vUdEl/eb7ySDkUz4DXRirRU3m1M=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=KN6ETD5wysJVebQR9jSbcf0KVdTLhMNlw0l7uwvCqnSSOmqmHlDvEn8rGnRTiAksi 0d/oDwkmigihBqVp+7r0aG6DTpvKk2ulzoZV6A3EGs00RcaVL6p16PeD/cDD8yLvZL hD8qQkhkKrvBVCkr8ObTi3u33FI5mDFLZsCla3Bk= Date: Tue, 10 Mar 2020 14:04:35 +0800 From: Shawn Guo To: peng.fan@nxp.com Cc: s.hauer@pengutronix.de, sboyd@kernel.org, robh+dt@kernel.org, viresh.kumar@linaro.org, rjw@rjwysocki.net, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, Anson.Huang@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, abel.vesa@nxp.com Subject: Re: [PATCH v2 05/14] clk: imx: pfdv2: determine best parent rate Message-ID: <20200310060434.GH15729@dragon> References: <1582099197-20327-1-git-send-email-peng.fan@nxp.com> <1582099197-20327-6-git-send-email-peng.fan@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1582099197-20327-6-git-send-email-peng.fan@nxp.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 19, 2020 at 03:59:48PM +0800, peng.fan@nxp.com wrote: > From: Peng Fan > > pfdv2 is only used in i.MX7ULP. To get best pfd output, the i.MX7ULP > Datasheet defines two best PLL rate and pfd frac. > > Per Datasheel > All PLLs on i.MX 7ULP either have VCO base frequency of > 480 MHz or 528 MHz. So when determine best rate, we also > determine best parent rate which could match the requirement. > > For some reason the current parent might not be 480MHz or 528MHz, > so we still take current parent rate as a choice. > > And we also enable flag CLK_SET_RATE_PARENT to let parent rate > to be configured. > > Signed-off-by: Peng Fan Applied, thanks.