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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_MED 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 A1F0CECDE5F for ; Sat, 21 Jul 2018 20:46:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 534FC20854 for ; Sat, 21 Jul 2018 20:46:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="zqBIib/S" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 534FC20854 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728318AbeGUVk4 (ORCPT ); Sat, 21 Jul 2018 17:40:56 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:51944 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728236AbeGUVk4 (ORCPT ); Sat, 21 Jul 2018 17:40:56 -0400 Received: by mail-wm0-f66.google.com with SMTP id h3-v6so11951041wmb.1 for ; Sat, 21 Jul 2018 13:46:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=message-id:subject:from:to:cc:date:in-reply-to:references :mime-version:content-transfer-encoding; bh=ugJCCvwqMRhQ7YJEMV3exptme4nw/xVD44+Rlete6ac=; b=zqBIib/SbiO81gWimb1KaVev5FgT/GttAAuFClcOlkVAQb6AeBUlS+ZwX1sSjiFqd0 OIauq/g6Awr+WzD7Ng6d1bChrBcg/It6seMql/Dy8SssTIDOZ/BffzM4nfhQMrIO4LhX Z2ty1segP60oN280a3NPQCnX+i1o69n6Cu/yidKBMWmoKsObpaiZFsTWFcAWSUDbQOAp 2ipkZ4rnvIB/yX6BUUsT2MHDAQtafCXNHIirM0/4GUdtAXjalc299krG6Qa69OdTP0oA oAcdqGCZkpQNZwpo2qnxoO5IUDr0IOQr2xTxOsjiKs1rFdH5O1Rw2GUPXieK/QKP/+tf wYpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:mime-version:content-transfer-encoding; bh=ugJCCvwqMRhQ7YJEMV3exptme4nw/xVD44+Rlete6ac=; b=maIx4CKF3WbA6LbCufUb2TZf+jV86xJSVKegG7X55Z3IGiQ0U3du/56g2XC6VnOtXO jdr2BdBfVltG1gZk+y0PJelElQeEVZZZOUBO3NwdFHVZNuv7e3lea+T3iwL5/iX+l0Af nwT59CFp9Fw2sfyYUtoTfm+ysMubA7D1z1/oxRBYrRRTHk/ytAzj3jLquDWJ269aPqE2 Mp8fJkXu7yGlJZUd562KY3xLZA3urMqJ7RaWgX/jMavPnG6xjxGhpCuzVyhr8x3nm6wS ZZZJsR4uAGUg8RNEmWMbD+0KWPSRuUrhQK4u34SgjxA2YxlXzlsPqBXhAqCyfPbvXY8z imzg== X-Gm-Message-State: AOUpUlEAkeLngLz3aCmQtLRc9EjqEhisHWkWOMrT4DdFJdTtGDvknn7C 8PCwHoC20sOXoPfk9ymqk1eI2A== X-Google-Smtp-Source: AAOMgpcaG2hygnhI7WTZGEJa/KZIKq0AH/2t54vnOv+6aBX2HDvDQcrVos755PVjA3izAlR4/JCWLw== X-Received: by 2002:a7b:c01a:: with SMTP id c26-v6mr4308531wmb.33.1532206012653; Sat, 21 Jul 2018 13:46:52 -0700 (PDT) Received: from boomer (cag06-3-82-243-161-21.fbx.proxad.net. [82.243.161.21]) by smtp.gmail.com with ESMTPSA id g125-v6sm5268842wmf.16.2018.07.21.13.46.51 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 21 Jul 2018 13:46:52 -0700 (PDT) Message-ID: <1532206010.26720.84.camel@baylibre.com> Subject: Re: [PATCH 3/3] clk: meson: clk-pll: drop hard-coded rates from pll tables From: Jerome Brunet To: Martin Blumenstingl , Neil Armstrong Cc: linux-amlogic@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, khilman@baylibre.com Date: Sat, 21 Jul 2018 22:46:50 +0200 In-Reply-To: References: <20180717095617.12240-1-jbrunet@baylibre.com> <20180717095617.12240-4-jbrunet@baylibre.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.6 (3.26.6-1.fc27) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2018-07-21 at 22:16 +0200, Martin Blumenstingl wrote: > > We could even add ranges instead of table when we know the PLL supports a well-known continuous dividers range. > > I had a look at the sys_pll settings on Meson8b, here's what > Meson8/Meson8b/Meson8m2 support for sys_pll: > - 50..74 > - 76 > - 78 > - 80 > - 82 > - 84 > - 86 > - 88 > - 90 > - 92 > - 94 > - 96 > - 98 Are those values with the same predivider (n) value ? I suspect the ability of the DCO to lock might depends on its input rate and an m range So if n change, it might possible that the m range will be different. ... at least, that's my guess :) > > (I'm providing this info because it may help finding a decision > whether ranges are good or not. I have no preference)