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=-4.1 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 autolearn=no 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 84A28C3F68F for ; Thu, 23 Jan 2020 22:59:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 49B6A2467F for ; Thu, 23 Jan 2020 22:59:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579820341; bh=zEuOC3td88tpHLgeBxK5wnCGR91LNEGrEovg5lXPIWk=; h=In-Reply-To:References:Subject:From:Cc:To:Date:List-ID:From; b=bBeN6ad9hPk7AtqaTrQtptrgkjPx43p1pZQiRCcYXznKGNQ9HVwbZ8v744VVda8KU Ar1S55/jIXTtVJjH0EMvPJkJ4c4dpTuRvrNlSnjrY4wqmlR2cf6ANBE474YFRS7Ysy ae4SpaksbJ4H+x5AYyxc9GmOVdotZ6GXDd7lIKjI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729665AbgAWW7A (ORCPT ); Thu, 23 Jan 2020 17:59:00 -0500 Received: from mail.kernel.org ([198.145.29.99]:40492 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729149AbgAWW7A (ORCPT ); Thu, 23 Jan 2020 17:59:00 -0500 Received: from kernel.org (unknown [104.132.0.74]) (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 B264120718; Thu, 23 Jan 2020 22:58:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579820339; bh=zEuOC3td88tpHLgeBxK5wnCGR91LNEGrEovg5lXPIWk=; h=In-Reply-To:References:Subject:From:Cc:To:Date:From; b=Dluiq1xHhJ2Gs+g+ZFcZgKpL8P/eAedGwAdaXjAzu2QplsivR52091g9VkeMirFEP jebgeC+xNRqUWjKg8MGbvB0rCiLhlOn1Wj6kB1bwN08czoJej8O27m818gZ31q1arc TlWQuxLXCTj34+k7QbYjzyIG3eUIS1CZMkAYsiRA= Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable In-Reply-To: <1575527759-26452-6-git-send-email-rajan.vaja@xilinx.com> References: <1574415814-19797-1-git-send-email-rajan.vaja@xilinx.com> <1575527759-26452-1-git-send-email-rajan.vaja@xilinx.com> <1575527759-26452-6-git-send-email-rajan.vaja@xilinx.com> Subject: Re: [PATCH v3 5/6] clk: zynqmp: Fix divider calculation From: Stephen Boyd Cc: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Rajan Vaja To: Rajan Vaja , gustavo@embeddedor.com, jolly.shah@xilinx.com, m.tretter@pengutronix.de, mark.rutland@arm.com, mdf@kernel.org, michal.simek@xilinx.com, mturquette@baylibre.com, nava.manne@xilinx.com, robh+dt@kernel.org, tejas.patel@xilinx.com User-Agent: alot/0.8.1 Date: Thu, 23 Jan 2020 14:58:59 -0800 Message-Id: <20200123225859.B264120718@mail.kernel.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Quoting Rajan Vaja (2019-12-04 22:35:58) > zynqmp_clk_divider_round_rate() returns actual divider value > after calculating from parent rate and desired rate, even though > that rate is not supported by single divider of hardware. It is > also possible that such divisor value can be achieved through 2 > different dividers. As, Linux tries to set such divisor value(out > of range) in single divider set divider is getting failed. >=20 > Fix the same by computing best possible combination of two > divisors which provides more accurate clock rate. >=20 > Signed-off-by: Michal Simek > Signed-off-by: Tejas Patel > Signed-off-by: Rajan Vaja > --- Applied to clk-next