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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E752AC352A1 for ; Wed, 7 Dec 2022 02:18:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:To:Cc:From:Subject: References:In-Reply-To:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bDx1YAzCnqLOd14oHEEkjmiT+55x0M8ZmReFsfI8kmc=; b=KNu7bOiSz0bY0x adsJOBs9kkWFxt0gdte48Fj2t6YykpytlX57KED2CbMpWYaLqA013dNevd8PgPLawedXvLJGHjf3F C95oY9ijgZ95kXce2LWOX3ZVy+KCDnJEp6ZpI3hJI3Hw5jy2ksIOXhOvjO5qhJ8F7UoA1pnLb1gZm fxvxFcCSjHtT//KqR8RiuXkTstxaB2sJB8dX12okg6ESSUxtYsVKjWzKW09WL2gb7BPVutADo8e91 GDobwzkIjmDIOp1UR58tYqsasnO0czjFkjGwMQ+G/eDN04a7MUugezMVu4fnnBCIqdZXD6E6BuIpq 7hYhbPPKKglcVmtDqUdA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p2k0J-008XTN-59; Wed, 07 Dec 2022 02:17:47 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p2k0G-008XRt-Ny; Wed, 07 Dec 2022 02:17:46 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 49659611DD; Wed, 7 Dec 2022 02:17:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A3596C433C1; Wed, 7 Dec 2022 02:17:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1670379462; bh=lxh+qkWtrAkQD6FWNVfNsV2V1Ki+c1iwrz1a+xcetr0=; h=In-Reply-To:References:Subject:From:Cc:To:Date:From; b=rshxMWMbp4jY5A3Nq2O5c7KmmaX6MZr80aizs8RFHHgf5gnyu5edJNDFxhhk7z7/Y ckBIRqkHc0yxl7ApXxB+NTs8/dTIiruW8ELggtlnE7epcE0x7bWR2SWPuX8q5hf4fG dVeJLhQrgpM5XWrCuJbWrbCcY5C5HrE7HmFyHyBM4pakwkMAj9Urz9TrRAWFu2d0QO vvDb4UkZZXe0rhD+MGA6otPd8oBVuFRPrVns2+L6zwtkorJou3Z7aXhSdwdphbsaFU wgJQBRZPAyOXQVs6C1I0uwvoGkcQl0R06amskDTpcv7UMC1TLnWflgELbrNjep7c4U tyLzbSifoOr9A== MIME-Version: 1.0 In-Reply-To: <45463950-7a4f-758d-d6a1-b8fdf9bfd319@seco.com> References: <20221027191113.403712-1-sean.anderson@seco.com> <20221027191113.403712-5-sean.anderson@seco.com> <20221027230331.19C2FC433D6@smtp.kernel.org> <5f00ede6-10f5-c11c-ee21-54460c1f98b0@seco.com> <20221101201020.B6180C433C1@smtp.kernel.org> <45463950-7a4f-758d-d6a1-b8fdf9bfd319@seco.com> Subject: Re: [PATCH v8 4/9] phy: fsl: Add Lynx 10G SerDes driver From: Stephen Boyd Cc: Rob Herring , Bagas Sanjaya , devicetree@vger.kernel.org, Krzysztof Kozlowski , linuxppc-dev@lists.ozlabs.org, Ioana Ciornei , linux-arm-kernel@lists.infradead.org, Camelia Alexandra Groza , Madalin Bucur , Jonathan Corbet , Michael Turquette , linux-clk@vger.kernel.org, linux-doc@vger.kernel.org To: Kishon Vijay Abraham I , Sean Anderson , Vinod Koul , linux-phy@lists.infradead.org Date: Tue, 06 Dec 2022 18:17:40 -0800 User-Agent: alot/0.10 Message-Id: <20221207021742.A3596C433C1@smtp.kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221206_181744_857215_2DEACBD9 X-CRM114-Status: GOOD ( 12.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Quoting Sean Anderson (2022-11-01 16:27:21) > On 11/1/22 16:10, Stephen Boyd wrote: > >> > >> Oh, I remember why I did this. I need the reference clock for clk_hw_round_rate, > >> which is AFAICT the only correct way to implement round_rate. > >> > > > > Is the reference clk the parent of the clk implementing > > clk_ops::round_rate()? > > Yes. We may be able to produce a given output with multiple reference > rates. However, the clock API provides no mechanism to say "Don't ask > for the parent clock to be rate X, you just tried it and the parent > clock can't support it." So instead, we loop over the possible reference > rates and pick the first one which the parent says it can round to. > Sorry, I'm lost. Why can't you loop over possible reference rates in determine_rate/round_rate clk op here? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel