From patchwork Tue Apr 4 10:11:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 79116 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp3039973vqo; Tue, 4 Apr 2023 06:45:27 -0700 (PDT) X-Google-Smtp-Source: AKy350YSXyp9Rvm9zqiMCbFXgFkBFXAySoljDTtqIFyJ8FxVCB9kzZ5658xzmn/Y17GZjlbVvnxq X-Received: by 2002:aa7:9ec8:0:b0:62e:407:fc69 with SMTP id r8-20020aa79ec8000000b0062e0407fc69mr2480138pfq.21.1680615926944; Tue, 04 Apr 2023 06:45:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680615926; cv=none; d=google.com; s=arc-20160816; b=QyksJPZqR/k1WYL9O802LZLdmFIT62lgJsZWSiKcrGcJ6qIDsy3BCGc330mRvx8dgj 2B9qQ9Q9pKtNce1ZMYqHoSToxQd9l2obgyRtIe8Fqd2mfbfIjifBc/sMVx5vfcj+LbL5 FvUtdDV2qNHY/NAc/Gw1IJAWqmhs2o4mrNIs2pzec3V7Xi1xd6/BBIMeKSj6IS/yjfQ5 Amf8ODkXgYkU+ksx5unu9N40ORghfkyCyk7KFc4wbfntbrBqlPVsyZlbR2jyS8yZH87l vHItz32Rs01OJhap+XcIpU0OFbuK2YTkw/BMcOChe/CWIedvSIZ0kSe3nEQoHZFjYdp2 fBbw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:in-reply-to:references:message-id :content-transfer-encoding:mime-version:subject:date:from :feedback-id:dkim-signature:dkim-signature; bh=sPTwdBQk8uUKcSRaRMSmThBHaieWdvgI+8I8CW4DhTw=; b=Rk5r2jAD4viYuUNQPPiie6gASxzSiaUz6eSgs5l3VHGk3jQo7/80RgpHrqdWYuj13s hmb5oCwsw9VsIlMlVkn95rLCRCkJsmFbZVSfycmnLQDWOUoOmaeHzlYw9sN7opw+nWQd Kvtou5iit/Y9vPMfj8k9Yx9x2+mScakXhDvDG3L/mG6n6L+vX1q1O5wcx7DPgbW4IsSM qFN7SGU+LgDP/WZ5umr08y+4sDctLzOnr1asw/exDTiohxbTqZnsSaxvxuZTiVO7tidC qw8WvknT1bYMS+/Ai7/Ur6BW+a8kHN1v6pHPO1w72wfVGJyKsc+OmZ+ekGWr2W7TZbr/ YOrw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@cerno.tech header.s=fm3 header.b=rzKgnZxn; dkim=pass header.i=@messagingengine.com header.s=fm2 header.b=GWmTcQ+W; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=cerno.tech Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id s11-20020aa78bcb000000b006275349409bsi8556441pfd.331.2023.04.04.06.45.11; Tue, 04 Apr 2023 06:45:26 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@cerno.tech header.s=fm3 header.b=rzKgnZxn; dkim=pass header.i=@messagingengine.com header.s=fm2 header.b=GWmTcQ+W; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=cerno.tech Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235032AbjDDNdC (ORCPT + 99 others); Tue, 4 Apr 2023 09:33:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41920 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235061AbjDDNc4 (ORCPT ); Tue, 4 Apr 2023 09:32:56 -0400 Received: from new3-smtp.messagingengine.com (new3-smtp.messagingengine.com [66.111.4.229]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D3E140E6; Tue, 4 Apr 2023 06:32:50 -0700 (PDT) Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailnew.nyi.internal (Postfix) with ESMTP id E6ABC581F8B; Tue, 4 Apr 2023 09:32:49 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute2.internal (MEProxy); Tue, 04 Apr 2023 09:32:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cerno.tech; h=cc :cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to; s=fm3; t= 1680615169; x=1680622369; bh=sPTwdBQk8uUKcSRaRMSmThBHaieWdvgI+8I 8CW4DhTw=; b=rzKgnZxnlBaCOTBFoaOfQUHUmeyr2iV3dkntLiuqyPgwW3TE1h8 jBJrn/Xw0RqwTMZUyRpMA+lGsjQxt46AHzKGix0wsWg77uS27iSjVL1MJzlBqVtO jUI6Z4QlANgYVfAuFS/YqnrShCikG/RtxoTo+Pdg/vQK0ixuwBgPv68Ir0zbod+l MdUXF9Te/woTMXMmXuiEwyfn7AlIJEiZfbPO2sAdSS977zk6pqXeyxnB3vsv5i7X ljuDQomV+eosJeFR1j1JV5h33W8aXJSEUA5lz6PxUkIZ3EHB/HTPR4uIamQFlv0m 4I85eGSd1xzSkzSZ/MRtSowOKDwHxBYFkLA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t= 1680615169; x=1680622369; bh=sPTwdBQk8uUKcSRaRMSmThBHaieWdvgI+8I 8CW4DhTw=; b=GWmTcQ+W1+0x7cDNrAYaDAWy7IhYmIA3AeYEqEQPdjAT8Nlt+Jg /1dM+oG1QRGLQ4AkyPM8RSKg4qeBAJWUJ3lyUkwnxKqM0TytNlxcEOe3wuog2AB0 nd5LeZDxaL3Mk9gBhNMHcG/GDBdeQOm0PjGAsqmZoj2iCd+JFmUniVHVt3rQz7ui 4cznQ+mEWqMJqf0rtRCM/uYpk+6gOQpIQ3DTB3ijrrWP9brXgw2EuvbJF/nqGzS+ jSYKHnV/rzkSJdhVzDFkXOlWL5Q5zV78wEQRmZIeeakbvs0frB4FEHJz/kcp2fbV 53EqHtr5jiPnYe0w1Ar8/zpqAXmYIwmhcfQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvdeiledgieehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephfffufggtgfgkfhfjgfvvefosehtjeertdertdejnecuhfhrohhmpeforgig ihhmvgcutfhiphgrrhguuceomhgrgihimhgvsegtvghrnhhordhtvggthheqnecuggftrf grthhtvghrnhepvedvleeijeegvdekffehkeehieelhfeggfffheetkeeuledvtdeuffeh teeltdffnecuvehluhhsthgvrhfuihiivgepudenucfrrghrrghmpehmrghilhhfrhhomh epmhgrgihimhgvsegtvghrnhhordhtvggthh X-ME-Proxy: Feedback-ID: i8771445c:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 4 Apr 2023 09:32:48 -0400 (EDT) From: Maxime Ripard Date: Tue, 04 Apr 2023 12:11:31 +0200 Subject: [PATCH v3 41/65] phy: ti: j721e-wiz: Add a determine_rate hook MIME-Version: 1.0 Message-Id: <20221018-clk-range-checks-fixes-v3-41-9a1358472d52@cerno.tech> References: <20221018-clk-range-checks-fixes-v3-0-9a1358472d52@cerno.tech> In-Reply-To: <20221018-clk-range-checks-fixes-v3-0-9a1358472d52@cerno.tech> To: Michael Turquette , Stephen Boyd , =?utf-8?q?Andreas_F=C3=A4rber?= , Manivannan Sadhasivam , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Max Filippov , Charles Keepax , Richard Fitzgerald , Maxime Coquelin , Alexandre Torgue , Luca Ceresoli , David Lechner , Sekhar Nori , Abel Vesa , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Matthias Brugger , Geert Uytterhoeven , Dinh Nguyen , Peter De Schrijver , Prashant Gaikwad , Thierry Reding , Jonathan Hunter , Ulf Hansson , Linus Walleij , David Airlie , Daniel Vetter , Vinod Koul , Kishon Vijay Abraham I , Alessandro Zummo , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Paul Cercueil , Orson Zhai , Baolin Wang , Chunyan Zhang Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, AngeloGioacchino Del Regno , linux-arm-kernel@lists.infradead.org, linux-actions@lists.infradead.org, patches@opensource.cirrus.com, linux-stm32@st-md-mailman.stormreply.com, linux-mediatek@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-phy@lists.infradead.org, linux-rtc@vger.kernel.org, linux-sunxi@lists.linux.dev, alsa-devel@alsa-project.org, linux-mips@vger.kernel.org, Maxime Ripard X-Mailer: b4 0.12.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=2104; i=maxime@cerno.tech; h=from:subject:message-id; bh=KJ0m7KhNk3ZqSikj1NqJB8enXIM/KPxluwVcT/ZqeYM=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDCna37ddK/yy4Pm27Ns7fjYLhlyZx5ix8vsNBX6eiTt6Z7dF XHkq0lHKwiDGxSArpsgSI2y+JO7UrNedbHzzYOawMoEMYeDiFICJODgxMhzqv3Xxa94pZZWyVq7rIr POWKzqUGd8kyYYWdb1YuNNl30M/yzVLi6z+fFSI/OqxrfZe/+9eftmSWKD/dnPZ6snxN6T7uABAA== X-Developer-Key: i=maxime@cerno.tech; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D X-Spam-Status: No, score=0.2 required=5.0 tests=DATE_IN_PAST_03_06,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,SPF_HELO_PASS, SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762253526103907131?= X-GMAIL-MSGID: =?utf-8?q?1762253526103907131?= The TI J721e Wiz clock implements a mux with a set_parent hook, but doesn't provide a determine_rate implementation. This is a bit odd, since set_parent() is there to, as its name implies, change the parent of a clock. However, the most likely candidate to trigger that parent change is a call to clk_set_rate(), with determine_rate() figuring out which parent is the best suited for a given rate. The other trigger would be a call to clk_set_parent(), but it's far less used, and it doesn't look like there's any obvious user for that clock. So, the set_parent hook is effectively unused, possibly because of an oversight. However, it could also be an explicit decision by the original author to avoid any reparenting but through an explicit call to clk_set_parent(). The latter case would be equivalent to setting the flag CLK_SET_RATE_NO_REPARENT, together with setting our determine_rate hook to __clk_mux_determine_rate(). Indeed, if no determine_rate implementation is provided, clk_round_rate() (through clk_core_round_rate_nolock()) will call itself on the parent if CLK_SET_RATE_PARENT is set, and will not change the clock rate otherwise. __clk_mux_determine_rate() has the exact same behavior when CLK_SET_RATE_NO_REPARENT is set. And if it was an oversight, then we are at least explicit about our behavior now and it can be further refined down the line. Since the CLK_SET_RATE_NO_REPARENT flag was already set though, it seems unlikely. Signed-off-by: Maxime Ripard --- drivers/phy/ti/phy-j721e-wiz.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c index d2fd2143450a..d97f161dfe0c 100644 --- a/drivers/phy/ti/phy-j721e-wiz.c +++ b/drivers/phy/ti/phy-j721e-wiz.c @@ -802,6 +802,7 @@ static int wiz_clk_mux_set_parent(struct clk_hw *hw, u8 index) } static const struct clk_ops wiz_clk_mux_ops = { + .determine_rate = __clk_mux_determine_rate, .set_parent = wiz_clk_mux_set_parent, .get_parent = wiz_clk_mux_get_parent, };