From patchwork Fri Jan 15 20:19:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adam Ford X-Patchwork-Id: 12024089 X-Patchwork-Delegate: kuba@kernel.org 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 9FBF5C43381 for ; Fri, 15 Jan 2021 20:21:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B53F23A75 for ; Fri, 15 Jan 2021 20:21:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388678AbhAOUU4 (ORCPT ); Fri, 15 Jan 2021 15:20:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388588AbhAOUUw (ORCPT ); Fri, 15 Jan 2021 15:20:52 -0500 Received: from mail-io1-xd2d.google.com (mail-io1-xd2d.google.com [IPv6:2607:f8b0:4864:20::d2d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A8AEC0613D3; Fri, 15 Jan 2021 12:20:12 -0800 (PST) Received: by mail-io1-xd2d.google.com with SMTP id d81so5430378iof.3; Fri, 15 Jan 2021 12:20:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3XzHspCX9O1x943fOc9JVbEHt7+srRIHgKjIIe0gcTw=; b=NgWS5kVabAPxdHhBiKkubPCMxZN3NZ2xmbF8XalcBWU3OrQ3/tV+zpDt/IDcz+5IkC U3+38yv5icRvZyOmDELIfUuDz2bazw0ZDq+9azXPkIlqimmDJ+H7dLk1zGUcuZbzXw7J 7/95a4q72b7v/RTX2DePIsNQIaentHQ63Vey+hFENcrAIMRia9po4SjMbhemuvPSPOJv CxemdbgEYCzsYDesOub6heMvvjV3px1PPvTCbyYATyauWYmJqjOCdu8YRwROtwKtrJNL 8k41j0IB2qf8fy1A9fyrs/RWrWql4NwyH5z++D5WY0hFQ+cR2fydYUxMVl/rU09uZOB7 p/kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3XzHspCX9O1x943fOc9JVbEHt7+srRIHgKjIIe0gcTw=; b=Kid3kpYDTx3X69+CKIo+YJrDwH3JzquXxCYhgzVrwsMzsFf4ZJpRXM3mRoU794YyQN oEXxFLZMIdVICVLzd2ICYXXV5GcU4Yu9/oQKgHbVOFWcdQB4YPaIr8bI5rV9Sy6dD4U0 h9uOe4lYRwgi23BxWRjrh1G99S5KzZ/BCJoE9k6VESVuBD2uWZbEHNoZIdV+mDOhcXbM 8gnhs+PKT/Q9RR641ksu3Qw4DZbjEtpI1+Rf30VonbKIx9NZd7jbFdHdzU4vWczbqjWr A5tbWju8c25W2jMyN180fMlxRKRmLTov7zax4pObaNhzCL2hKW3MPHJBhvrOAnAzN3G5 dLHw== X-Gm-Message-State: AOAM530JvDvNi+QkjMK9eqKAT+onVGDnOdUHPjrtEvimdtK3JNrpTeAm dEaWCJ5WW3eGODsxz12HVBOWEwvLAk3LuPC7 X-Google-Smtp-Source: ABdhPJwKEbWqA8LJEeHIYAOPbhOtSAIGSkE20xlarQKNl+/RedBLvYsuTNRj6JxcFkzNL6Pch4Hy6w== X-Received: by 2002:a6b:6f09:: with SMTP id k9mr9923958ioc.30.1610742011324; Fri, 15 Jan 2021 12:20:11 -0800 (PST) Received: from aford-IdeaCentre-A730.lan ([2601:448:8400:9e8:475c:c79e:a431:bccb]) by smtp.gmail.com with ESMTPSA id e28sm4194900iov.38.2021.01.15.12.20.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Jan 2021 12:20:10 -0800 (PST) From: Adam Ford To: linux-renesas-soc@vger.kernel.org Cc: aford@beaconembedded.com, Adam Ford , Sergei Shtylyov , "David S. Miller" , Jakub Kicinski , Rob Herring , Geert Uytterhoeven , Magnus Damm , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V2 4/4] net: ethernet: ravb: Enable optional refclk Date: Fri, 15 Jan 2021 14:19:51 -0600 Message-Id: <20210115201953.443710-4-aford173@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210115201953.443710-1-aford173@gmail.com> References: <20210115201953.443710-1-aford173@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org For devices that use a programmable clock for the avb reference clock, the driver may need to enable them. Add code to find the optional clock and enable it when available. Signed-off-by: Adam Ford --- drivers/net/ethernet/renesas/ravb.h | 1 + drivers/net/ethernet/renesas/ravb_main.c | 8 ++++++++ 2 files changed, 9 insertions(+) V2: The previous patch to fetch the fclk was dropped. In its place is code to enable the refclk diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index 7453b17a37a2..ff363797bd2b 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -994,6 +994,7 @@ struct ravb_private { struct platform_device *pdev; void __iomem *addr; struct clk *clk; + struct clk *refclk; struct mdiobb_ctrl mdiobb; u32 num_rx_ring[NUM_RX_QUEUE]; u32 num_tx_ring[NUM_TX_QUEUE]; diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index bd30505fbc57..739e30f45daa 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2148,6 +2148,14 @@ static int ravb_probe(struct platform_device *pdev) goto out_release; } + priv->refclk = devm_clk_get_optional(&pdev->dev, "refclk"); + if (IS_ERR(priv->refclk)) { + error = PTR_ERR(priv->refclk); + goto out_release; + } else { + (void)clk_prepare_enable(priv->refclk); + } + ndev->max_mtu = 2048 - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN); ndev->min_mtu = ETH_MIN_MTU;