From patchwork Fri Jun 2 18:26:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Detlev Casanova X-Patchwork-Id: 688364 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27E6DC7EE2A for ; Fri, 2 Jun 2023 18:27:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236644AbjFBS1M (ORCPT ); Fri, 2 Jun 2023 14:27:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41742 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236128AbjFBS1L (ORCPT ); Fri, 2 Jun 2023 14:27:11 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0ED1018C; Fri, 2 Jun 2023 11:27:10 -0700 (PDT) Received: from arisu.hitronhub.home (unknown [23.233.251.139]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: detlev) by madras.collabora.co.uk (Postfix) with ESMTPSA id 442146606ED9; Fri, 2 Jun 2023 19:27:07 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1685730428; bh=Bhe0llT4DF8ZqHEPdTT4fQ2FZEjkEvA9p05FaGSuRXs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=O6YWzhwuoHa0va1FR4AvEuwCw7FFiMWU9MoNvKXcKDqu80zNoLdWl3i8xSDl0Vf4S 0B3K8Ccml1Ures4OmFJA+w70k88KLkaRG3ZNlXpxezTY+AHzOzWhyIYkIDZDSA6h8u 0molKGU8pboV1HaXp2jME9vmrJ2EG2ySAoqlaTGDNVRSDJVZ9jLadn1Ot2mYm5Sz1g nV94/UlyPf9Nx2lxU1o54WQTAKn/MCCviN3jarDSbd8he4PHUTT038Vwwh3iwAA7nV /mJWENaNJScN+jc9+ZVUOBjXrmEqNvyMDbcGrDa9uS1hK3vlSfa/2nPGT0Rd1OWoo6 jlHL3lQ2Gi2Tw== From: Detlev Casanova To: linux-kernel@vger.kernel.org Cc: Andrew Lunn , Heiner Kallweit , Russell King , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , netdev@vger.kernel.org, devicetree@vger.kernel.org, Detlev Casanova Subject: [PATCH v2 1/3] net: phy: realtek: Add optional external PHY clock Date: Fri, 2 Jun 2023 14:26:57 -0400 Message-Id: <20230602182659.307876-2-detlev.casanova@collabora.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20230602182659.307876-1-detlev.casanova@collabora.com> References: <20230602182659.307876-1-detlev.casanova@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org In some cases, the PHY can use an external clock source instead of a crystal. Add an optional clock in the phy node to make sure that the clock source is enabled, if specified, before probing. Signed-off-by: Detlev Casanova Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli --- drivers/net/phy/realtek.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index 3d99fd6664d7..b13dd0b3c99e 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -12,6 +12,7 @@ #include #include #include +#include #define RTL821x_PHYSR 0x11 #define RTL821x_PHYSR_DUPLEX BIT(13) @@ -80,6 +81,7 @@ struct rtl821x_priv { u16 phycr1; u16 phycr2; bool has_phycr2; + struct clk *clk; }; static int rtl821x_read_page(struct phy_device *phydev) @@ -103,6 +105,11 @@ static int rtl821x_probe(struct phy_device *phydev) if (!priv) return -ENOMEM; + priv->clk = devm_clk_get_optional_enabled(dev, NULL); + if (IS_ERR(priv->clk)) + return dev_err_probe(dev, PTR_ERR(priv->clk), + "failed to get phy clock\n"); + ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR1); if (ret < 0) return ret;