From patchwork Sun Oct 29 04:27:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Ciocaltea X-Patchwork-Id: 13439687 X-Patchwork-Delegate: mail@conchuod.ie 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 6CDFCC4167B for ; Sun, 29 Oct 2023 04:29:08 +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:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=xcIAsglPMNOU16cjGpieSkyh+5zhhy99CVnfIM0Fbrk=; b=WwM3yQhrFlk6KT LZq9SvnFXeZnZU9gdMBPJaWU44hzCnc9bt6L1FIfOSVWH/EIWw5XUQdT+OSGmfx/RQvwE6BLzkkJc xCtalGyDbT0tDt5nII/lyvoZ+0yDn++bkyAjCEi3aEDi8ulIxTGa5x+WnEjVg93JZmYjhAU7cYmeM nQyJYF+zP50IO5ptchMshjmN7B41FheTYU61Xu1l/CkU0hE3cQvwJEp2Ilfw68iqZKVrwNq6A+vRw KaULLJdmviaZZWy3ljBDglv5d8iHrX6LevWE1QgcDEagH+E0SXpI7LE6Id4YnPTYYO9xWPpWtj+up onvYylvI4qeeYREe+tKg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qwxQ8-001A2Z-1p; Sun, 29 Oct 2023 04:29:04 +0000 Received: from madras.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e5ab]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qwxP0-00199Q-1N; Sun, 29 Oct 2023 04:27:55 +0000 Received: from localhost (unknown [188.24.143.101]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by madras.collabora.co.uk (Postfix) with ESMTPSA id 21E036607340; Sun, 29 Oct 2023 04:27:53 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1698553673; bh=AC+Ls3ytNnSvtsq4GFfS8dc+BFMLEfoCVREKO8KW7lU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RBPXQz2GQGNqffqr51uwLxSOhlWrlkDw3YEFs3NbSf/nxgGJOX1fcRb6/DIhxT13w gNjyWhoEGy6ckmKdXx87Nqn6KdlEUhVgboS5Gy40r6ymqy5eYtuWeajVDgkqWHVOJg I9Eq0d8Wil0pk8/ZKzljUpTNKrufiMAVWlMujcY4jig24W4WVWezOr+TOm0ymEetan +wqbErUZw9mkSdnV7eMBlLLnQohAi+RhCwneJRwQUHnmc2A1YWDiyDF/Dz2EApxyW0 gE2lcXa3TgbG+ktNl+mvhxtR5uG5p7bAN6zMkjQ4hj6Sc9sw7PqWb6bzfFLk0r7nza Our6kpSl5wJ0Q== From: Cristian Ciocaltea To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Emil Renner Berthing , Samin Guo , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Richard Cochran , Giuseppe Cavallaro Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, kernel@collabora.com Subject: [PATCH v2 11/12] riscv: dts: starfive: visionfive-v1: Enable gmac and setup phy Date: Sun, 29 Oct 2023 06:27:11 +0200 Message-ID: <20231029042712.520010-12-cristian.ciocaltea@collabora.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231029042712.520010-1-cristian.ciocaltea@collabora.com> References: <20231029042712.520010-1-cristian.ciocaltea@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231028_212754_594560_612CB365 X-CRM114-Status: UNSURE ( 9.59 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org The StarFive VisionFive V1 SBC has a Motorcomm YT8521 PHY supporting RGMII-ID, but requires manual adjustment of the RX internal delay to work properly. The default RX delay provided by the driver is 1.95 ns, which proves to be too high. Applying a 50% reduction seems to mitigate the issue. Signed-off-by: Cristian Ciocaltea --- .../starfive/jh7100-starfive-visionfive-v1.dts | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/riscv/boot/dts/starfive/jh7100-starfive-visionfive-v1.dts b/arch/riscv/boot/dts/starfive/jh7100-starfive-visionfive-v1.dts index e82af72f1aaf..e043a27f7612 100644 --- a/arch/riscv/boot/dts/starfive/jh7100-starfive-visionfive-v1.dts +++ b/arch/riscv/boot/dts/starfive/jh7100-starfive-visionfive-v1.dts @@ -18,3 +18,20 @@ gpio-restart { priority = <224>; }; }; + +&gmac { + phy-handle = <&phy>; + phy-mode = "rgmii-id"; + status = "okay"; + + mdio { + #address-cells = <1>; + #size-cells = <0>; + compatible = "snps,dwmac-mdio"; + + phy: ethernet-phy@0 { + reg = <0>; + rx-internal-delay-ps = <900>; + }; + }; +};