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Thu, 29 Jul 2021 09:07:52 +0000 Subject: Re: [PATCH 2/2] arm64: dts: rockchip: rk3568-evb1-v10: add ethernet support To: Andrew Lunn , Peter Geis Cc: devicetree@vger.kernel.org, arm-mail-list , "open list:ARM/Rockchip SoC..." , Linux Kernel Mailing List , Rob Herring , Heiko Stuebner , Liang Chen , Simon Xue References: <20210728161020.3905-1-michael.riesch@wolfvision.net> <20210728161020.3905-3-michael.riesch@wolfvision.net> From: Michael Riesch Organization: WolfVision GmbH Message-ID: Date: Thu, 29 Jul 2021 11:07:50 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 In-Reply-To: Content-Language: en-US X-ClientProxiedBy: AM6PR08CA0026.eurprd08.prod.outlook.com (2603:10a6:20b:c0::14) To DBBPR08MB4523.eurprd08.prod.outlook.com (2603:10a6:10:c8::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.100.125] (91.118.163.37) by AM6PR08CA0026.eurprd08.prod.outlook.com (2603:10a6:20b:c0::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4373.18 via Frontend Transport; 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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 Hello Andrew, Peter, On 7/28/21 10:37 PM, Andrew Lunn wrote: >> Generally all rockchip boards use this value instead of the rgmii_id, >> I imagine because it's more consistent to tune here than the hit or >> miss support of the phy drivers. > > Most PHY drivers actually implement it correctly, since by default, > most systems get the PHY to do the delays. > > But if most Rockchip boards do it this way, there is a lot to be said > for consistence, so this is fine by me. I have tested a dts without the delays and with phy-mode = "rgmii-id" and it seems to work just fine. Although consistency with other Rockchip boards is something one should consider, I think I'll go along the "rgmii-id" path since this seems to be a more general convention. Thanks for your comments, I'll submit a v2. Regards, Michael _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel