From patchwork Wed Mar 24 10:35:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marek_Beh=C3=BAn?= X-Patchwork-Id: 408664 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=-14.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, 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 5A93BC433E5 for ; Wed, 24 Mar 2021 10:37:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1159661A0C for ; Wed, 24 Mar 2021 10:37:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235845AbhCXKg5 (ORCPT ); Wed, 24 Mar 2021 06:36:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:32842 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233240AbhCXKgb (ORCPT ); Wed, 24 Mar 2021 06:36:31 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 173E061A01; Wed, 24 Mar 2021 10:36:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1616582190; bh=K+wu1moqnyaaWnMlMm2Hi99elaBkWYpg6o00k7xiPBY=; h=From:To:Cc:Subject:Date:From; b=mCjAt6l8xkj+gzbE1PMT0seb76QmBsvopd0YBzHrShOi//z4bLeDAlXjN1dPZNqLL 2M3ZYsVkiVTvvkNhBr1D54jtig9FIhBS4Dd2aOXLiDSGwAquK4MA9j75GFKN3QgjMG x9A+hXsPXU4S/jQHNqUhD9RAFwvRX6oJZJKttmOT2V9+3mdwRBjp77HNmnw1Qn3S37 P44lQBUrattI9ec3Yh3JYGKHrtg2n7SJUrvYG40L62NVYqCOZqXIuMuqUD6qI6kR1D DWIvO/4k6SCnZe2c6RqvmFOGQ5efbz86gjCcFyAd6z+sex1p4kOfPetWsPYXwBobvB +klDJpYS35bWg== From: =?utf-8?q?Marek_Beh=C3=BAn?= To: netdev@vger.kernel.org, Andrew Lunn , "David S . Miller" , Florian Fainelli , Heiner Kallweit , Russell King , Rob Herring , devicetree@vger.kernel.org Cc: pali@kernel.org, =?utf-8?q?Marek_Beh=C3=BAn?= Subject: [PATCH net-next 0/2] dt-bindings: define property describing supported ethernet PHY modes Date: Wed, 24 Mar 2021 11:35:54 +0100 Message-Id: <20210324103556.11338-1-kabel@kernel.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, the Marvell Alaska PHYs (88X3310, 88E2110) can, depending on their configuration, change the PHY mode to the MAC, depending on the copper/fiber speed. The 88X3310, for example, can be configured (via MACTYPE register) so that it communicates with the MAC in sgmii for 10/100/1000mbps, 2500base-x for 2500mbps, 5gbase-r for 5gbps and either 10gbase-r, xaui or rxaui for 10gbps. Or the PHY may communicate with the MAC in usxgmii, or one of the 10gbase-r, rxaui or xaui modes with rate matching. So for the 10gbps mode we have options 10gbase-r, xaui, rxaui and usxgmii. The MAC can support some of these modes, and if it does more than one, we need to know which one to use. Not all of these modes must necessarily be supported by the board (xaui required wiring for 4 SerDes lanes, for example, and 10gbase-r requires wiring capable of transmitting at 10.3125 GBd). The MACTYPE is upon HW reset configured by strapping pins - so the board should have a correct mode configured after HW reset. One problem with this is that some boards configure the MACTYPE to a rate matching mode, which, according to the errata, is broken in some situations (it does not work for 10/100/1000, for example). Another problem is that if lower modes are supported, we should maybe use them in order to save power. But for this we need to know which phy-modes are supported on the board. This series adds documentation for a new ethernet PHY property, called `supported-mac-connection-types`. When this property is present for a PHY node, only the phy-modes listed in this property should be considered to be functional on the board. The second patch adds binding for this property. The first patch does some YAML magic in ethernet-controller.yaml in order to be able to reuse the PHY modes enum, so that the same list does not have to be defined twice. Marek Marek Behún (2): dt-bindings: ethernet-controller: create a type for PHY interface modes dt-bindings: ethernet-phy: define `supported-mac-connection-types` property .../bindings/net/ethernet-controller.yaml | 89 ++++++++++--------- .../devicetree/bindings/net/ethernet-phy.yaml | 18 ++++ 2 files changed, 66 insertions(+), 41 deletions(-)