From patchwork Fri Apr 17 22:17:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Priit Laes X-Patchwork-Id: 201824 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=-2.5 required=3.0 tests=DKIM_ADSP_ALL, DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no 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 956B9C2BB1D for ; Fri, 17 Apr 2020 22:28:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 67847214D8 for ; Fri, 17 Apr 2020 22:28:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=plaes.org header.i=@plaes.org header.b="VMv0txaD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728676AbgDQW2q (ORCPT ); Fri, 17 Apr 2020 18:28:46 -0400 Received: from plaes.org ([188.166.43.21]:57482 "EHLO plaes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728496AbgDQW2p (ORCPT ); Fri, 17 Apr 2020 18:28:45 -0400 Received: from localhost (unknown [IPv6:2001:1530:1000:9d4d:940e:6b9e:3deb:4]) by plaes.org (Postfix) with ESMTPSA id E48EC404A6; Fri, 17 Apr 2020 22:17:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=plaes.org; s=mail; t=1587161871; bh=Et23DSQX+mYnPBoOaUK80Omdf6ErKOl84UqRoFglySE=; h=From:To:Cc:Subject:Date:From; b=VMv0txaDabnlDJtPEbe/qgBuhJXoBNCTYURXJYKEtGgcXzNxYwh0grJ/5uFNtWlDM Wmq4RGo2277lZ8nYq0Wlpb6ZWXL3Tmzi8knUm0ZwTrfZ+qXoKFqfHd01BnRnJbp9FL T130y4RuP7JUG0iqzwAzV6zhPmpzQW8805DTsNotayGIPj0e4B23jvu3Ex0lr+kIQ7 SbEByUN4KXl9uhr+J+cGZcwjJzxdKCes1lvw9e5LQ9Pe998QxoPJABh6m2suAczpH3 3ZgXqE9XkS8zINO1S4yPEUQcv7lPYixHVqJ/dE79tdgchxo6+jsUY8zNWU1ZIjFTaJ PSSF1sajUKRAg== From: Priit Laes To: Maxime Ripard , Chen-Yu Tsai , Rob Herring , linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-sunxi@googlegroups.com Cc: Priit Laes Subject: [PATCH 0/4] ARM: sun7i: Convert A20 GMAC driver to CCU Date: Sat, 18 Apr 2020 01:17:26 +0300 Message-Id: <20200417221730.555954-1-plaes@plaes.org> X-Mailer: git-send-email 2.25.2 MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This serie converts Allwinner A20 (sun7i) GMAC driver to CCU while still retaining compatibility with existing devicetrees. First two patches contain preliminary work which convert sun4i/sun7i clock drivers to platform devices and creates regmap to access gmac register from the sun7i gmac driver. Third patch implements syscon-based regmap to allow driver manage its own clock source. Fourth patch updates the devicetree and drops the unused clocks. While testing the driver I noticed following bugs with the existing sun7i gmac driver: - driver relies on u-boot for initialization (fixed in this implementation) - `systemctl restart networking` fails to bring the link up again. Priit Laes (4): clk: sunxi-ng: a10/a20: rewrite init code to a platform driver clk: sunxi-ng: a20: export a regmap to access the GMAC register net: stmmac: dwmac-sunxi: Implement syscon-based clock handling ARM: dts: sun7i: Use syscon-based implementation for gmac arch/arm/boot/dts/sun7i-a20.dtsi | 36 +---- drivers/clk/sunxi-ng/ccu-sun4i-a10.c | 108 ++++++++++++--- .../net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 124 ++++++++++++++++-- 3 files changed, 206 insertions(+), 62 deletions(-)