From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 089E4C43A1D for ; Thu, 12 Jul 2018 03:50:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B30AF205C9 for ; Thu, 12 Jul 2018 03:50:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B30AF205C9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.crashing.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726762AbeGLD6K (ORCPT ); Wed, 11 Jul 2018 23:58:10 -0400 Received: from gate.crashing.org ([63.228.1.57]:59053 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726492AbeGLD4o (ORCPT ); Wed, 11 Jul 2018 23:56:44 -0400 Received: from pasglop.ozlabs.ibm.com (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.14.1) with ESMTP id w6C3mnNS020207; Wed, 11 Jul 2018 22:48:50 -0500 From: Benjamin Herrenschmidt To: linux-aspeed@lists.ozlabs.org Cc: devicetree@vger.kernel.org, OpenBMC Maillist , Andrew Jeffery , Joel Stanley , Rob Herring , linux-kernel@vger.kernel.org Subject: [PATCH 0/5] fsi: Coldfire coprocessor offload Date: Thu, 12 Jul 2018 13:48:42 +1000 Message-Id: <20180712034847.12878-1-benh@kernel.crashing.org> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series implements support for offloading the FSI protocol bitbanging to the ColdFire secondary core of the Aspeed SoCs. The result increases FSI performance by a factor of 4, and on systems that don't support async FSI clock, provide much more regular and continuous clocking which helps reliability. This series is much smaller than the previous submissions as I already merged all the "preparatory" work into the FSI tree. This is now strictly the coldfire support and is now only waiting for ack of the DT bindings (and whatever other review comments might come my way) before I put it into the FSI tree and sends it to Greg. There are two dependencies to be able to build/use this. The above prep work: https://git.kernel.org/pub/scm/linux/kernel/git/benh/linux-fsi.git/log/ And the Aspeed GPIO driver changes for handling with GPIO lines ownership and handshaking. The patches have been merged into the GPIO tree and a dedicated immutable topic branch and can be found here: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git/log/?h=ib-aspeed Finally, the driver needs a machine specific firmware file. The firwmare is open source and available at: https://github.com/ozbenh/cf-fsi I will submit it to linux-firmware if there's enough popular demand ;-) v2. Fix misuse of devm_kzalloc for objects containing a struct device in fsi-master-gpio and fsi-master-ast-cf (similar fixes for the various FSI drivers will come later a part of rework to move away from misc devs). v3. Sparse fix and updated DT bindings as per Rob's comments.