From patchwork Fri Jan 1 13:24:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bert Vermeulen X-Patchwork-Id: 11994653 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, 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 22AC9C433DB for ; Fri, 1 Jan 2021 13:25:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E598B22228 for ; Fri, 1 Jan 2021 13:25:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727038AbhAANZe (ORCPT ); Fri, 1 Jan 2021 08:25:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726957AbhAANZe (ORCPT ); Fri, 1 Jan 2021 08:25:34 -0500 Received: from yawp.biot.com (yawp.biot.com [IPv6:2a01:4f8:10a:8e::fce2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 45F44C061575 for ; Fri, 1 Jan 2021 05:24:54 -0800 (PST) Received: from debian-spamd by yawp.biot.com with sa-checked (Exim 4.93) (envelope-from ) id 1kvKQG-00B66A-Bz for linux-spi@vger.kernel.org; Fri, 01 Jan 2021 14:24:52 +0100 Received: from [2a02:578:460c:1:ae1f:6bff:fed1:9ca8] (helo=sumner.biot.com) by yawp.biot.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1kvKQ5-00B64X-Pj; Fri, 01 Jan 2021 14:24:41 +0100 Received: from bert by sumner.biot.com with local (Exim 4.93) (envelope-from ) id 1kvKQ5-00Bggr-BL; Fri, 01 Jan 2021 14:24:41 +0100 From: Bert Vermeulen To: Mark Brown , Rob Herring , Birger Koblitz , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Bert Vermeulen Subject: [PATCH v3 0/2] spi: Add support for Realtek RTL838x/RTL839x SoC SPI Date: Fri, 1 Jan 2021 14:24:30 +0100 Message-Id: <20210101132432.2785663-1-bert@biot.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org v3: - Added cpu_relax() to busy loop. - Dropped .remove callback from driver struct. - Use (variations of) realtek-rtl as prefix. - Dropped Kconfig entry, and use MACH_REALTEK_RTL setting to build the driver, since there's no point booting without the SPI-connected flash. v2: - Rewrote from spi-nor driver to regular spi driver, implementing only set_cs() and transfer_one(). (Thanks Chuanhong Guo!) Bert Vermeulen (2): dt-bindings: spi: Realtek RTL838x/RTL839x SPI controller spi: realtek-rtl: Add support for Realtek RTL838x/RTL839x SoC SPI controllers .../bindings/spi/realtek,rtl-spi.yaml | 36 +++ MAINTAINERS | 6 + drivers/spi/Makefile | 1 + drivers/spi/spi-realtek-rtl.c | 205 ++++++++++++++++++ 4 files changed, 248 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/realtek,rtl-spi.yaml create mode 100644 drivers/spi/spi-realtek-rtl.c