From patchwork Fri Jul 2 06:54:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: WANG Xuerui X-Patchwork-Id: 12355577 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=-11.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 C4F65C11F68 for ; Fri, 2 Jul 2021 06:55:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AC9E461156 for ; Fri, 2 Jul 2021 06:55:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230018AbhGBG5k (ORCPT ); Fri, 2 Jul 2021 02:57:40 -0400 Received: from [115.28.160.31] ([115.28.160.31]:41716 "EHLO mailbox.box.xen0n.name" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S230177AbhGBG5h (ORCPT ); Fri, 2 Jul 2021 02:57:37 -0400 Received: from ld50.lan (unknown [101.224.80.218]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by mailbox.box.xen0n.name (Postfix) with ESMTPSA id BE9A760105; Fri, 2 Jul 2021 14:55:01 +0800 (CST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=xen0n.name; s=mail; t=1625208901; bh=8ef0sNiNdWr1zsdqyvom2aHGjqFBvVkkpTBEzmSJGXk=; h=From:To:Cc:Subject:Date:From; b=Ubzw4JVSmEn7K33xj9e+4xFlmw5zLRYayBt2MDU7qTz1KWeQAZBfBQ+0Edxhut2jQ XF0sAwMs9+3cj3vlYgyBCU71q2CzaVu9qyOVkzBZLsJmqi2t9MiM5S+Ht1TkoBqvgI HIg/QkZRyIqeNvAOHp+I7xYxgkjwwsY7cVnCrB/M= From: WANG Xuerui To: linux-rtc@vger.kernel.org Cc: WANG Xuerui , linux-mips@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v5 0/6] rtc: ls2x: Add support for the Loongson-2K/LS7A RTC Date: Fri, 2 Jul 2021 14:54:45 +0800 Message-Id: <20210702065451.1175356-1-git@xen0n.name> X-Mailer: git-send-email 2.30.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org This patch series adds support for the RTC module found on various Loongson systems with the Loongson-2K SoC or the LS7A bridge chip. The driver is rewritten from an out-of-tree version to meet mainline standards. I write kernel code as a hobby, though, so there might still be overlooked issues. Any suggestions are welcome. This series is based on next-20210628, but should apply cleanly on rtc-next too. v5: - Minor changes per Nobuhiro-san's review - Simplified one register-write-and-return - Explicitly depend on OF, remove of_match_ptr usage for now - Tested on Loongson-3A4000; 2K should work too because there's no functional change either v4: - Rebased on top of next-20210628 - Added Jiaxun's Tested-by tag for Loongson-2K; no functional changes - Addressed all review comments from v3 - Rewritten field operations with FIELD_GET/FIELD_PREP - Removed all error logs - Removed unnecessary spinlocking (RTC core already protects against concurrent device file operations) v3: - Fixed compile error not discovered after rebase (blame sleep deprivation) - Tested on Loongson-3A4000 and Loongson-2K v2: - Rebased on top of latest linux-next - Updated Huacai's e-mail address to the kernel.org one - Added collected tags - Added adaptation for newly upstreamed Loongson-2K platforms WANG Xuerui (6): rtc: ls2x: Add support for the Loongson-2K/LS7A RTC dt-bindings: rtc: Add bindings for LS2X RTC MIPS: Loongson64: DTS: Add RTC support to LS7A MIPS: Loongson: Enable LS2X RTC in loongson3_defconfig MIPS: Loongson64: DTS: Add RTC support to Loongson-2K MIPS: Loongson: Enable LS2X RTC in loongson2k_defconfig .../devicetree/bindings/rtc/trivial-rtc.yaml | 2 + .../boot/dts/loongson/loongson64-2k1000.dtsi | 5 + arch/mips/boot/dts/loongson/ls7a-pch.dtsi | 5 + arch/mips/configs/loongson2k_defconfig | 1 + arch/mips/configs/loongson3_defconfig | 1 + drivers/rtc/Kconfig | 11 ++ drivers/rtc/Makefile | 1 + drivers/rtc/rtc-ls2x.c | 180 ++++++++++++++++++ 8 files changed, 206 insertions(+) create mode 100644 drivers/rtc/rtc-ls2x.c base-commit: 3579aa488520feeda433ceca23ef4704bf8cd280