From patchwork Mon May 16 08:24:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 12850389 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94FCBC433FE for ; Mon, 16 May 2022 08:25:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241687AbiEPIZO (ORCPT ); Mon, 16 May 2022 04:25:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40822 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230421AbiEPIZM (ORCPT ); Mon, 16 May 2022 04:25:12 -0400 Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0574036E3C; Mon, 16 May 2022 01:25:09 -0700 (PDT) Received: (Authenticated sender: miquel.raynal@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 80276E000B; Mon, 16 May 2022 08:25:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1652689508; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=DpDCvqDkJ61pIqOdtHGhZAbezDieFUL4myvvlVhBRGc=; b=OvAw6AweI3J0cIiuj3O6+CWsjNJR7mJDmDcrsnu6t/AYS7VRROO+tiE1qZdQqtRWYpMKGa z6s+fT7W/6bFpyN6wyN6FlW5y42eP1YJeQlAnWJo+6n8a3qFzO7PbVc/IGViqydTNFihwi 3A7XZdO0C55iayUjugxRdKXzRRAdQyt9NAfGIc2TOSxhmE+9zLQQhUxF8tfJOMbPZwYdoV 0/h3PSQBtvj9RwEEpvOx+OZyx9V07UPePK4IxnQ0P7umDPoKYkVOBs3YVaUOFqOXRSG11L YafOshGXHVO2lgTTZmVfhzjPaJpS3n1ql8278UHT/+qtKWA2lpeIZVlOV9LKOw== From: Miquel Raynal To: Alessandro Zummo , Alexandre Belloni , Rob Herring , Krzysztof Kozlowski , Geert Uytterhoeven , Magnus Damm Cc: Miquel Raynal , linux-rtc@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, Gareth Williams , Milan Stevanovic , Jimmy Lalande , Pascal Eberhard , Thomas Petazzoni , Herve Codina , Clement Leger Subject: [PATCH v7 0/5] RZ/N1 RTC support Date: Mon, 16 May 2022 10:24:59 +0200 Message-Id: <20220516082504.33913-1-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Hello, This small series adds support for the RZ/N1 RTC. Despite its limitations, I found useful to at least have alarm and offset support. Cheers, Miquèl Changes in v7: * Drop the unused *clk member of the rtc structure and the clk.h header as well now that we use runtime pm. Changes in v6: * Fix a sparse warning by dropping a variable not really used and replaced by a comment. Changes in v5: * Dropped a (now) useless header that could produce a build error. Changes in v4: * Collected more tags (on the DT bindings). * Fixed the name of the SoC in the header: RZ/N1 instead of RZN1. * Dropped the error message when the alarm IRQ is not available (already handled by the core) * Used pm_runtime_put() instead of pm_runtime_put_sync(). * Used pm_runtime_resume_and_get() instead of pm_runtime_get(). * Used devm_pm_runtime_enable() instead of pm_runtime_enable(). Changes in v3: * Collected tags. * s/soc:/clk:/ in the clock commit title. * Dropped the RTC hclk fix which has already been applied. * Added the power-domain properties both in the bindings and in the DT. * Used runtime PM to enable the clock instead of using the clk API directly. Changes in v2: * Fixed the error path in the clk driver, where I missed to release a spin_lock. * Collected tags. * Moved the rtc subnode in the dt to keep the nodes ordered by unit address. * Dropped the useless "oneOf" statement in the bindings (compatible property). * Dropped the start-year property in the bindings (already defined). * Avoided rollover calculations that could be more easily handled (and reviewed) with a time64_t conversion. * Returned ERANGE instead of EOPNOTSUPP when the alarm date is not valid. * Cleared RTC_FEATURE_UPDATE_INTERRUPT to avoid warning from the tools. * Dropped the sysctl patch adding the reset helper, instead fulfilled the description of the RTC clock so that when requesting this clock to be enabled, the idle bit is released. * Avoided rollover calculations that could be more easily handled (and reviewed) with a time64_t conversion. * Fixed the max_range value, after a rtc-range test and looking at other implementations. Michel Pollet (1): rtc: rzn1: Add new RTC driver Miquel Raynal (4): dt-bindings: rtc: rzn1: Describe the RZN1 RTC rtc: rzn1: Add alarm support rtc: rzn1: Add oscillator offset support MAINTAINERS: Add myself as maintainer of the RZN1 RTC driver .../bindings/rtc/renesas,rzn1-rtc.yaml | 70 +++ MAINTAINERS | 8 + drivers/rtc/Kconfig | 7 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-rzn1.c | 420 ++++++++++++++++++ 5 files changed, 506 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/renesas,rzn1-rtc.yaml create mode 100644 drivers/rtc/rtc-rzn1.c