From patchwork Fri May 13 11:03:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 572287 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 CC8C1C433EF for ; Fri, 13 May 2022 11:03:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1379706AbiEMLDk (ORCPT ); Fri, 13 May 2022 07:03:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44666 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1379691AbiEMLDe (ORCPT ); Fri, 13 May 2022 07:03:34 -0400 Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::227]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1BB22A28C1; Fri, 13 May 2022 04:03:31 -0700 (PDT) Received: (Authenticated sender: miquel.raynal@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id D2CE920009; Fri, 13 May 2022 11:03:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1652439809; 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=c1EFbc9LMraNajakBircBlojutJVKorAQPiqxHB6qVw=; b=NJeSiL5aRAYVzCPjCFbvPP1mxFOEGD0PHnU/+HMdijTT8c/rec8DU5ef64W/2eOlFwPCyx EgDzvhaRtgb+d32aH+DTd365B4O5bZaAsAacobi09Xg9yTpfVYfYaMJ/HWNFkjmKG+NXvD eFzeSJoozVjqICoJil0DN477lz9fIIg0HinEfI5OSJtXpYw49w05gVMo5A+jTedUQhFf0S H3OgDi0ZLpURIYnLLQ6QZ6RvhZGRuuFWp+RRndTbsuX4NUrabgI9iRwAsnm/n+Gz47fUH0 X1PSR7YQg5sDrZGLE+wGVv5r6S2w+h4Ubo5eMiBPE+3trz4arPrEOfpjQyDqSw== 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 v6 0/5] RZ/N1 RTC support Date: Fri, 13 May 2022 13:03:22 +0200 Message-Id: <20220513110327.261652-1-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@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 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 | 422 ++++++++++++++++++ 5 files changed, 508 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/renesas,rzn1-rtc.yaml create mode 100644 drivers/rtc/rtc-rzn1.c