From patchwork Thu Mar 5 16:04:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Belloni X-Patchwork-Id: 11422279 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C2F97138D for ; Thu, 5 Mar 2020 16:06:06 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A054220848 for ; Thu, 5 Mar 2020 16:06:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="XTOOt883"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="btYxyMTJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A054220848 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2+2M7iFiHzfEfy9uQiCJM+or5gEjo+ze39zFShxjBJw=; b=XTOOt8838iU6a5 77fyZN+RF17mMANYTbDJ1FE/US/RD7veLZXtG0GnYnSlgRhqY/NtdT3mdbVtqDxrISneFkNDjgPwG BSmJzvhD7I0NqOkHoxelHk7LQEyyscFnvINYrko+TLwofi7rBSLCMsTkvzI39f/kg+PS6JmG8Pj7N 7Y71TpmoklZetwTCxoL4e0VPnVrZc9ouN0YYAo9OyyLlF9+K+HcGWSh67eYOmyB8cDcX1uQ64yB5v qrItr65k+7dyTsFgyYyMdG3hkXySORc4Ej/GCyMCnw21v4ytXErCT3QNDqDM7iNreu6KMtCXTVZOc sTNbwdLVGifblcZZEZtA==; 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Received: from relay10.mail.gandi.net ([217.70.178.230]) by casper.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j9t0Z-000208-5g for linux-arm-kernel@lists.infradead.org; Thu, 05 Mar 2020 16:06:01 +0000 Received: from localhost (lfbn-lyo-1-16-97.w86-202.abo.wanadoo.fr [86.202.111.97]) (Authenticated sender: alexandre.belloni@bootlin.com) by relay10.mail.gandi.net (Postfix) with ESMTPSA id E37DE240005; Thu, 5 Mar 2020 16:05:03 +0000 (UTC) From: Alexandre Belloni To: Alessandro Zummo , Alexandre Belloni , Barry Song Subject: [PATCH 2/3] rtc: sirfsoc: set range Date: Thu, 5 Mar 2020 17:04:51 +0100 Message-Id: <20200305160452.27808-2-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200305160452.27808-1-alexandre.belloni@bootlin.com> References: <20200305160452.27808-1-alexandre.belloni@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200305_160559_359527_71FA17DB X-CRM114-Status: GOOD ( 10.81 ) X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.4.3 on casper.infradead.org summary: Content analysis details: (-2.6 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [217.70.178.230 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-rtc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This RTC is a 32bit counter running at 16Hz. This overflows every eight years and a half. However, the driver uses the SW_VALUE register to store the overflow, extending the counter to 64bit as long as the update happens before the overflow. Signed-off-by: Alexandre Belloni --- drivers/rtc/rtc-sirfsoc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/rtc/rtc-sirfsoc.c b/drivers/rtc/rtc-sirfsoc.c index b2e72597eee8..8b3c88fb9793 100644 --- a/drivers/rtc/rtc-sirfsoc.c +++ b/drivers/rtc/rtc-sirfsoc.c @@ -346,6 +346,7 @@ static int sirfsoc_rtc_probe(struct platform_device *pdev) return PTR_ERR(rtcdrv->rtc); rtcdrv->rtc->ops = &sirfsoc_rtc_ops; + rtcdrv->rtc->range_max = (1ULL << 60) - 1; rtcdrv->irq = platform_get_irq(pdev, 0); err = devm_request_irq(&pdev->dev, rtcdrv->irq, sirfsoc_rtc_irq_handler,