From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 7AD77C43613 for ; Sun, 23 Jun 2019 12:37:20 +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 4828820665 for ; Sun, 23 Jun 2019 12:37:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="aWVgw8SE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4828820665 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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:In-Reply-To: References:List-Owner; bh=j5xjoq6QCuu/53Rh9FkPRWrrr16E+8GwYHw9nNgytyc=; b=aWV gw8SEXXQihKup3mq/LRigTAXR2a0rB5AEIAScmxQJpSDjOw6WzEDn8FtwKgZ5vGRn/8JiGy1Ct7p8 IYcEI7VGgqXYdW6h0DfFYisuT0ex+wWdJlfdzJuJasj45KOlrWUpvV7ssWuvLYMSvSKEQk2I6Ggwy JlGEoW/qF6x5ptjm3V4vMoFVIzUn2x99D7cIB7FoQz8taPDUzpU3aPuXMjq6cAp6el9oMeWLQkIDd YKfnVhXBfytIlsNXeQBSusGIU+geSfWriksT7fzawYo6Lhzvm3C7orNB2pRzZS9s9tAHOSC7h2moh dAsmoF/B7490SLbUt8SdEjuymYscDXQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hf1k6-0007QC-N0; Sun, 23 Jun 2019 12:37:10 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hf1k2-0007P7-Tc for linux-arm-kernel@lists.infradead.org; Sun, 23 Jun 2019 12:37:08 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 1D0242003D1; Sun, 23 Jun 2019 14:37:05 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 2D7CC20012B; Sun, 23 Jun 2019 14:36:56 +0200 (CEST) Received: from mega.ap.freescale.net (mega.ap.freescale.net [10.192.208.232]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 3EA8C4030C; Sun, 23 Jun 2019 20:36:45 +0800 (SGT) From: Anson.Huang@nxp.com To: daniel.lezcano@linaro.org, tglx@linutronix.de, robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, l.stach@pengutronix.de, abel.vesa@nxp.com, ccaione@baylibre.com, angus@akkea.ca, andrew.smirnov@gmail.com, agx@sigxcpu.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH RESEND V2 1/3] clocksource/drivers/sysctr: Add optional clock-frequency property Date: Sun, 23 Jun 2019 20:38:48 +0800 Message-Id: <20190623123850.22584-1-Anson.Huang@nxp.com> X-Mailer: git-send-email 2.17.1 X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190623_053707_095384_EC7D7E77 X-CRM114-Status: UNSURE ( 7.55 ) X-CRM114-Notice: Please train this message. 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-imx@nxp.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Anson Huang Systems which use platform driver model for clock driver require the clock frequency to be supplied via device tree when system counter driver is enabled. This is necessary as in the platform driver model the of_clk operations do not work correctly because system counter driver is initialized in early phase of system boot up, and clock driver using platform driver model is NOT ready at that time, it will cause system counter driver initialization failed. Add the optinal clock-frequency to the device tree bindings of the NXP system counter, so the frequency can be handed in and the of_clk operations can be skipped. Signed-off-by: Anson Huang --- Changes since V1: - improve commit log, no content change. --- Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt b/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt index d576599..c9907a0 100644 --- a/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt +++ b/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt @@ -14,6 +14,11 @@ Required properties: - clocks : Specifies the counter clock. - clock-names: Specifies the clock's name of this module +Optional properties: + +- clock-frequency : Specifies system counter clock frequency and indicates system + counter driver to skip clock operations. + Example: system_counter: timer@306a0000 { @@ -22,4 +27,5 @@ Example: clocks = <&clk_8m>; clock-names = "per"; interrupts = ; + clock-frequency = <8333333>; }; -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel