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=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 344DCC433E1 for ; Fri, 21 Aug 2020 16:19:42 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 F089F208DB for ; Fri, 21 Aug 2020 16:19:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="lr5O0gaf"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="T0AolvIs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F089F208DB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=merlin.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=QwGa5UXUU4tnSVBZ5crOUGp9jpNCBvAugJqxhfiUjIA=; b=lr5O0gafUpMHMGIXi1YqCX5ig XC/oS/cLYQBJLdeOPdopFa6Vnbaqm7dIMM2Zj5MLGnsFd37vWPnqo4pGOa8wv03Vt155OSL8YeM2u 5D0cARjLFL9F8igJKBhHi5QvpmpDXb1gdzgZTdqxPX8Qd5HT/hk/rlvKD2V7BXN5xGIcdMBVhFOcq rWT9oIyGGfl5ampR3wWOAAcXuPGPmNsk319JxwNXXrUlpNjY9paHoLkJyljRu1IXmAlsoJxuKQ5dd 82vOc1GVma9Xq8rsXmMthNNxYZJdcIAOvovgf6cOsAbMLtZZMY6cOM4XoKfV3AY0qKzM9EDXsLJh7 lQ8LRKaAQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k99ji-0003hZ-1J; Fri, 21 Aug 2020 16:17:50 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k99iW-0002sv-6G for linux-arm-kernel@lists.infradead.org; Fri, 21 Aug 2020 16:16:39 +0000 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 722E222BEB; Fri, 21 Aug 2020 16:16:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598026594; bh=NZ1zbKrwo5IZCErTAktS1k3LZeAW/QGyONeoRh3BaGs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T0AolvIssbvG74Ggc0PO63MYwlCtD2QjBmJTrIGPgwz7DAwvKUCs7QCW+kaUroLPB zJr/klGu6px2mldQwHY4G2dmmXb/zBlNekscWFH8aCprUVw5Q0br6EKVW+4F0AXmCR py2+QWbXahfBV7K1CqI6alU9/621IyOS5WaCj8oc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.7 38/61] ARM: dts: ls1021a: output PPS signal on FIPER2 Date: Fri, 21 Aug 2020 12:15:22 -0400 Message-Id: <20200821161545.347622-38-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200821161545.347622-1-sashal@kernel.org> References: <20200821161545.347622-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200821_121637_927406_BF9DF7FD X-CRM114-Status: GOOD ( 15.75 ) 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: Sasha Levin , devicetree@vger.kernel.org, Richard Cochran , Yangbo Lu , Shawn Guo , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Yangbo Lu [ Upstream commit 5656bb3857c4904d1dec6e1b8f876c1c0337274e ] The timer fixed interval period pulse generator register is used to generate periodic pulses. The down count register loads the value programmed in the fixed period interval (FIPER). At every tick of the timer accumulator overflow, the counter decrements by the value of TMR_CTRL[TCLK_PERIOD]. It generates a pulse when the down counter value reaches zero. It reloads the down counter in the cycle following a pulse. To use the TMR_FIPER register to generate desired periodic pulses. The value should programmed is, desired_period - tclk_period Current tmr-fiper2 value is to generate 100us periodic pulses. (But the value should have been 99995, not 99990. The tclk_period is 5.) This patch is to generate 1 second periodic pulses with value 999999995 programmed which is more desired by user. Signed-off-by: Yangbo Lu Acked-by: Richard Cochran Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin --- arch/arm/boot/dts/ls1021a.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi index 760a68c163c83..b2ff27af090ec 100644 --- a/arch/arm/boot/dts/ls1021a.dtsi +++ b/arch/arm/boot/dts/ls1021a.dtsi @@ -772,7 +772,7 @@ ptp_clock@2d10e00 { fsl,tmr-prsc = <2>; fsl,tmr-add = <0xaaaaaaab>; fsl,tmr-fiper1 = <999999995>; - fsl,tmr-fiper2 = <99990>; + fsl,tmr-fiper2 = <999999995>; fsl,max-adj = <499999999>; fsl,extts-fifo; }; -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 C535CC433E1 for ; Fri, 21 Aug 2020 17:16:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B1D720738 for ; Fri, 21 Aug 2020 17:16:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598030174; bh=NZ1zbKrwo5IZCErTAktS1k3LZeAW/QGyONeoRh3BaGs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=BLuDG+KW9lPZEDeUG4OlRGcGrD0iBlBwsad2oI2U2lRttBWU7Xyk75o8f4jsAVNAO fDBVHzpKD4cDaeKg9tcKSrr8UWtZ6C7IQHHPxECdUoWFzVn4mP9RQV4nPsGeWzUpeO 0+BDH3r+R38+u5++HQS+BI+nXIRUba+zLkX8p8fU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728976AbgHURQM (ORCPT ); Fri, 21 Aug 2020 13:16:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:49958 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728090AbgHUQQe (ORCPT ); Fri, 21 Aug 2020 12:16:34 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 722E222BEB; Fri, 21 Aug 2020 16:16:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598026594; bh=NZ1zbKrwo5IZCErTAktS1k3LZeAW/QGyONeoRh3BaGs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T0AolvIssbvG74Ggc0PO63MYwlCtD2QjBmJTrIGPgwz7DAwvKUCs7QCW+kaUroLPB zJr/klGu6px2mldQwHY4G2dmmXb/zBlNekscWFH8aCprUVw5Q0br6EKVW+4F0AXmCR py2+QWbXahfBV7K1CqI6alU9/621IyOS5WaCj8oc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yangbo Lu , Richard Cochran , Shawn Guo , Sasha Levin , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH AUTOSEL 5.7 38/61] ARM: dts: ls1021a: output PPS signal on FIPER2 Date: Fri, 21 Aug 2020 12:15:22 -0400 Message-Id: <20200821161545.347622-38-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200821161545.347622-1-sashal@kernel.org> References: <20200821161545.347622-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Yangbo Lu [ Upstream commit 5656bb3857c4904d1dec6e1b8f876c1c0337274e ] The timer fixed interval period pulse generator register is used to generate periodic pulses. The down count register loads the value programmed in the fixed period interval (FIPER). At every tick of the timer accumulator overflow, the counter decrements by the value of TMR_CTRL[TCLK_PERIOD]. It generates a pulse when the down counter value reaches zero. It reloads the down counter in the cycle following a pulse. To use the TMR_FIPER register to generate desired periodic pulses. The value should programmed is, desired_period - tclk_period Current tmr-fiper2 value is to generate 100us periodic pulses. (But the value should have been 99995, not 99990. The tclk_period is 5.) This patch is to generate 1 second periodic pulses with value 999999995 programmed which is more desired by user. Signed-off-by: Yangbo Lu Acked-by: Richard Cochran Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin --- arch/arm/boot/dts/ls1021a.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi index 760a68c163c83..b2ff27af090ec 100644 --- a/arch/arm/boot/dts/ls1021a.dtsi +++ b/arch/arm/boot/dts/ls1021a.dtsi @@ -772,7 +772,7 @@ ptp_clock@2d10e00 { fsl,tmr-prsc = <2>; fsl,tmr-add = <0xaaaaaaab>; fsl,tmr-fiper1 = <999999995>; - fsl,tmr-fiper2 = <99990>; + fsl,tmr-fiper2 = <999999995>; fsl,max-adj = <499999999>; fsl,extts-fifo; }; -- 2.25.1