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=unavailable 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 63B08C433DF for ; Fri, 21 Aug 2020 17:08:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2EECA20656 for ; Fri, 21 Aug 2020 17:08:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598029723; bh=vl8oRoCeWLKb4mHXsDMNYnDGq4+Zf3obi0yoFIYb55k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=M2KqLBP7rYiVAKa/XOSrQz1WnpZ3nKKrrg0sID3/pk//r7Hv7yzJ4A1mO6FS37sWZ aeEM3VHKqbzEXIl10Jvah7r16MNSYVbipXFqx+bVfn9AiZo0061ikRaI4Ailbei1s3 uuoiosUzr/RyeqkQCTg5bDw0gT+4JN7qh9iRBtno= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728927AbgHURIk (ORCPT ); Fri, 21 Aug 2020 13:08:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:49282 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728208AbgHUQRm (ORCPT ); Fri, 21 Aug 2020 12:17:42 -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 7E6DD208DB; Fri, 21 Aug 2020 16:17:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598026662; bh=vl8oRoCeWLKb4mHXsDMNYnDGq4+Zf3obi0yoFIYb55k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RGFjH+BOOmLsmdSokfPJ9p+tiQw1MA0D1oMHBfiTOYEU+zxPHgRLdpqxsndPwFy3H sXPJYlK45RQeIcEiYTEGLhbznVsezaS3spJ+K4Juk7XJNED89QZwXd7MYF90EuQWO1 z+N1qucZlgZHAEGxS8CURr2WYwnJPqQuLWQPpDZE= 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 5.4 29/48] ARM: dts: ls1021a: output PPS signal on FIPER2 Date: Fri, 21 Aug 2020 12:16:45 -0400 Message-Id: <20200821161704.348164-29-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200821161704.348164-1-sashal@kernel.org> References: <20200821161704.348164-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 63d9f4a066e38..5a8e58b663420 100644 --- a/arch/arm/boot/dts/ls1021a.dtsi +++ b/arch/arm/boot/dts/ls1021a.dtsi @@ -753,7 +753,7 @@ 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 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 C18E6C433E4 for ; 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Fri, 21 Aug 2020 16:17:45 +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 7E6DD208DB; Fri, 21 Aug 2020 16:17:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598026662; bh=vl8oRoCeWLKb4mHXsDMNYnDGq4+Zf3obi0yoFIYb55k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RGFjH+BOOmLsmdSokfPJ9p+tiQw1MA0D1oMHBfiTOYEU+zxPHgRLdpqxsndPwFy3H sXPJYlK45RQeIcEiYTEGLhbznVsezaS3spJ+K4Juk7XJNED89QZwXd7MYF90EuQWO1 z+N1qucZlgZHAEGxS8CURr2WYwnJPqQuLWQPpDZE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 29/48] ARM: dts: ls1021a: output PPS signal on FIPER2 Date: Fri, 21 Aug 2020 12:16:45 -0400 Message-Id: <20200821161704.348164-29-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200821161704.348164-1-sashal@kernel.org> References: <20200821161704.348164-1-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_121743_976765_DEB371DD 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 63d9f4a066e38..5a8e58b663420 100644 --- a/arch/arm/boot/dts/ls1021a.dtsi +++ b/arch/arm/boot/dts/ls1021a.dtsi @@ -753,7 +753,7 @@ 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