From patchwork Wed Jul 19 13:59:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Zink X-Patchwork-Id: 704412 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 D8618EB64DA for ; Wed, 19 Jul 2023 14:00:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231466AbjGSOAE (ORCPT ); Wed, 19 Jul 2023 10:00:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40938 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231449AbjGSOAC (ORCPT ); Wed, 19 Jul 2023 10:00:02 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BAB641A6 for ; Wed, 19 Jul 2023 07:00:00 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qM7iW-0001Wg-6p; Wed, 19 Jul 2023 15:59:48 +0200 Received: from [2a0a:edc0:0:1101:1d::39] (helo=dude03.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1qM7iV-000cJK-9F; Wed, 19 Jul 2023 15:59:47 +0200 Received: from localhost ([::1] helo=dude03.red.stw.pengutronix.de) by dude03.red.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1qM7iU-003C7P-6u; Wed, 19 Jul 2023 15:59:46 +0200 From: Johannes Zink Date: Wed, 19 Jul 2023 15:59:19 +0200 Subject: [PATCH] arm64: dts: imx8mp: use correct clock for eqos timestamping counter MIME-Version: 1.0 Message-Id: <20230719-imx8mp_enet_qos_use_125mhz_clock-v1-1-782c9ac6e121@pengutronix.de> X-B4-Tracking: v=1; b=H4sIADbst2QC/x2Nyw7CIBAAf6XZsyQFHxV/pTEEcJWNPCprTWPTf 5d4nDnMrMBYCRku3QoVP8RUcgO568AHmx8o6NYYVK/2/SC1oLSc02Qw49u8CpuZ0Uh1TOFrfCz +KaQ/nKT0etDOQss4yyhctdmHFspzjE1OFe+0/L/jddt+hBR7gIcAAAA= To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team Cc: patchwork-jzi@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Johannes Zink X-Mailer: b4 0.12.2 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: j.zink@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: devicetree@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The i.MX8MP Reference Manual rev 1 06/2021, section 11.7.2.5 "Timestamp Support" indicates the PTP timestamp clock expects a typical frequency of 125MHz. As this also improves the precision of the measured timestamps: assign appropriate 125MHz Clock parent. As no one except the timestamping counter uses this clock, there are no side-effects of this change in other peripherals. Signed-off-by: Johannes Zink --- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- base-commit: ba345b77fae7054d0cbd033283c47033e45db6d8 change-id: 20230719-imx8mp_enet_qos_use_125mhz_clock-1c4611c979ba Best regards, diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi index 6f2f50e1639c..7f80dff914c2 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi @@ -1334,7 +1334,7 @@ eqos: ethernet@30bf0000 { <&clk IMX8MP_CLK_ENET_QOS_TIMER>, <&clk IMX8MP_CLK_ENET_QOS>; assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_266M>, - <&clk IMX8MP_SYS_PLL2_100M>, + <&clk IMX8MP_SYS_PLL2_125M>, <&clk IMX8MP_SYS_PLL2_125M>; assigned-clock-rates = <0>, <100000000>, <125000000>; nvmem-cells = <ð_mac2>;