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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id C901CC83030 for ; Thu, 3 Jul 2025 23:41:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LIyqDlLt3CT1utfTbk2TkfmajXEi5ZvgikV+/3VcJck=; b=l3/CEJM6sGNWUlqSo71jZSkdqH xesu+VNJZ2K6CVGe2RfgEaKEjS4N4yQu5L7gRh5WqtlQTWwoC738S/ZuStKrcPL7nrX6gtf7YK51M J0FTNcGqgShX89fFyZvCc0vfGOqINK9IZ9SzE4OKmnuWov2u9KsdSznMBqM77Ezmuslmi2LH8zKiQ 8hJ+1BhTZH5ZrpHPXQtnJrEIxzpAbf0uxu8o79PVhNNk+Jl1rajW6L/xAqqq+0El0p65E2tNrCJ+K if4rzmV9zDKSn8g/J06UggDeQkn3n4p6J8Twkq6JyFU4HH8s93iBkPkEGQ6MXkrk9MgAEMtbiTWYi 9MmAi9ww==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uXTY0-0000000Cr2e-17Sn; Thu, 03 Jul 2025 23:40:56 +0000 Received: from out-170.mta0.migadu.com ([91.218.175.170]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uXSnn-0000000Cn9T-3jqc for linux-arm-kernel@lists.infradead.org; Thu, 03 Jul 2025 22:53:13 +0000 Message-ID: <218ed5ce-6e0d-41f7-809b-04e554d08c5a@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1751583186; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LIyqDlLt3CT1utfTbk2TkfmajXEi5ZvgikV+/3VcJck=; b=let/ROpgpEs+HqLRrGdvieskEbzt9tFEKP9ekxEOGcwqnmErdLrGJ016+f28aLWFswBbmF exExgIED9KiRFUeIyT4jn1VfJq/r0JPY0xLLmJbbbF+GAA6mGFCUB1WGIJTwYsMse1RLb4 HiQRVv3DpWbFq6UjPVjAFyXhxzupLh0= Date: Thu, 3 Jul 2025 23:52:17 +0100 MIME-Version: 1.0 Subject: Re: [PATCH net-next v10 06/11] net: ti: prueth: Adds HW timestamping support for PTP using PRU-ICSS IEP module To: Parvathi Pudi , danishanwar@ti.com, rogerq@kernel.org, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, ssantosh@kernel.org, richardcochran@gmail.com, s.hauer@pengutronix.de, m-karicheri2@ti.com, glaroque@baylibre.com, afd@ti.com, saikrishnag@marvell.com, m-malladi@ti.com, jacob.e.keller@intel.com, diogo.ivo@siemens.com, javier.carrasco.cruz@gmail.com, horms@kernel.org, s-anna@ti.com, basharath@couthit.com Cc: linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, pratheesh@ti.com, prajith@ti.com, vigneshr@ti.com, praneeth@ti.com, srk@ti.com, rogerq@ti.com, krishna@couthit.com, pmohan@couthit.com, mohan@couthit.com References: <20250702140633.1612269-1-parvathi@couthit.com> <20250702151756.1656470-7-parvathi@couthit.com> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Vadim Fedorenko In-Reply-To: <20250702151756.1656470-7-parvathi@couthit.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250703_155312_091004_1BA2B708 X-CRM114-Status: GOOD ( 16.40 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 02/07/2025 16:17, Parvathi Pudi wrote: > From: Roger Quadros > > PRU-ICSS IEP module, which is capable of timestamping RX and > TX packets at HW level, is used for time synchronization by PTP4L. > > This change includes interaction between firmware and user space > application (ptp4l) with required packet timestamps. The driver > initializes the PRU firmware with appropriate mode and configuration > flags. Firmware updates local registers with the flags set by driver > and uses for further operation. RX SOF timestamp comes along with > packet and firmware will rise interrupt with TX SOF timestamp after > pushing the packet on to the wire. > > IEP driver is available in upstream and we are reusing for hardware > configuration for ICSSM as well. On top of that we have extended it > with the changes for AM57xx SoC. > > Extended ethtool for reading HW timestamping capability of the PRU > interfaces. > > Currently ordinary clock (OC) configuration has been validated with > Linux ptp4l. > > Signed-off-by: Roger Quadros > Signed-off-by: Andrew F. Davis > Signed-off-by: Basharath Hussain Khaja > Signed-off-by: Parvathi Pudi > --- > drivers/net/ethernet/ti/icssg/icss_iep.c | 42 ++ > drivers/net/ethernet/ti/icssm/icssm_ethtool.c | 23 + > drivers/net/ethernet/ti/icssm/icssm_prueth.c | 423 +++++++++++++++++- > drivers/net/ethernet/ti/icssm/icssm_prueth.h | 11 + > .../net/ethernet/ti/icssm/icssm_prueth_ptp.h | 85 ++++ > 5 files changed, 582 insertions(+), 2 deletions(-) > create mode 100644 drivers/net/ethernet/ti/icssm/icssm_prueth_ptp.h > Reviewed-by: Vadim Fedorenko