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 9F80CC6FD18 for ; Wed, 29 Mar 2023 14:43:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id: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=Fk09dEv1xbGR7LKqaScDatBTdOy+jamxu3y0B0WHvkU=; b=XDkTv9uaup1tac 8ZvKmptxTDJ5eTEqoK+a8IBXjy+SVZ4Ja0oG8NlZcMAbXWS6qs61igWv3aM1LBVqKpxlzpA863Jqv TBPTNtkA6yELfchBCDQx6tLLI2p4SXOqg7QnX7HyAq8qdAAbJyOhbFbUu2TBW5EKJLa1wI3l2afEU rkz1e4tA2KUWjPEnDO8C0xTnPA/LcTSiWLQgXAtWFQVzZVsWuMjYJt84ZexeZjH5JBpGLvgIJtDyB 3SYwYBE2DTDxF0rxErlb+AXMOdL4xi4xBEeS9jJN8Zw8SUCLR2wUgLJW6FYDB/ToHpHuYZBrNeSTA phfYuYlP6jCc3CrFQ2iw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1phWzm-000eiD-0y; Wed, 29 Mar 2023 14:41:50 +0000 Received: from lelv0143.ext.ti.com ([198.47.23.248]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1phWzj-000eh8-2N for linux-arm-kernel@lists.infradead.org; Wed, 29 Mar 2023 14:41:49 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 32TEfVuv023350; Wed, 29 Mar 2023 09:41:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1680100891; bh=2Il4jxvtfAKuNqlbBVyI4WnKDZ3OSApBhuRDUqtaCr8=; h=Date:Subject:To:CC:References:From:In-Reply-To; b=qwSmbBkhXsR0ftZsk0O/+Zkge1zQJA/L2qwyPE+kjp8JJM+bYFlNO/RbMvEKr6TH/ QHA98mD/asSR80IyJv20D/QkePd9VrPd+XCs8udugfGwEXjnLIL8Sjzf1BLYxtyM1V jUBWM04FhnMEqcZXtwYQtJrcWH60TatvK0pnNxU4= Received: from DFLE107.ent.ti.com (dfle107.ent.ti.com [10.64.6.28]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 32TEfV1d105729 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 29 Mar 2023 09:41:31 -0500 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Wed, 29 Mar 2023 09:41:31 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Wed, 29 Mar 2023 09:41:31 -0500 Received: from [10.249.133.214] (ileaxei01-snat2.itg.ti.com [10.180.69.6]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 32TEfPB2023296; Wed, 29 Mar 2023 09:41:26 -0500 Message-ID: <12c89cb8-8cea-df6a-7650-fa3059bf5a5b@ti.com> Date: Wed, 29 Mar 2023 20:11:25 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 Subject: Re: [PATCH v2] PCI: cadence: Fix Gen2 Link Retraining process Content-Language: en-US To: Siddharth Vadapalli , , , , , , CC: , , , , References: <20230315070800.1615527-1-s-vadapalli@ti.com> From: "Raghavendra, Vignesh" In-Reply-To: <20230315070800.1615527-1-s-vadapalli@ti.com> X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230329_074147_943876_495322EC X-CRM114-Status: GOOD ( 15.73 ) 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: , 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 Hi Lorenzo, Bjorn, On 3/15/2023 12:38 PM, Siddharth Vadapalli wrote: > The Link Retraining process is initiated to account for the Gen2 defect in > the Cadence PCIe controller in J721E SoC. The errata corresponding to this > is i2085, documented at: > https://www.ti.com/lit/er/sprz455c/sprz455c.pdf > > The existing workaround implemented for the errata waits for the Data Link > initialization to complete and assumes that the link retraining process > at the Physical Layer has completed. However, it is possible that the > Physical Layer training might be ongoing as indicated by the > PCI_EXP_LNKSTA_LT bit in the PCI_EXP_LNKSTA register. > > Fix the existing workaround, to ensure that the Physical Layer training > has also completed, in addition to the Data Link initialization. > > Fixes: 4740b969aaf5 ("PCI: cadence: Retrain Link to work around Gen2 training defect") > Signed-off-by: Siddharth Vadapalli > Reviewed-by: Vignesh Raghavendra > --- > Changes from v1: > 1. Collect Reviewed-by tag from Vignesh Raghavendra. > 2. Rebase on next-20230315. > > v1: > https://lore.kernel.org/r/20230102075656.260333-1-s-vadapalli@ti.com > > .../controller/cadence/pcie-cadence-host.c | 27 +++++++++++++++++++ > 1 file changed, 27 insertions(+) > Wondering do one of you be pulling this patch in? This patch was never picked for 6.3-rc1 merge cycle... Just want to make sure pcie-cadence*.c and pci-j721e.c patches have a path to reach pci tree. [...] Regards Vignesh _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel