From patchwork Tue Sep 27 14:19:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marek_Beh=C3=BAn?= X-Patchwork-Id: 12990704 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 9E998C6FA82 for ; Tue, 27 Sep 2022 14:22:30 +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:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=GsQ8AY7EL5r1WfUMk3RhOW0UISxNSa+FozZsqkh1nY0=; b=HG2TGGd7x5WgCA J6yD737+85Xl35mqpkpKmLXldqgwIM65OUYbq3thopICwlGe0GZoi4EqqcfAq9HBQOuXHuPPm5bQf 788L4XEyoiWq3Xq2wdqjXMDukGGgZCd6C/u16jjmM+iJLNd9+Xtfjb3ZJaiP2tegNpTs64z6VHks8 ogPDBWekQFfBdLebiaHho+BNV27+QWqVRXauQSGgDs1oRRYPKaoWYFrxt5NMOG0VKYi9SQK9zJ7ZE gVpUIIgzWslH897KPldAhXVRcwlU/6OWU116VsuEhNiOuskJ+x4Z/a12Ch/0SQFx8W8DsCtn00HLY 279V8FF+Aq59ENfOk2HA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1odBSh-00BBm0-V0; Tue, 27 Sep 2022 14:21:28 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1odBR8-00BB6X-DS for linux-arm-kernel@lists.infradead.org; Tue, 27 Sep 2022 14:19:51 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id F1D2D619E3; Tue, 27 Sep 2022 14:19:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2BF85C433C1; Tue, 27 Sep 2022 14:19:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664288389; bh=tSjcRHzwdwDzj8PfrZEsmRIyZScrpL96WWWx0UfyT9o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Fl9zj7S0WWn6d/YtEQT5wLM3hQQ5O3t5EFBLp8lVq24DBE+1A+5JeSMgFIuppGjha X0zTVWOlzPkS9AZuQzFPK26+bVSmzZMGtyWNWjWRV0rboP+rS1lQcyMWHbP7y0+euR zYD7rhXpDS63fEdrX7guKPCVINNsCSEq7GxS6Wcex+s/nMobyVoliWBuenFQ0ECJWH lnzkTtzwpV+pB2d37cNOpSGERdB1Q8zBlgVq29pyYwqVyGrojNRZJAGLX7n1KP0ge3 7wpAgJWaIj1Vu3Xs4sCDsYCBGXQG8muL/wAN4zKVksw+MdEfuVWLySbQ5cOvIZopx3 fwvWYGcv/BWTA== From: =?utf-8?q?Marek_Beh=C3=BAn?= To: Lorenzo Pieralisi Cc: Bjorn Helgaas , Gregory CLEMENT , pali@kernel.org, =?utf-8?q?K?= =?utf-8?q?rzysztof_Wilczy=C5=84ski?= , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, =?utf-8?q?Marek_Beh=C3=BAn?= Subject: [PATCH v2 09/10] PCI: aardvark: Explicitly disable Marvell strict ordering Date: Tue, 27 Sep 2022 16:19:25 +0200 Message-Id: <20220927141926.8895-10-kabel@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220927141926.8895-1-kabel@kernel.org> References: <20220927141926.8895-1-kabel@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220927_071950_553279_EA59661B X-CRM114-Status: GOOD ( 12.50 ) 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 Instead of implicitly disabling BIT(5) (STRICT_ORDER_ENABLE bit) of the CORE_CTRL2 by writing PCIE_CORE_CTRL2_RESERVED | PCIE_CORE_CTRL2_TD_ENABLE to it, disable it explicitly, with read-modify-write. Signed-off-by: Marek Behún --- drivers/pci/controller/pci-aardvark.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index e816ab726f66..73a604f70f06 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -600,8 +600,8 @@ static void advk_pcie_setup_hw(struct advk_pcie *pcie) advk_writel(pcie, reg, PCIE_CORE_PCIEXP_CAP + PCI_EXP_DEVCTL); /* Program PCIe Control 2 to disable strict ordering */ - reg = PCIE_CORE_CTRL2_RESERVED | - PCIE_CORE_CTRL2_TD_ENABLE; + reg = advk_readl(pcie, PCIE_CORE_CTRL2_REG); + reg &= ~PCIE_CORE_CTRL2_STRICT_ORDER_ENABLE; advk_writel(pcie, reg, PCIE_CORE_CTRL2_REG); /* Set lane X1 */