From patchwork Tue Nov 30 13:25:22 2021 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: 1561661 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=QGS8qhgY; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4J3NJb3w00z9sVc for ; Wed, 1 Dec 2021 00:25:51 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240231AbhK3N3J (ORCPT ); Tue, 30 Nov 2021 08:29:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240235AbhK3N3H (ORCPT ); Tue, 30 Nov 2021 08:29:07 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4D7E4C061746 for ; Tue, 30 Nov 2021 05:25:48 -0800 (PST) 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 ams.source.kernel.org (Postfix) with ESMTPS id 16CFDB817AF for ; Tue, 30 Nov 2021 13:25:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B7D26C53FD0; Tue, 30 Nov 2021 13:25:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638278745; bh=dYfzN6X0G22H94LW3KF/P1tqeqWEbRgCPaXPmrfgByY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QGS8qhgYuRoVGeR3Fc73Y3IaBUZbFMfOqECXvYZEr1vcQxciwMlwJ89cLghEGiW9V 4JA9N+jCO34EXhH9SHVz4hp9qsUC17u8qHcFGqybOGZZWUQzT1KJ4WxefNkja1gg9P JKPbJ085FboHRQQJ2BiktdnJlU3H99iX5YyE+vZAJLu8fDFPhrle8rWsyNxX6/sH5D s50miMhMCSezJDRJhAUC8956dv1RRioAu8Rp50SX5xG0yVPd38s5gIQbayI1dnO/uV OjeJNL5bKa+Xhb4EKNw/trshsn6xtLmKkroJW/uwxnxyHIcfwt3Cy2n/CmL8EPndxv GQCIJZML/AC0Q== From: =?utf-8?q?Marek_Beh=C3=BAn?= To: Lorenzo Pieralisi Cc: pali@kernel.org, linux-pci@vger.kernel.org, =?utf-8?q?Marek_Beh=C3=BAn?= Subject: [PATCH v3 10/11] PCI: aardvark: Disable link training when unbinding driver Date: Tue, 30 Nov 2021 14:25:22 +0100 Message-Id: <20211130132523.28126-11-kabel@kernel.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211130132523.28126-1-kabel@kernel.org> References: <20211130132523.28126-1-kabel@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Pali Rohár Disable link training circuit in driver unbind sequence. Signed-off-by: Pali Rohár Signed-off-by: Marek Behún --- drivers/pci/controller/pci-aardvark.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index 271ebecee965..e5c88f1c177b 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -1741,6 +1741,11 @@ static int advk_pcie_remove(struct platform_device *pdev) if (pcie->reset_gpio) gpiod_set_value_cansleep(pcie->reset_gpio, 1); + /* Disable link training */ + val = advk_readl(pcie, PCIE_CORE_CTRL0_REG); + val &= ~LINK_TRAINING_EN; + advk_writel(pcie, val, PCIE_CORE_CTRL0_REG); + /* Disable outbound address windows mapping */ for (i = 0; i < OB_WIN_COUNT; i++) advk_pcie_disable_ob_win(pcie, i);