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 85616C83F1A for ; Fri, 18 Jul 2025 17:13:22 +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:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ozONATMm95DKq4z3o2tZXwCzZk+P+GNaZu2OpH27kqE=; b=0q1zWEyGQc2yZZ k7mL+bc6krS7vuYGq8TdJSm+s65O9d7nJ088saL6fiQdD3QkVhtDiw9+CPlwt3ZDuA4cWMLGobX2j JyZlOZj0GjMOJUSh64yP89ImUc1H7vtMlnZaiM2wTZPekJP8OhV/b2+6Vfx/YgajxDeqpeHNOb8tU XUXBzIy7KQKaiaHbCBn5KbwtBwqrIfF2nbzF7xM/PIMfWT/X9u0oBc3MfaTO+qHFY0HFnP7/WN4Kr CYtO+wychevquOlq6LO50stMgFyRauJujJm0SKnZQlx5lDo2ia7rJ8F5W26H7gXOMtModiHuz4Emy /Z8GlZNptTJiBTy/d22A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ucodz-0000000DBqj-186f; Fri, 18 Jul 2025 17:13:11 +0000 Received: from mail-ua1-x92f.google.com ([2607:f8b0:4864:20::92f]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ucoXL-0000000DB4B-2cBp; Fri, 18 Jul 2025 17:06:20 +0000 Received: by mail-ua1-x92f.google.com with SMTP id a1e0cc1a2514c-87f4c8e9cdcso1102375241.2; Fri, 18 Jul 2025 10:06:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1752858378; x=1753463178; darn=lists.infradead.org; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date:from:to :cc:subject:date:message-id:reply-to; bh=JODog4W99P7CS8ZRV6Zf5jfAFaFc/53al1khJwbmT8A=; b=hEwPO/DL/Y6N0SoBThj7egVVB3TGdaIpHrXeFuSkse9c1EMkRe3uh7Q/m7OlFTrWEO XqiKfUHubHZQzGV/p5oM4P5Y+lHF8SC0eeOIx3qficGVmfAWH6ALRrCOu1eUqaeTzMf7 px5yQ+b7NVTU9QX7TnSx1Sk+LbMEYRrZmcxsJVPq8CyVGa7Aak+6b1ePXpaH2weGL9Me GE9tf6WDPDvYDkZFSIRE1qVkZUMZDnVoxylqjopw3P60kCXSHfExTE8be1iihVmtZxgX VnkAE3u3jfagKiffEQAuviqOVEBqslmTpeWUBhz0Ww++0OEVevW65gf2YrdDKUBTnr6F FyYw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752858378; x=1753463178; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=JODog4W99P7CS8ZRV6Zf5jfAFaFc/53al1khJwbmT8A=; b=f/aqgtCCr26pg4wgZHogzhwPqHkTFa/uI8XSWYnR88qZv/JbGRo2Wi21gQbOfqyfUM bwX67hUPtaTnse56oRUq9m43D6zqH1f65F6UBxZv0NcRGJ599WehBaVHUBwzJjeGeQH7 Hcuh6qBelPlTXDiBMLmvyOD2fjjB8ZIYEaBaVoj/z83nxiE2TfOYQGq5GsLZx069tpjL h1jrxTkt4qGF7Hmp6VY3UaiC54G75qRdqPAXa+H34SiUibaHAAu0qzCQLtjxXYmla6ay uzqVvwlXarA8qbISGXZBxdAkPGCEEAYzTZ//OKJp644uXWFo4ZtOLKJ+1gIUjPGfoD6i vpog== X-Forwarded-Encrypted: i=1; AJvYcCV788FKsPe2zRHocsGyKIFlrhWJxum8gKXI7XP+ysy2TO1ld+jsvzoXYMHNfB4qfPss/ER94IdgWIT+Vaiiq7g=@lists.infradead.org, AJvYcCVzWHWIOecxnYlX6cfQjWQ6Pwkn0dsHc+jOfLcEtWh+DE3h+xE4xkB1UuPD6n3PY35UGwqWJF8jDRE/0/rX9UrV@lists.infradead.org X-Gm-Message-State: AOJu0YxNEefu4XYbQWroFCGe2cQkZfPdzmQcoYhFkwYBCiqj1zLbfsst Xt+wJ2aoQFTqen+0ddner9LtaqsmJ9P1kCIOLRg2hk7I5VdZjbTASZL1 X-Gm-Gg: ASbGnculs79YASso/oVmhRviR1Q0kMkGQdIkJ1pgfG35GH0SMXbQpAIt6F6nbLvP6x9 1xS9kU3KwpdzJL0P7HD/DQNvkriN8YlilTW+voOTYIkNbhivOdOIiioCHxGPQ7qtasu+OGa/pSN jSJIWULwE63t3Pd+YwKx1cHVOdPHXVA+0d15sl2jr3or7JUAmMJrgYY83O4L6oVZ2xN9DcrtHrI 9K3N6LI1nuTIc4InCONiO//6tuPaYJ748ou9cH9/xg54g5wbof96kJCOMrKLYXKnpJp7NpY3XnB CWYnItjwM0+BU4Efw1JdsaK8KY5OyLFQx30DSs44AcJnZtZjFqJv14xLLiRtCPLYeYagCy2JLlL mTwOMK0KDLg== X-Google-Smtp-Source: AGHT+IHLlDQix1yjP8AWd2tUqC/hSHZ26YyE8eCcJfbFHbJgwOfqTSR7MAKzgkxm2sVR4SNzi9k28Q== X-Received: by 2002:a05:6102:8027:b0:4e7:c14c:9e30 with SMTP id ada2fe7eead31-4f998126d21mr4372502137.21.1752858377696; Fri, 18 Jul 2025 10:06:17 -0700 (PDT) Received: from geday ([2804:7f2:800b:45e8::dead:c001]) by smtp.gmail.com with ESMTPSA id ada2fe7eead31-4f9acdbb99bsm608794137.2.2025.07.18.10.06.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Jul 2025 10:06:17 -0700 (PDT) Date: Fri, 18 Jul 2025 14:06:08 -0300 From: Geraldo Nascimento To: Shawn Lin Cc: Hugh Cole-Baker , Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Bjorn Helgaas , Heiko Stuebner , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org Subject: Re: [RFC PATCH v3 2/3] PCI: rockchip-host: Retry link training on failure without PERST# Message-ID: References: <067e1833-8527-4c66-90f5-d284f7d2ca5c@rock-chips.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <067e1833-8527-4c66-90f5-d284f7d2ca5c@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250718_100619_659360_71087B4D X-CRM114-Status: GOOD ( 18.69 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org T24gRnJpLCBKdWwgMTgsIDIwMjUgYXQgMTE6NDY6MzNBTSArMDgwMCwgU2hhd24gTGluIHdyb3Rl Ogo+IOWcqCAyMDI1LzA3LzE4IOaYn+acn+S6lCAxMTozMywgR2VyYWxkbyBOYXNjaW1lbnRvIOWG memBkzoKPiA+IE9uIEZyaSwgSnVsIDE4LCAyMDI1IGF0IDA5OjU1OjQyQU0gKzA4MDAsIFNoYXdu IExpbiB3cm90ZToKPiA+PiBDb3VsZCB5b3UgaGVscCB0cmllZCB0aGlzPwo+ID4+IFsxXSBhcHBs eSB5b3VyIHBhdGNoIDMgZmlyc3QKPiA+IAo+ID4gU3VyZSwgSSdtIGFsd2F5cyBvcGVuIGZvciB0 ZXN0aW5nLCBidXQgY291bGQgeW91IGNsYXJpZnkgdGhlIHBhdGNoIDMKPiA+IHBhcnQ/IEFGQUlL IHRoaXMgc2VyaWVzIG9mIG1pbmUgb25seSBoYXMgMiBwYXRjaGVzLCBzbyBJJ20gYSBsaXR0bGUK PiA+IGNvbmZ1c2VkIGFib3V0IGV4YWN0bHkgd2hpY2ggcGF0Y2ggdG8gYXBwbHkgYXMgYSBwcmVs aW1pbmFyeSBzdGVwLgo+IAo+IFBhdGNoIDMgcmVmZXJzIHRvICJhcm02NDogZHRzOiByb2NrY2hp cDogZHJvcCBQQ0llIDN2MyBhbHdheXMtb24gYW5kCj4gYm9vdC1vbiIgd2hpY2ggbGV0IGtlcm5l bCBmdWxseSBjb250cm9sbGVyIHRoZSBwb3dlciBpbiBjYXNlIGZpcm13YXJlCj4gZGlkIGl0IGlu IGFkdmFuY2VkLgoKSGkgU2hhd24sCgpJIHRlc3RlZCB5b3VyIHBhdGNoIGJ1dCB1bmZvcnR1bmF0 ZWx5IGl0IGRvZXMgbm90IHdvcmssIFBNOTgxYSBTU0QgInBsYXlzCmRlYWQiIGFuZCAyLjUgR1Qv cyB0cmFpbmluZyBuZXZlciBjb21wbGV0ZXMsIGV2ZW4gd2l0aCB0aGUgYmlnZ2VyCnRpbWVvdXQu CgpJIGhvcGUgeW91IGdldCB0aGUgY2hhbmNlIHRvIHRlc3QgbXkgcGF0Y2ggc29vbiwgYmVjYXVz ZSBvbmNlIHlvdSBzaGFyZQp5b3VyIHJlc3VsdHMgdGhlcmUgY291bGQgYmUgdHdvIHBvc3NpYmxl IHNjZW5hcmlvczoKCjEpIFBhdGNoIGRvZXMgbm90IGFsbGV2aWF0ZSBwcm9ibGVtIGZvciB5b3U6 CiAgIElmIHRoaXMgaXMgdGhlIGNhc2UsIHRoZW4gdGhlcmUncyBsaXR0bGUgSSBjYW4gZG8gZnVy dGhlciBhbmQgdGhpcwogICBiZWNvbWVzIGEgd2lsZCBnb29zZSBjaGFzZSwgc28gbm8gY2hhbmNl IG9mIHVwc3RyZWFtaW5nIGFueXRoaW5nIGFuZAogICBJJ2xsIGp1c3QgbW92ZSBvbiB0byBtb3Jl IHVzZWZ1bCB3b3JrIGFuZCBsZWF2ZSBldmVyeWJvZHkgZWxzZSB0byBkbwogICB0aGVpciB1c2Vm dWwgd29yayB0b28uCgoyKSBQYXRjaCB3b3JrcyBhbmQgcHJldmlvdXNseSBub24td29ya2luZyBT U0QgaXMgbm93IHdvcmtpbmc6CiAgIEluIHRoaXMgY2FzZSB0aGVyZSdzIHNvbWV0aGluZyBzZXJp b3VzIGdvaW5nIG9uIGFuZCBpdCBpcyBvdXIgbWlzc2lvbgogICB0byBmaW5kIGEgd2F5IHRvIGNv cnJlY3RseSB1cHN0cmVhbSBhIGZpeC4KClRoYW5rcywKR2VyYWxkbyBOYXNjaW1lbnRvCgpfX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpMaW51eC1yb2NrY2hp cCBtYWlsaW5nIGxpc3QKTGludXgtcm9ja2NoaXBAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8v bGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXJvY2tjaGlwCg==