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 578AFC83F1A for ; Thu, 17 Jul 2025 15:02:26 +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=XRzfdnVpS5IKI6eVXdPUVwhxWKxYfe13vrFPRkq3RFA=; b=OxgksNXFm9nOSW pkvTzg8wWQhCzuyCVJYjOj7NNMk5cm78Rk8Vf27zMCyf4NJoBSednxXjB2m6/DU+on7xoTqZ1Ra92 WF9ZWYITVyJoksy0GBkMZ2XrEIBO7GDIv1ABUZA9tfGZhtkA48B8BxE+ZT2OnnmvRVZF2RKGRYDWm isU9kcyvD+768b0NPJ5bbCmoJoZ+Dl9bOMcfCf23ngdWhuPlRwmTfG6qmhHfR2a1ZzGJG/PT+UwWO qZdypPAoRGvPN/It5p3ktCRtJB2Odpz+hPxMoisUdBW4JIEBv7lkUa8BEF83SofTNYWt/F7zo2EE+ y6Yzj7U6mUQhH38Uf0yA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ucQ7k-0000000ARaY-0ST5; Thu, 17 Jul 2025 15:02:16 +0000 Received: from mail-ua1-x92a.google.com ([2607:f8b0:4864:20::92a]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ucP0s-0000000AIXq-1KXA; Thu, 17 Jul 2025 13:51:07 +0000 Received: by mail-ua1-x92a.google.com with SMTP id a1e0cc1a2514c-881114808e4so577816241.3; Thu, 17 Jul 2025 06:51:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1752760265; x=1753365065; 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=OFoZFsmVBgIgOnRb6v56ZyJVL3iVN9nED2Us643BX3E=; b=iUzNWGS5qcmCdTRMeiCwdF7MkTOom+N3g6zIWIHIvufJTQSjbwhQU3FUAjkGxnPOAI UYQAsKmXcKUacmwOaDWu5lPiEIyEK9JGJcXu111SEZuNBAHqN5fEnRUjZdYfaXA0nxJV +ffAtSd4FKFnb5DzUa0fU0zprlqpA6YYz/fovXnyJdY7PuIWnMscDUxxj4DznDBCodlJ /OsbXJnXVH0Q2wQFNVBHXwotqfrUZAmxjMYvbP2EqrdYTyhHB0xscpmrBb7u+uxixw4i 1p+BzvKifggSECYRPCJx27FpS/1pUEV2gwqnlSEbJbK5e3k/nTRCcghSqX/uwVt/NN3K U+UA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752760265; x=1753365065; 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=OFoZFsmVBgIgOnRb6v56ZyJVL3iVN9nED2Us643BX3E=; b=pW+/C5HpzlzUdLDRMzh7976lmU2kvKE7cPiwoZpFt6cM47S2+rrqz62zcBjDyqyX+9 +LoAQhs99VGLKGoSiBtyJf0LDP0FS/q3W5JLuxyFaH4g4O2xvblQuYFWg/wEs+E9NPll yID+eDfY+fi1BtsfnisfgNeu12xfPTmNjlru/ZYYNVx20xPTGSXzZ1OB0gZFy0z7y80P dQwvrIzqQ9N8JkJVBV1wpjxrEf5YxlYxw5yhj5GJ/eJDZxDNsKNs1jNqpPdcNtxx1TP4 ProeqU98jwUNyHFQ+usiLRbCLe8c0Yc9CZCzlT0M/Eov+i1pRvFs/brab47JxFNYBxov Xxpw== X-Forwarded-Encrypted: i=1; AJvYcCVqDBYwWYRfYp7BdqS7P2XCfw2xO14XeRbXygcgYoNv46TgQ864mJH4VXAi4S0JYzYgcjatD9QMvpECN3pSMmqY@lists.infradead.org, AJvYcCX8RL8Bnq22Iq91IE6UYcPkdmxS4qTY7NQOT6YPFXNkVvAPI4Pt2qOlMd2t06nQP3jMFU66oeyGucekOU36xzI=@lists.infradead.org X-Gm-Message-State: AOJu0YznENbcWNiaIEf5br4ZETG2BJovOVc+BdX+wMK7Ut0BlJmXAqqU NzhDStdNoxsC4MpnnqLnac/jGbFLvLfybq5iRwfEjs1xYdSFJM2Eu8oT X-Gm-Gg: ASbGncsCHr5rnh8ooabkWgvUjsnYyRKBMjn3418y5rybN3isUc9y23UhLhGbY4FsPQx 4N2IloOJick2qMPyX3aSqtvGm8wanNZnJ+gMOPFM/6UXKx3DAFoLOrn1t+KWHioZwRf9E5YodWI BFdLNMe1W+k7E/Y7Ujn5DRXOsTVOzKsrXHTG7ivVIROToK+vilEY6u4BCON9yJWMEPWG+FsiLs2 eWd7O417B9nqCDfwxwDEBqEKfyLfy1n8FX+sEkhOKY1XQ0U2COrNmLzc7KbokVtJA0J5/cH/rcz GgYKRojrffUTqf/q6pbBAvdcafH7KsLgVK2mA8mqrB58appo6XGs52hn49Xeh2ybzvUtBz1/+Xm nVaCV6CoCxg== X-Google-Smtp-Source: AGHT+IGzgyrDUgDH08RDqZ3hkrbd5Lom3WMZY7KIBjhCX4qRVfQkKF54K0pt01hz0j8j+3pC5nv9qg== X-Received: by 2002:a05:6102:4421:b0:4e7:dbd2:4604 with SMTP id ada2fe7eead31-4f8999bcbeamr4068557137.17.1752760264477; Thu, 17 Jul 2025 06:51:04 -0700 (PDT) Received: from geday ([2804:7f2:800b:2246::dead:c001]) by smtp.gmail.com with ESMTPSA id ada2fe7eead31-4f62faf5ec1sm2853884137.23.2025.07.17.06.51.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Jul 2025 06:51:03 -0700 (PDT) Date: Thu, 17 Jul 2025 10:50:49 -0300 From: Geraldo Nascimento To: Manivannan Sadhasivam Cc: Shawn Lin , linux-rockchip@lists.infradead.org, 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 Subject: Re: [RFC PATCH v3 2/3] PCI: rockchip-host: Retry link training on failure without PERST# Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250717_065106_371527_1FBD0C57 X-CRM114-Status: GOOD ( 23.10 ) 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 T24gVGh1LCBKdWwgMTcsIDIwMjUgYXQgMDU6NTk6MzJQTSArMDUzMCwgTWFuaXZhbm5hbiBTYWRo YXNpdmFtIHdyb3RlOgo+IE9uIE1vbiwgSnVuIDIzLCAyMDI1IGF0IDA4OjQ0OjQ5QU0gR01ULCBH ZXJhbGRvIE5hc2NpbWVudG8gd3JvdGU6Cj4gPiBPbiBNb24sIEp1biAyMywgMjAyNSBhdCAwNToy OTo0NkFNIC0wNjAwLCBNYW5pdmFubmFuIFNhZGhhc2l2YW0gd3JvdGU6Cj4gPiA+IE9uIFR1ZSwg SnVuIDEwLCAyMDI1IGF0IDA0OjA1OjQwUE0gLTAzMDAsIEdlcmFsZG8gTmFzY2ltZW50byB3cm90 ZToKPiA+ID4gPiArcmVpbml0Ogo+ID4gPiAKPiA+ID4gU28gdGhpcyByZWluaXQgcGFydCBvbmx5 IHNraXBzIHRoZSBQRVJTVCMgYXNzZXJ0LCBidXQgY2FsbHMKPiA+ID4gcm9ja2NoaXBfcGNpZV9p bml0X3BvcnQoKSB3aGljaCByZXNldHMgdGhlIFJvb3QgUG9ydCBpbmNsdWRpbmcgUEhZLiBJIGRv bid0Cj4gPiA+IHRoaW5rIGl0IGlzIHNhZmUgdG8gZG8gaXQgaWYgUEVSU1QjIGlzIHdpcmVkLgo+ ID4gCj4gPiBJIGRvbid0IHVuZGVyc3RhbmQsIGNvdWxkIHlvdSBiZSBhIGJpdCBtb3JlIHZlcmJv c2Ugb24gd2h5IGRvIHlvdQo+ID4gdGhpbmsgdGhpcyBpcyBkYW5nZXJvdXM/Cj4gPiAKPiAKPiBX aGVuIHRoZSBSb290IFBvcnQgYW5kIFBIWSBnZXRzIHJlc2V0LCB0aGVyZSBpcyBhIGdvb2QgY2hh bmNlIHRoYXQgdGhlIHJlZmNsawo+IHdvdWxkIGFsc28gYmUgY3V0b2ZmLiBTbyBpZiB0aGF0IGhh cHBlbnMgd2l0aG91dCBQRVJTVCMgYXNzZXJ0LCB0aGVuIHRoZSBkZXZpY2UKPiBoYXMgbm8gY2hh bmNlIHRvIGNsZWFuIGl0cyBzdGF0ZSBtYWNoaW5lLiBJZiB0aGUgZGV2aWNlIGdldHMgaXRzIG93 biByZWZjbGssCj4gdGhlbiBpdCBpcyBhIGRpZmZlcmVudCBzdG9yeSwgYnV0IHdlIHNob3VsZCBu b3QgbWFrZSBhc3N1bXB0aW9ucy4KCkhpIE1hbmksIHRoYW5rIHlvdSBmb3IgeW91ciB0aW1lIHNw ZW50IGxvb2tpbmcgaW50byB0aGlzIQoKSSdtIG5vdCBzdXJlIGlmIHRoZSBmb2xsb3dpbmcgaW5m b3JtYXRpb24gaGVscHMsIGJ1dCBwYXRjaCAyIG9mIHRoaXMKc2VyaWVzIGRpc2FibGVzIHRoZSBQ Q0llIDMuM1YgYWx3YXlzLW9uL2Jvb3Qtb24gdGhyb3VnaCBEVC4gVGhhdCB3YXMKbm90IGluY2lk ZW50YWwsIGFuZCBpbiBmYWN0IGl0IGlzIHJlcXVpcmVkIGZvciBwYXRjaCAxIHRvIHdvcmsuCgpU aGVuLCBpZiB5b3UgZm9sbG93IHRoZSBwcm9wb3NlZCBjb2RlIGNoYW5nZSwgeW91IHdpbGwgc2Vl IHRoYXQgcG93ZXIKaXMgZWZmZWN0aXZlbHkgY3V0IHZpYSBkaXNhYmxpbmcgdGhlIHBvd2VyIHJl Z3VsYXRvcnMsIGV2ZW4gYmVmb3JlCmRpc2FibGluZyB0aGUgY2xvY2tzLiBTbyB0aGVyZSdzIGVm ZmVjdGl2ZWx5IHplcm8gY2hhbmNlIG9mIGNvcnJ1cHRpbmcKdGhlIGVuZHBvaW50IGRldmljZSBz dGF0ZSBtYWNoaW5lLCBzaW5jZSB0aGUgZGV2aWNlIGlzIHBvd2VyLWN5Y2xlZC4KCldoaWxlIEkg dW5kZXJzdGFuZCB3ZSBzaG91bGQgbm90IG1ha2UgYXNzdW1wdGlvbnMgb24ga2VybmVsIHdvcmss IGFuZAp0aGF0IHRoZSBwYXRjaCBpcyB1bm1lcmdlYWJsZSBvbiBpdHMgY3VycmVudCBmb3JtIChp dCdzIGEgZ29kZGFtbiBoYWNrKSwKaXQgZG9lcyBlbXBpcmljYWxseSBhbGxldmlhdGUgYSB2ZXJ5 IHJlYWwgcmVwb3J0LCB0aGF0IG9mIGtub3duLWdvb2QKd29ya2luZyBkZXZpY2VzIHJlZnVzaW5n IHRvIGNvb3BlcmF0ZSB3aXRoIFJvY2tjaGlwLUlQIFBDSWUuCgpJIGFncmVlIHdlIHNob3VsZCB3 YWl0IG9uIFNoYXduIExpbidzIGZlZWRiYWNrLgoKVGhhbmsgeW91LApHZXJhbGRvIE5hc2NpbWVu dG8KCj4gCj4gLSBNYW5pCj4gCj4gLS0gCj4g4K6u4K6j4K6/4K614K6j4K+N4K6j4K6p4K+NIOCu muCupOCuvuCumuCuv+CuteCuruCvjQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KTGludXgtcm9ja2NoaXAgbWFpbGluZyBsaXN0CkxpbnV4LXJvY2tjaGlw QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9s aXN0aW5mby9saW51eC1yb2NrY2hpcAo=