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 B17EEC433EF for ; Sat, 19 Mar 2022 12:40:31 +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-Type: Content-Transfer-Encoding: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=onvElIy3MX5eRUTctL/8LO6lkqdvOYK6GON5EtrArmA=; b=Qsuk2kBntDzNkG wUX6ohLDk2mYn/l7OSIJx6HGEelDSwhMx212u8sku88LhLi9UH4WxkiZv5NJ+Z+iJzVoxZsZq3tuz QJmhe/4AbVY9VwG6cSdrKO0EDaADU4FyO6P154oVH8SDBvZcToxbBXJ9v4lQyIepKIMkb+BTrigl2 T/sOFxA+5NvxXnypJjb/HjfsCfyVhs9m5bXZ2zxyTO6/PI/QMOnE1OWeq6QGHAm2l0jq9es2KJMiQ CO4RCxksttpr3fj50ckOSXu7ePbB5livXhjDkuzocRAw0gIZESmbOP01T8jOynlQN9/1RIyzMpUIi HxV6o7UtfDZ9gniGTJjg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nVYNX-003mvh-Ck; Sat, 19 Mar 2022 12:40:19 +0000 Received: from imap2.colo.codethink.co.uk ([78.40.148.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nVYNT-003mv8-Ms for linux-riscv@lists.infradead.org; Sat, 19 Mar 2022 12:40:17 +0000 Received: from cpc152649-stkp13-2-0-cust121.10-2.cable.virginm.net ([86.15.83.122] helo=[192.168.0.21]) by imap2.colo.codethink.co.uk with esmtpsa (Exim 4.92 #3 (Debian)) id 1nVYNP-0001Oy-P6; Sat, 19 Mar 2022 12:40:11 +0000 Message-ID: <9cc22be4-abba-ef75-a340-af7afb08f480@codethink.co.uk> Date: Sat, 19 Mar 2022 12:40:10 +0000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.6.2 Subject: Re: [V3] PCI: fu740: Drop to 2.5GT/s to fix initial device probing on some boards Content-Language: en-GB To: Palmer Dabbelt Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, bhelgaas@google.com, robh@kernel.org, lorenzo.pieralisi@arm.com, greentime.hu@sifive.com, Paul Walmsley References: From: Ben Dooks Organization: Codethink Limited. In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220319_054015_776448_B9D9B46B X-CRM114-Status: GOOD ( 30.11 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org T24gMTgvMDMvMjAyMiAyMzowMywgUGFsbWVyIERhYmJlbHQgd3JvdGU6Cj4gT24gRnJpLCAxOCBN YXIgMjAyMiAwODoyNDozMCBQRFQgKC0wNzAwKSwgYmVuLmRvb2tzQGNvZGV0aGluay5jby51ayB3 cm90ZToKPj4gVGhlIGZ1NzQwIFBDSWUgY29yZSBkb2VzIG5vdCBwcm9iZSBhbnkgZGV2aWNlcyBv biB0aGUgU2lGaXZlIFVubWF0Y2hlZAo+PiBib2FyZCB3aXRob3V0IHRoaXMgZml4IChvciBoYXZp bmcgVS1Cb290IGV4cGxpY2l0bHkgc3RhcnQgdGhlIFBDSWUgdmlhCj4+IGVpdGhlciBib290LXNj cmlwdCBvciB1c2VyIGNvbW1hbmQpLiBUaGUgZml4IGlzIHRvIHN0YXJ0IHRoZSBsaW5rIGF0Cj4+ IDIuNUdUL3Mgc3BlZWRzIGFuZCBvbmNlIHRoZSBsaW5rIGlzIHVwIHRoZW4gY2hhbmdlIHRoZSBt YXhpbXVtIHNwZWVkIGJhY2sKPj4gdG8gdGhlIGRlZmF1bHQuCj4+Cj4+IFRoZSBVLUJvb3QgZHJp dmVyIGNsYWltcyB0byBzZXQgdGhlIGxpbmstc3BlZWQgdG8gMi41R1QvcyB0byBnZXQgdGhlIAo+ PiBwcm9iZQo+PiB0byB3b3JrIChhbmQgVS1Cb290IGRvZXMgcHJpbnQgbGluayB1cCBhdCAyLjVH VC9zKSBpbiB0aGUgZm9sbG93aW5nIGNvZGU6Cj4+IGh0dHBzOi8vc291cmNlLmRlbnguZGUvdS1i b290L3UtYm9vdC8tL2Jsb2IvbWFzdGVyL2RyaXZlcnMvcGNpL3BjaWVfZHdfc2lmaXZlLmM/aWQ9 djIwMjIuMDEjTDI3MSAKPj4KPj4KPj4gU2lnbmVkLW9mZi1ieTogQmVuIERvb2tzIDxiZW4uZG9v a3NAY29kZXRoaW5rLmNvLnVrPgo+PiAtLSAKPiAKPiBBICItLSIgdHJpZ2dlcnMgc29tZSBtYWls IGhhbmRsZXMgdG8gdGhpbmsgdGhlIHJlc3Qgb2YgdGhpcyBpcyBhIAo+IHNpZ25hdHVyZSwgZ2l0 IGZvbGtzIHVzdWFsbHkgdXNlIGEgIi0tLSIgdG8gaW5kaWNhdGUgYSBjb21tZW50IHRoYXQgCj4g c2hvdWxkbid0IGJlIHBhcnQgb2Ygd2hhdCdzIGV2ZW50dWFsbHkgbWVyZ2VkIChsaWtlIHRoaXMg Y2hhbmdlbG9nIHN0dWZmKS4KPiAKPj4gTm90ZSwgdGhpcyBwYXRjaCBoYXMgaGFkIHNpZ25pZmlj YW50IHJlLXdvcmsgc2luY2UgdGhlIHByZXZpb3VzIDQKPj4gc2V0cywgaW5jbHVkaW5nIHRyeWlu ZyB0byBmaXggc3R5bGUsIG1lc3NhZ2UsIHJlbGlhbmNlIG9uIHRoZSBVLUJvb3QKPj4gZml4IGFu ZCB0aGUgY29tbWVudHMgYWJvdXQgdXNhZ2Ugb2YgTElOS19DQVAgYW5kIHJlc2VydmVkIGZpZWxk cy4KPj4KPj4gdjI6Cj4+IC0gZml4IGlzc3VlcyB3aXRoIEdlbjEvMi41R1RzCj4+IC0gdXBkYXRl ZCBjb21tZW50IG9uIHRoZSBpbml0aWFsIHByb2JlCj4+IC0gcnVuIHRlc3RzIHdpdGggYm90aCB1 bmluaXRpYWxpc2VkIGFuZCBpbml0aWFsc2VkIHBjaWUgZnJvbSB1Ym9vdAo+PiAtLS0KPj4gwqBk cml2ZXJzL3BjaS9jb250cm9sbGVyL2R3Yy9wY2llLWZ1NzQwLmMgfCA1MiArKysrKysrKysrKysr KysrKysrKysrKystCj4+IMKgMSBmaWxlIGNoYW5nZWQsIDUxIGluc2VydGlvbnMoKyksIDEgZGVs ZXRpb24oLSkKPj4KPj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvcGNpL2NvbnRyb2xsZXIvZHdjL3Bj aWUtZnU3NDAuYyAKPj4gYi9kcml2ZXJzL3BjaS9jb250cm9sbGVyL2R3Yy9wY2llLWZ1NzQwLmMK Pj4gaW5kZXggODQyYjcyMDJiOTZlLi5lY2FjMDM2NDE3OGEgMTAwNjQ0Cj4+IC0tLSBhL2RyaXZl cnMvcGNpL2NvbnRyb2xsZXIvZHdjL3BjaWUtZnU3NDAuYwo+PiArKysgYi9kcml2ZXJzL3BjaS9j b250cm9sbGVyL2R3Yy9wY2llLWZ1NzQwLmMKPj4gQEAgLTE4MSwxMCArMTgxLDYwIEBAIHN0YXRp YyBpbnQgZnU3NDBfcGNpZV9zdGFydF9saW5rKHN0cnVjdCBkd19wY2llIAo+PiAqcGNpKQo+IAo+ IElzIHRoZXJlIGFuIGVycmF0YT/CoCBJSVVDIHRoaXMgd2lsbCB0cmlnZ2VyIHRoZSB3b3JrYXJv dW5kIG9uIGFsbCAKPiBGVTc0MHMsIGJ1dCBmcm9tIHRoZSBkZXNjcmlwdGlvbiBpdCBzZWVtcyBs aWtlIG1vcmUgb2YgYSBib2FyZCBidWcgdGhhbiAKPiBhIGNoaXAgYnVnLsKgIFRoZSBkaXN0aW5j dGlvbiBkb2Vzbid0IHJlYWxseSBtYXR0ZXIsIGFzIHRoZXJlJ3Mgb25seSBvbmUgCj4gYm9hcmQg Zm9yIHRoaXMgY2hpcCAoYW5kIEknbSBhc3N1bWluZyB0aGF0J2xsIGFsd2F5cyBiZSB0aGUgY2Fz ZSksIGJ1dCAKPiBpZiB0aGVyZSdzIGFuIGVycmF0YSAob3IgYW55IHdheSB0aGlzIGlzIGRvY3Vt ZW50ZWQpIGl0IG1pZ2h0IG1ha2UgCj4gdGhpbmdzIGEgYml0IGVhc2llciB0byBzb3J0IG91dCBp ZiB3ZSBlbmQgdXAgd2l0aCBhbm90aGVyIHNpbWlsYXIgCj4gY2hpcC9ib2FyZC4KPiAKPiBFaXRo ZXIgd2F5Cj4gCj4gQWNrZWQtYnk6IFBhbG1lciBEYWJiZWx0IDxwYWxtZXJAcml2b3NpbmMuY29t Pgo+IAo+IEknbSBhc3N1bWluZyB5b3UsIG9yIHNvbWVvbmUgZWxzZSwgaGFzIHRlc3RlZCB0aGlz IG9uIHRoZSBib2FyZD/CoCBJJ20gCj4gcHJldHR5IHN1cmUgSSd2ZSBnb3Qgb25lIGx5aW5nIGFy b3VuZCBzb21ld2hlcmUsIGJ1dCBJIGRvbid0IHJlZ3VsYXJseSAKPiB1c2UgaXQuwqAgSSBjYW4g ZHVzdCBpdCBvZmYgaWYgbm9ib2R5IGVsc2UgaGFzIHRyaWVkIHRoaXMsIGJ1dCBoYXBweSB0byAK PiBhdm9pZCB0aGUgbmVlZCB0byBkbyBzby4KCgpJJ3ZlIGJlZW4gdHJ5aW5nIHRoaXMgb24gbXkg b3duIFVubWF0Y2hlZCBib2FyZCwgd2hlcmUgSSBvZnRlbiB1c2UKbmV0d29yayBib290LiBXZSBo YXZlIGFsc28gdGVzdGVkIHdpdGggYSBuZXctaXNoIFUtQm9vdCAoMjAyMi4wMSBJCnRoaW5rKSB3 aXRoIGJvdGggInBjaSBlbnVtIiBhbmQgbm90LiBJdCBoYXMgYmVlbiBvbiBvdXIgdGVzdCBib2Fy ZApmb3Igb3ZlciBhIHdlZWsgd2l0aG91dCBhbiBpc3N1ZS4KCkkgd2lsbCBoYXZlIGEgbG9vayBm b3IgdjQgYWJvdXQgY2hhbmdpbmcgdGhlIFdBUk5fT04oKSB0byBzb21ldGhpbmcKbW9yZSB1c2Vm dWwuCgoKLS0gCkJlbiBEb29rcwkJCQlodHRwOi8vd3d3LmNvZGV0aGluay5jby51ay8KU2VuaW9y IEVuZ2luZWVyCQkJCUNvZGV0aGluayAtIFByb3ZpZGluZyBHZW5pdXMKCmh0dHBzOi8vd3d3LmNv ZGV0aGluay5jby51ay9wcml2YWN5Lmh0bWwKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2IG1haWxpbmcgbGlzdApsaW51eC1yaXNjdkBs aXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlz dGluZm8vbGludXgtcmlzY3YK