From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Deucher Subject: Re: Why is Thunderbolt 3 limited to 2.5 GT/s on Linux? Date: Thu, 18 Jul 2019 09:50:44 -0400 Message-ID: References: <91de711591780e83c70e8f61747725855f6dee99.camel@gmail.com> <20190628103204.GJ2640@lahna.fi.intel.com> <20190628113415.GL2640@lahna.fi.intel.com> <627b7fff64edcba0f8d8b5ced79a351821c419c7.camel@gmail.com> <792d0f36-b8ae-bef9-3b07-95677637ba00@daenzer.net> <4ee5439cb01e355436d618f5d6f2e109410dc35e.camel@gmail.com> <1061c44a462961e3d67b075b81a14eb6155a12fd.camel@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com [IPv6:2a00:1450:4864:20::32a]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5FCF06E3C9 for ; Thu, 18 Jul 2019 13:50:58 +0000 (UTC) Received: by mail-wm1-x32a.google.com with SMTP id s3so25681852wms.2 for ; Thu, 18 Jul 2019 06:50:58 -0700 (PDT) In-Reply-To: <1061c44a462961e3d67b075b81a14eb6155a12fd.camel@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: =?UTF-8?Q?Timur_Krist=C3=B3f?= Cc: "michael.jamet@intel.com" , =?UTF-8?Q?Michel_D=C3=A4nzer?= , Mika Westerberg , "dri-devel@lists.freedesktop.org" List-Id: dri-devel@lists.freedesktop.org T24gVGh1LCBKdWwgMTgsIDIwMTkgYXQgNToxMSBBTSBUaW11ciBLcmlzdMOzZiA8dGltdXIua3Jp c3RvZkBnbWFpbC5jb20+IHdyb3RlOgo+Cj4gT24gRnJpLCAyMDE5LTA3LTA1IGF0IDA5OjM2IC0w NDAwLCBBbGV4IERldWNoZXIgd3JvdGU6Cj4gPiBPbiBUaHUsIEp1bCA0LCAyMDE5IGF0IDY6NTUg QU0gTWljaGVsIETDpG56ZXIgPG1pY2hlbEBkYWVuemVyLm5ldD4KPiA+IHdyb3RlOgo+ID4gPiBP biAyMDE5LTA3LTAzIDE6MDQgcC5tLiwgVGltdXIgS3Jpc3TDs2Ygd3JvdGU6Cj4gPiA+ID4gPiA+ IFRoZXJlIG1heSBiZSBvdGhlciBmYWN0b3JzLCB5ZXMuIEkgY2FuJ3Qgb2ZmZXIgYSBnb29kCj4g PiA+ID4gPiA+IGV4cGxhbmF0aW9uCj4gPiA+ID4gPiA+IG9uCj4gPiA+ID4gPiA+IHdoYXQgZXhh Y3RseSBpcyBoYXBwZW5pbmcsIGJ1dCBpdCdzIHByZXR0eSBjbGVhciB0aGF0IGFtZGdwdQo+ID4g PiA+ID4gPiBjYW4ndAo+ID4gPiA+ID4gPiB0YWtlCj4gPiA+ID4gPiA+IGZ1bGwgYWR2YW50YWdl IG9mIHRoZSBUQjMgbGluaywgc28gaXQgc2VlbWVkIGxpa2UgYSBnb29kIGlkZWEKPiA+ID4gPiA+ ID4gdG8KPiA+ID4gPiA+ID4gc3RhcnQKPiA+ID4gPiA+ID4gaW52ZXN0aWdhdGluZyB0aGlzIGZp cnN0Lgo+ID4gPiA+ID4KPiA+ID4gPiA+IFllYWgsIGFjdHVhbGx5IGl0IHdvdWxkIGJlIGNvbnNp c3RlbnQgd2l0aCB+MTYtMzIgS0IKPiA+ID4gPiA+IGdyYW51bGFyaXR5Cj4gPiA+ID4gPiB0cmFu c2ZlcnMgYmFzZWQgb24geW91ciBtZWFzdXJlbWVudHMgYWJvdmUsIHdoaWNoIGlzIHBsYXVzaWJs ZS4KPiA+ID4gPiA+IFNvCj4gPiA+ID4gPiBtYWtpbmcgc3VyZSB0aGF0IHRoZSBkcml2ZXIgZG9l c24ndCBhcnRpZmljaWFsbHkgbGltaXQgdGhlIFBDSWUKPiA+ID4gPiA+IGJhbmR3aWR0aCBtaWdo dCBpbmRlZWQgaGVscC4KPiA+ID4gPgo+ID4gPiA+IENhbiB5b3UgcG9pbnQgbWUgdG8gdGhlIHBs YWNlIHdoZXJlIGFtZGdwdSBkZWNpZGVzIHRoZSBQQ0llIGxpbmsKPiA+ID4gPiBzcGVlZD8KPiA+ ID4gPiBJJ2QgbGlrZSB0byB0cnkgdG8gdHdlYWsgaXQgYSBsaXR0bGUgYml0IHRvIHNlZSBpZiB0 aGF0IGhlbHBzIGF0Cj4gPiA+ID4gYWxsLgo+ID4gPgo+ID4gPiBJJ20gbm90IHN1cmUgb2ZmaGFu ZCwgQWxleCBvciBhbnlvbmU/Cj4gPgo+ID4gYW1kZ3B1X2RldmljZV9nZXRfcGNpZV9pbmZvKCkg aW4gYW1kZ3B1X2RldmljZS5jLgo+Cj4KPiBIaSBBbGV4LAo+Cj4gSSB0b29rIGEgbG9vayBhdCBh bWRncHVfZGV2aWNlX2dldF9wY2llX2luZm8oKSBhbmQgZm91bmQgdGhhdCBpdCB1c2VzCj4gcGNp ZV9iYW5kd2lkdGhfYXZhaWxhYmxlIHRvIGRldGVybWluZSB0aGUgY2FwYWJpbGl0aWVzIG9mIHRo ZSBQQ0llCj4gcG9ydC4gSG93ZXZlciwgcGNpZV9iYW5kd2lkdGhfYXZhaWxhYmxlIGdpdmVzIHlv dSBvbmx5IHRoZSBjdXJyZW50Cj4gYmFuZHdpZHRoIGFzIHNldCBieSB0aGUgUENJZSBsaW5rIHN0 YXR1cyByZWdpc3Rlciwgbm90IHRoZSBtYXhpbXVtCj4gY2FwYWJpbGl0eS4KPgo+IEkgdGhpbmsg c29tZXRoaW5nIGFsb25nIHRoZXNlIGxpbmVzIHdvdWxkIGZpeCBpdDoKPiBodHRwczovL3Bhc3Rl YmluLmNvbS9Mc2NFTUtNYwo+Cj4gSXQgc2VlbXMgdG8gbWUgdGhhdCB0aGUgUENJZSBjYXBhYmls aXRpZXMgYXJlIG9ubHkgdXNlZCBpbiBhIGZldyBwbGFjZXMKPiBpbiB0aGUgY29kZSwgc28gdGhp cyBwYXRjaCBmaXhlcyBwcF9kcG1fcGNpZS4gSG93ZXZlciBpdCBkb2Vzbid0IGFmZmVjdAo+IHRo ZSBhY3R1YWwgcGVyZm9ybWFuY2UuCj4KPiBXaGF0IGRvIHlvdSB0aGluaz8KCkkgdGhpbmsgd2Ug d2FudCB0aGUgY3VycmVudCBiYW5kd2lkdGguICBUaGUgR1BVIGNhbiBvbmx5IGNvbnRyb2wgdGhl CnNwZWVkIG9mIGl0cyBsb2NhbCBsaW5rLiAgSWYgdGhlcmUgYXJlIHVwc3RyZWFtIGxpbmtzIHRo YXQgYXJlIHNsb3dlcgp0aGFuIGl0cyBsb2NhbCBsaW5rLCBpdCBkb2Vzbid0IG1ha2Ugc2Vuc2Ug dG8gcnVuIHRoZSBsb2NhbCBsaW5rIGF0CmZhc3RlciBzcGVlZHMgYmVjYXVzZSBpdCB3aWxsIGJ1 cm4gZXh0cmEgcG93ZXIgaXQgd2lsbCBqdXN0IHJ1biBpbnRvIGEKYm90dGxlbmVjayBhdCB0aGUg bmV4dCBsaW5rLiAgSW4gZ2VuZXJhbCwgbW9zdCBzeXN0ZW1zIG5lZ290aWF0ZSB0aGUKZmFzdGVz dCBsaW5rIHNwZWVkIHN1cHBvcnRlZCBieSBib3RoIGVuZHMgYXQgcG93ZXIgdXAuCgpBbGV4Cgo+ Cj4gQmVzdCByZWdhcmRzLAo+IFRpbQo+Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZy ZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3Rp bmZvL2RyaS1kZXZlbA==