From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Westerberg Subject: Re: Why is Thunderbolt 3 limited to 2.5 GT/s on Linux? Date: Fri, 28 Jun 2019 15:53:46 +0300 Message-ID: <20190628125346.GM2640@lahna.fi.intel.com> References: <91de711591780e83c70e8f61747725855f6dee99.camel@gmail.com> <20190628103204.GJ2640@lahna.fi.intel.com> <20190628113415.GL2640@lahna.fi.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2DB156E8E7 for ; Fri, 28 Jun 2019 12:53:50 +0000 (UTC) Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Timur =?iso-8859-1?Q?Krist=F3f?= Cc: "michael.jamet@intel.com" , "dri-devel@lists.freedesktop.org" List-Id: dri-devel@lists.freedesktop.org T24gRnJpLCBKdW4gMjgsIDIwMTkgYXQgMDI6MjE6MzZQTSArMDIwMCwgVGltdXIgS3Jpc3TDs2Yg d3JvdGU6Cj4gCj4gPiA+IFN1cmUsIHRob3VnaCBpbiB0aGlzIGNhc2UgMyBvZiB0aG9zZSBkb3du c3RyZWFtIHBvcnRzIGFyZSBub3QKPiA+ID4gZXhwb3NlZAo+ID4gPiBieSB0aGUgaGFyZHdhcmUs IHNvIGl0J3MgYSBiaXQgc3VycHJpc2luZyB0byBzZWUgdGhlbSB0aGVyZS4KPiA+IAo+ID4gVGhl eSBsZWFkIHRvIG90aGVyIHBlcmlwaGVyYWxzIG9uIHRoZSBUQlQgaG9zdCByb3V0ZXIgc3VjaCBh cyB0aGUgVEJUCj4gPiBjb250cm9sbGVyIGFuZCB4SENJLiBBbHNvIHRoZXJlIGFyZSB0d28gZG93 bnN0cmVhbSBwb3J0cyBmb3IKPiA+IGV4dGVuc2lvbgo+ID4gZnJvbSB3aGljaCB5b3UgZUdQVSBp cyB1c2luZyBvbmUuCj4gCj4gSWYgeW91IGxvb2sgYXQgdGhlIGRldmljZSB0cmVlIGZyb20gbXkg Zmlyc3QgZW1haWwsIHlvdSBjYW4gc2VlIHRoYXQKPiBib3RoIHRoZSBHUFUgYW5kIHRoZSBYSENJ IHVzZXMgdGhlIHNhbWUgcG9ydDogMDQ6MDQuMCAtIGluIGZhY3QgSSBjYW4KPiBldmVuIHJlbW92 ZSB0aGUgb3RoZXIgMyBwb3J0cyBmcm9tIHRoZSBzeXN0ZW0gd2l0aG91dCBhbnkgY29uc2VxdWVu Y2VzLgoKV2VsbCB0aGF0J3MgdGhlIGV4dGVuc2lvbiBQQ0llIGRvd25zdHJlYW0gcG9ydC4gVGhl IG90aGVyIG9uZSBpcwowNDowMS4wLgoKVHlwaWNhbGx5IDA0OjAwLjAgYW5kIDA0OjAwLjIgYXJl IHVzZWQgdG8gY29ubmVjdCBUQlQgKDA1OjAwLjApIGFuZCB4SENJCigzOTowMC4wKSBidXQgaW4g eW91ciBjYXNlIHlvdSBkb24ndCBzZWVtIHRvIGhhdmUgVVNCIDMgZGV2aWNlcwpjb25uZWN0ZWQg dG8gdGhhdCBzbyBpdCBpcyBub3QgcHJlc2VudC4gSWYgeW91IHBsdWcgaW4gVVNCLUMgZGV2aWNl Cihub24tVEJUKSB5b3Ugc2hvdWxkIHNlZSB0aGUgaG9zdCByb3V0ZXIgeEhDSSBhcHBlYXJpbmcg YXMgd2VsbC4KClRoaXMgaXMgcHJldHR5IHN0YW5kYXJkIHRvcG9sb2d5LgoKPiA+ID4gTGlrZSBJ IHNhaWQgdGhlIGRldmljZSByZWFsbHkgaXMgbGltaXRlZCB0byAyLjUgR1QvcyBldmVuIHRob3Vn aCBpdAo+ID4gPiBzaG91bGQgYmUgYWJsZSB0byBkbyA4IEdUL3MuCj4gPiAKPiA+IFRoZXJlIGlz IFRodW5kZXJib2x0IGxpbmsgYmV0d2VlbiB0aGUgaG9zdCByb3V0ZXIgKHlvdXIgaG9zdCBzeXN0 ZW0pCj4gPiBhbmQKPiA+IHRoZSBlR1BVIGJveC4gVGhhdCBsaW5rIGlzIG5vdCBsaW1pdGVkIHRv IDIuNSBHVC9zIHNvIGV2ZW4gaWYgdGhlCj4gPiBzbG90Cj4gPiBjbGFpbXMgaXQgaXMgUENJIGdl bjEgdGhlIGFjdHVhbCBiYW5kd2lkdGggY2FuIGJlIG11Y2ggaGlnaGVyIGJlY2F1c2UKPiA+IG9m Cj4gPiB0aGUgdmlydHVhbCBsaW5rLgo+IAo+IE5vdCBzdXJlIEkgdW5kZXJzdGFuZCBjb3JyZWN0 bHksIGFyZSB5b3Ugc2F5aW5nIHRoYXQgVEIzIGNhbiBkbyA0MAo+IEdiaXQvc2VjIGV2ZW4gdGhv dWdoIHRoZSBrZXJuZWwgdGhpbmtzIGl0IGNhbiBvbmx5IGRvIDggR2JpdCAvIHNlYz8KClllcyB0 aGUgUENJZSBzd2l0Y2ggdXBzdHJlYW0gcG9ydCAoM2E6MDAuMCkgaXMgY29ubmVjdGVkIGJhY2sg dG8gdGhlCmhvc3Qgcm91dGVyIG92ZXIgdmlydHVhbCBUaHVuZGVyYm9sdCA0MEdiL3MgbGluayBz byB0aGUgUENJZSBnZW4xIHNwZWVkcwppdCByZXBvcnRzIGRvIG5vdCByZWFsbHkgbWF0dGVyIGhl cmUgKHNhbWUgZ29lcyBmb3IgdGhlIGRvd25zdHJlYW0pLgoKVGhlIHRvcG9sb2d5IGxvb2tzIGxp a2UgYmVsbG93IGlmIEkgZ290IGl0IHJpZ2h0IGZyb20gdGhlIGxzcGNpIG91dHB1dDoKCiAgMDA6 MWMuNCAocm9vdCBwb3J0KSA4IEdUL3MgeCA0CiAgICBeCiAgICB8IHJlYWwgUENJZSBsaW5rCiAg ICB2CiAgMDM6MDAuMCAodXBzdHJlYW0gcG9ydCkgOCBHVC9zIHggNAogIDA0OjA0LjAgKGRvd25z dHJlYW0gcG9ydCkgMi41IEdUL3MgeCA0CiAgICBeCiAgICB8ICB2aXJ0dWFsIGxpbmsgNDAgR2Iv cwogICAgdgogIDNhOjAwLjAgKHVwc3RyZWFtIHBvcnQpIDIuNSBHVC9zIHggNAogIDNiOjAxLjAg KGRvd25zdHJlYW0gcG9ydCkgOCBHVC9zIHggNAogICAgXgogICAgfCByZWFsIFBDSWUgbGluawog ICAgdgogIDNjOjAwLjAgKGVHUFUpIDggR1QvcyB4IDQKCkluIG90aGVyIHdvcmRzIGFsbCB0aGUg cmVhbCBQQ0llIGxpbmtzIHJ1biBhdCBmdWxsIDggR1QvcyB4IDQgd2hpY2ggaXMKd2hhdCBpcyBl eHBlY3RlZCwgSSB0aGluay4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0 b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJp LWRldmVs