From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [PATCH] drm/i915/chv: Remove DPIO force latency causing interpair skew issue Date: Thu, 9 Apr 2015 23:20:44 +0300 Message-ID: <20150409202044.GV17410@intel.com> References: <1428599825-1000-1-git-send-email-clinton.a.taylor@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id D25496E34D for ; Thu, 9 Apr 2015 13:20:49 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1428599825-1000-1-git-send-email-clinton.a.taylor@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: clinton.a.taylor@intel.com Cc: Intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gVGh1LCBBcHIgMDksIDIwMTUgYXQgMTA6MTc6MDVBTSAtMDcwMCwgY2xpbnRvbi5hLnRheWxv ckBpbnRlbC5jb20gd3JvdGU6Cj4gRnJvbTogQ2xpbnQgVGF5bG9yIDxjbGludG9uLmEudGF5bG9y QGludGVsLmNvbT4KPiAKPiBMYXRlc3QgdmVyc2lvbiBvZiB0aGUgIkNIViBEUElPIHByb2dyYW1t aW5nIG5vdGVzIiBubyBsb25nZXIgcmVxdWlyZXMgd3JpdGVzCj4gdG8gVFggRFcgMTEgdG8gZml4 IGEgKzJVSSBpbnRlcnBhaXIgc2tldyBpc3N1ZS4gVGhlIGN1cnJlbnQgY29kZSBmcm9tCj4gQXBy aWwgMjAxNCB3YXMgYWN0dWFsbHkgY2F1c2luZyBhZGRpdGlvbmFsIHNrZXcgaXNzdWVzIGJldHdl ZW4gYWxsCj4gVE1EUyBwYWlycy4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBDbGludCBUYXlsb3IgPGNs aW50b24uYS50YXlsb3JAaW50ZWwuY29tPgo+IC0tLQo+ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9p bnRlbF9oZG1pLmMgfCAgICA1IC0tLS0tCj4gIDEgZmlsZSBjaGFuZ2VkLCA1IGRlbGV0aW9ucygt KQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9oZG1pLmMgYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9oZG1pLmMKPiBpbmRleCAyNjIyMmU2Li4zY2VmMzI2 IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hkbWkuYwo+ICsrKyBi L2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hkbWkuYwo+IEBAIC0xNTE1LDExICsxNTE1LDYg QEAgc3RhdGljIHZvaWQgY2h2X2hkbWlfcHJlX2VuYWJsZShzdHJ1Y3QgaW50ZWxfZW5jb2RlciAq ZW5jb2RlcikKPiAgCj4gIAkvKiBQcm9ncmFtIFR4IGxhdGVuY3kgb3B0aW1hbCBzZXR0aW5nICov Cj4gIAlmb3IgKGkgPSAwOyBpIDwgNDsgaSsrKSB7Cj4gLQkJLyogU2V0IHRoZSBsYXRlbmN5IG9w dGltYWwgYml0ICovCj4gLQkJZGF0YSA9IChpID09IDEpID8gMHgwIDogMHg2Owo+IC0JCXZsdl9k cGlvX3dyaXRlKGRldl9wcml2LCBwaXBlLCBDSFZfVFhfRFcxMShjaCwgaSksCj4gLQkJCQlkYXRh IDw8IERQSU9fRlJDX0xBVEVOQ1lfU0hGSVQpOwo+IC0KCk9uIGEgaHVjaCBJIHdlbnQgYW5kIHRy aWVkIHRoaXMgc2FtZSB0cmVhdG1lbnQgb24gaW50ZWxfZHAuYyBhbmQgaXQKZml4ZXMgdGhlIHJl bWFpbmluZyBsaW5rIHRyYWluaW5nIGlzc3VlcyBbMV0gSSd2ZSBiZWVuIHNlZWluZyBcby8KSSBz dGlsbCBuZWVkIHRvIHRyeSB3aXRoIHRoZSBvdGhlciBEUCBkaXNwbGF5IHRoYXQgd2FzIGhhdmlu ZyB0aGVzZQpwcm9ibGVtcywgYnV0IHRoYXQnbGwgaGF2ZSB0byB3YWl0IHVudGlsIHRvbW9ycm93 LgoKU28gcGxlYXNlIHJlc3BpbiB0aGlzIHdpdGggdGhlIHNhbWUgY2hhbmdlIG1hZGUgdG8gaW50 ZWxfZHAuYyAoc29tZW9uZQpzaG91bGQgcmVhbGx5IGVsaW1pbmF0ZSB0aGUgY29kZSBkdXBsaWNh dGlvbiB3ZSBoYXZlIGdvaW5nIG9uIHRoZXJlKSwgYW5kCmFzc3VtaW5nIG15IHRlc3Qgd2l0aCB0 aGUgb3RoZXIgZGlzcGxheSBnb2VzIGFzIHdlbGwgSSBjYW4gdGhlbiBwb3N0CnNvbWUgRFBJTyBs YW5lIHBvd2VyIGdhdGluZyBwYXRjaGVzIHdoaWNoIEkndmUgYmVlbiBob2xkaW5nIGJhY2sgYmVj YXVzZQp0aGV5IG1hZGUgdGhlIHByb2JsZW0gd29yc2UuCgpbMV0gaHR0cDovL2xpc3RzLmZyZWVk ZXNrdG9wLm9yZy9hcmNoaXZlcy9pbnRlbC1nZngvMjAxNS1GZWJydWFyeS8wNTk4NzcuaHRtbAoK Cj4gIAkJLyogU2V0IHRoZSB1cGFyIGJpdCAqLwo+ICAJCWRhdGEgPSAoaSA9PSAxKSA/IDB4MCA6 IDB4MTsKPiAgCQl2bHZfZHBpb193cml0ZShkZXZfcHJpdiwgcGlwZSwgQ0hWX1RYX0RXMTQoY2gs IGkpLAo+IC0tIAo+IDEuNy45LjUKPiAKPiBfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwo+IEludGVsLWdmeCBtYWlsaW5nIGxpc3QKPiBJbnRlbC1nZnhAbGlz dHMuZnJlZWRlc2t0b3Aub3JnCj4gaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFu L2xpc3RpbmZvL2ludGVsLWdmeAoKLS0gClZpbGxlIFN5cmrDpGzDpApJbnRlbCBPVEMKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxp bmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVl ZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK