From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clint Taylor Subject: Re: [PATCH] drm/i915/chv: Remove DPIO force latency causing interpair skew issue Date: Thu, 09 Apr 2015 14:01:39 -0700 Message-ID: <5526E8B3.2000008@intel.com> References: <1428599825-1000-1-git-send-email-clinton.a.taylor@intel.com> <20150409202044.GV17410@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id 557416E035 for ; Thu, 9 Apr 2015 14:04:10 -0700 (PDT) In-Reply-To: <20150409202044.GV17410@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: =?windows-1252?Q?Ville_Syrj=E4l=E4?= Cc: Intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gMDQvMDkvMjAxNSAwMToyMCBQTSwgVmlsbGUgU3lyasOkbMOkIHdyb3RlOgo+IE9uIFRodSwg QXByIDA5LCAyMDE1IGF0IDEwOjE3OjA1QU0gLTA3MDAsIGNsaW50b24uYS50YXlsb3JAaW50ZWwu Y29tIHdyb3RlOgo+PiBGcm9tOiBDbGludCBUYXlsb3IgPGNsaW50b24uYS50YXlsb3JAaW50ZWwu Y29tPgo+Pgo+PiBMYXRlc3QgdmVyc2lvbiBvZiB0aGUgIkNIViBEUElPIHByb2dyYW1taW5nIG5v dGVzIiBubyBsb25nZXIgcmVxdWlyZXMgd3JpdGVzCj4+IHRvIFRYIERXIDExIHRvIGZpeCBhICsy VUkgaW50ZXJwYWlyIHNrZXcgaXNzdWUuIFRoZSBjdXJyZW50IGNvZGUgZnJvbQo+PiBBcHJpbCAy MDE0IHdhcyBhY3R1YWxseSBjYXVzaW5nIGFkZGl0aW9uYWwgc2tldyBpc3N1ZXMgYmV0d2VlbiBh bGwKPj4gVE1EUyBwYWlycy4KPj4KPj4gU2lnbmVkLW9mZi1ieTogQ2xpbnQgVGF5bG9yIDxjbGlu dG9uLmEudGF5bG9yQGludGVsLmNvbT4KPj4gLS0tCj4+ICAgZHJpdmVycy9ncHUvZHJtL2k5MTUv aW50ZWxfaGRtaS5jIHwgICAgNSAtLS0tLQo+PiAgIDEgZmlsZSBjaGFuZ2VkLCA1IGRlbGV0aW9u cygtKQo+Pgo+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRtaS5j IGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRtaS5jCj4+IGluZGV4IDI2MjIyZTYuLjNj ZWYzMjYgMTAwNjQ0Cj4+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hkbWkuYwo+ PiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9oZG1pLmMKPj4gQEAgLTE1MTUsMTEg KzE1MTUsNiBAQCBzdGF0aWMgdm9pZCBjaHZfaGRtaV9wcmVfZW5hYmxlKHN0cnVjdCBpbnRlbF9l bmNvZGVyICplbmNvZGVyKQo+Pgo+PiAgIAkvKiBQcm9ncmFtIFR4IGxhdGVuY3kgb3B0aW1hbCBz ZXR0aW5nICovCj4+ICAgCWZvciAoaSA9IDA7IGkgPCA0OyBpKyspIHsKPj4gLQkJLyogU2V0IHRo ZSBsYXRlbmN5IG9wdGltYWwgYml0ICovCj4+IC0JCWRhdGEgPSAoaSA9PSAxKSA/IDB4MCA6IDB4 NjsKPj4gLQkJdmx2X2RwaW9fd3JpdGUoZGV2X3ByaXYsIHBpcGUsIENIVl9UWF9EVzExKGNoLCBp KSwKPj4gLQkJCQlkYXRhIDw8IERQSU9fRlJDX0xBVEVOQ1lfU0hGSVQpOwo+PiAtCj4KPiBPbiBh IGh1Y2ggSSB3ZW50IGFuZCB0cmllZCB0aGlzIHNhbWUgdHJlYXRtZW50IG9uIGludGVsX2RwLmMg YW5kIGl0Cj4gZml4ZXMgdGhlIHJlbWFpbmluZyBsaW5rIHRyYWluaW5nIGlzc3VlcyBbMV0gSSd2 ZSBiZWVuIHNlZWluZyBcby8KPiBJIHN0aWxsIG5lZWQgdG8gdHJ5IHdpdGggdGhlIG90aGVyIERQ IGRpc3BsYXkgdGhhdCB3YXMgaGF2aW5nIHRoZXNlCj4gcHJvYmxlbXMsIGJ1dCB0aGF0J2xsIGhh dmUgdG8gd2FpdCB1bnRpbCB0b21vcnJvdy4KPgo+IFNvIHBsZWFzZSByZXNwaW4gdGhpcyB3aXRo IHRoZSBzYW1lIGNoYW5nZSBtYWRlIHRvIGludGVsX2RwLmMgKHNvbWVvbmUKPiBzaG91bGQgcmVh bGx5IGVsaW1pbmF0ZSB0aGUgY29kZSBkdXBsaWNhdGlvbiB3ZSBoYXZlIGdvaW5nIG9uIHRoZXJl KSwgYW5kCj4gYXNzdW1pbmcgbXkgdGVzdCB3aXRoIHRoZSBvdGhlciBkaXNwbGF5IGdvZXMgYXMg d2VsbCBJIGNhbiB0aGVuIHBvc3QKPiBzb21lIERQSU8gbGFuZSBwb3dlciBnYXRpbmcgcGF0Y2hl cyB3aGljaCBJJ3ZlIGJlZW4gaG9sZGluZyBiYWNrIGJlY2F1c2UKPiB0aGV5IG1hZGUgdGhlIHBy b2JsZW0gd29yc2UuCj4KCnYyIHJlc3BpbiBoYXMgYmVlbiBzZW50LiBZb3Ugc2F2ZWQgbWUgbG90 cyBvZiB0aW1lIHRlc3RpbmcgdGhlIHNhbWUgCmNoYW5nZSBvbiBEUC4gSSB3aWxsIHByb2JhYmx5 IHN0aWxsIHB1dCBpdCBvbiBhIHNjb3BlIHRvIGNvbmZpcm0gdGhlIAppbXByb3ZlbWVudC4KCkkg ZGlkbid0IHRha2Ugb24gdGhlIGhpbnQgb2YgZml4aW5nIHRoZSBjb2RlIGR1cGxpY2F0aW9uLgoK LUNsaW50Cgo+IFsxXSBodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL2FyY2hpdmVzL2ludGVs LWdmeC8yMDE1LUZlYnJ1YXJ5LzA1OTg3Ny5odG1sCj4KPgo+PiAgIAkJLyogU2V0IHRoZSB1cGFy IGJpdCAqLwo+PiAgIAkJZGF0YSA9IChpID09IDEpID8gMHgwIDogMHgxOwo+PiAgIAkJdmx2X2Rw aW9fd3JpdGUoZGV2X3ByaXYsIHBpcGUsIENIVl9UWF9EVzE0KGNoLCBpKSwKPj4gLS0KPj4gMS43 LjkuNQo+Pgo+PiBfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f Xwo+PiBJbnRlbC1nZnggbWFpbGluZyBsaXN0Cj4+IEludGVsLWdmeEBsaXN0cy5mcmVlZGVza3Rv cC5vcmcKPj4gaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lu dGVsLWdmeAo+CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcK aHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=