From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nathan Ciobanu Subject: Re: [PATCH v3] drm/i915/dp: Give up link training clock recovery after 10 failed attempts Date: Mon, 16 Jul 2018 16:23:23 -0700 Message-ID: <20180716232323.GA19088@nc-new> References: <1531764885-18185-1-git-send-email-nathan.d.ciobanu@linux.intel.com> <20180716223458.GB2324@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7BA9A6E23B for ; Mon, 16 Jul 2018 23:30:38 +0000 (UTC) Content-Disposition: inline In-Reply-To: <20180716223458.GB2324@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Rodrigo Vivi Cc: intel-gfx@lists.freedesktop.org, dhinakaran.pandiyan@intel.com, marc.herbert@intel.com List-Id: intel-gfx@lists.freedesktop.org T24gTW9uLCBKdWwgMTYsIDIwMTggYXQgMDM6MzQ6NThQTSAtMDcwMCwgUm9kcmlnbyBWaXZpIHdy b3RlOgo+IE9uIE1vbiwgSnVsIDE2LCAyMDE4IGF0IDExOjE0OjQ1QU0gLTA3MDAsIE5hdGhhbiBD aW9iYW51IHdyb3RlOgo+ID4gTGltaXQgdGhlIGxpbmsgdHJhaW5pbmcgY2xvY2sgcmVjb3Zlcnkg bG9vcCB0byAxMCBmYWlsZWQgYXR0ZW1wdHMgYXQKPiA+IExBTkV4X0NSX0RPTkUgcGVyIERQIDEu NCBzcGVjIHNlY3Rpb24gMy41LjEuMi4yLgo+IAo+IFRoYW5rcy4uLiBzbyB0aGlzIG1hZGUgbWUg bG9vayB0byBEUCAxLjMgYW5kIERQIDEuNCBkaWZmZXJlbmNlcyBoZXJlLgo+IEFyZSB3ZSBhbHJl YWR5IGFkZHJlc3NpbmcgYWxsIG5ldyBjb25kaXRpb25zPwo+IAo+IEkgd29uZGVyIGlmIHRoYXQg c2hvdWxkIGJlIGF0IGRybSBsZXZlbC4KPiAKPiBJIG5vdGljZWQgdGhhdCBvbmUgZGlmZmVyZW5j ZSwgMTAwdXMgd2FpdCBkaWZmZXJlbmNlIGlzIGFscmVhZHkKPiBhZGRyZXNzZWQgdGhlcmUgYXQg ZHJtIGxldmVsLi4uCj4gCj4gPiBTb21lIFVTQi1DIE1TVCBodWJzCj4gPiBjYXVzZSB1cyB0byBn ZXQgc3R1Y2sgaW4gdGhpcyBsb29wIGluZGVmaW5pdGVseSByZXF1ZXN0aW5nCj4gPiAKPiA+ICAg ICB2b2x0YWdlIHN3aW5nOiAwLCBwcmUtZW1waGFzaXMgbGV2ZWw6IDIKPiA+ICAgICB2b2x0YWdl IHN3aW5nOiAxLCBwcmUtZW1waGFzaXMgbGV2ZWw6IDIKPiA+ICAgICB2b2x0YWdlIHN3aW5nOiAw LCBwcmUtZW1waGFzaXMgbGV2ZWw6IDMKPiA+IAo+ID4gb3ZlciBhbmQgb3ZlcjogbWF4X3Zzd2lu ZyBpcyBuZXZlciByZWFjaGVkLCBkcm1fZHBfY2xvY2tfcmVjb3Zlcnlfb2soKQo+ID4gbmV2ZXIg cmV0dXJucyB0cnVlIGFuZCB2b2x0YWdlX3RyaWVzIGFsd2F5cyBnZXRzIHJlc2V0IHRvIDEuIFRo ZSBkcml2ZXIKPiA+IHNlbmRzIHRob3NlIHZhbHVlcyB0byB0aGUgaHViIGJ1dCB0aGUgaHViIGtl ZXBzIHJlcXVlc3RpbmcgbmV3IHZhbHVlcwo+ID4gZXZlcnkgdGltZSBpbiB0aGUgcGF0dGVybiBz aG93biBhYm92ZS4KPiA+IAo+ID4gQ2hhbmdlcyBpbiB2MjoKPiA+ICAgICAtIHVwZGF0ZWQgY29t bWl0IG1lc3NhZ2UgKERLLCBNYW5hc2kpCj4gPiAgICAgLSBkZWZpbmVkIERQX0RQMTRfTUFYX0NS X1RSSUVTIChNYXJjKQo+ID4gICAgIC0gbWFkZSB0aGUgbG9vcCBpdGVyYXRlIGZvciBtYXggMTAg dGltZXMgKFJvZHJpZ28sIE1hcmMpCj4gPiAKPiA+IENoYW5nZXMgaW4gdjM6Cj4gPiAgICAgLSBj aGFuZ2VkIGVycm9yIG1lc3NhZ2UgdG8gdXNlIERQX0RQMTRfTUFYX0NSX1RSSUVTCj4gPiAKPiA+ IFNpZ25lZC1vZmYtYnk6IE5hdGhhbiBDaW9iYW51IDxuYXRoYW4uZC5jaW9iYW51QGxpbnV4Lmlu dGVsLmNvbT4KPiA+IC0tLQo+ID4gIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2RwX2xpbmtf dHJhaW5pbmcuYyB8IDcgKysrKystLQo+ID4gIGluY2x1ZGUvZHJtL2RybV9kcF9oZWxwZXIuaCAg ICAgICAgICAgICAgICAgICB8IDEgKwo+ID4gIDIgZmlsZXMgY2hhbmdlZCwgNiBpbnNlcnRpb25z KCspLCAyIGRlbGV0aW9ucygtKQo+ID4gCj4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJt L2k5MTUvaW50ZWxfZHBfbGlua190cmFpbmluZy5jIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50 ZWxfZHBfbGlua190cmFpbmluZy5jCj4gPiBpbmRleCA0ZGE2ZTMzYzdmYTEuLjRiZmJhNjVjNDMx YyAxMDA2NDQKPiA+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2RwX2xpbmtfdHJh aW5pbmcuYwo+ID4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHBfbGlua190cmFp bmluZy5jCj4gPiBAQCAtMTI5LDcgKzEyOSw3IEBAIHN0YXRpYyBib29sIGludGVsX2RwX2xpbmtf bWF4X3Zzd2luZ19yZWFjaGVkKHN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHApCj4gPiAgaW50ZWxf ZHBfbGlua190cmFpbmluZ19jbG9ja19yZWNvdmVyeShzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2Rw KQo+ID4gIHsKPiA+ICAJdWludDhfdCB2b2x0YWdlOwo+ID4gLQlpbnQgdm9sdGFnZV90cmllcywg bWF4X3Zzd2luZ190cmllczsKPiA+ICsJaW50IHZvbHRhZ2VfdHJpZXMsIG1heF92c3dpbmdfdHJp ZXMsIGNyX3RyaWVzOwo+ID4gIAl1aW50OF90IGxpbmtfY29uZmlnWzJdOwo+ID4gIAl1aW50OF90 IGxpbmtfYncsIHJhdGVfc2VsZWN0Owo+ID4gIAo+ID4gQEAgLTE3Miw3ICsxNzIsNyBAQCBzdGF0 aWMgYm9vbCBpbnRlbF9kcF9saW5rX21heF92c3dpbmdfcmVhY2hlZChzdHJ1Y3QgaW50ZWxfZHAg KmludGVsX2RwKQo+ID4gIAo+ID4gIAl2b2x0YWdlX3RyaWVzID0gMTsKPiA+ICAJbWF4X3Zzd2lu Z190cmllcyA9IDA7Cj4gPiAtCWZvciAoOzspIHsKPiA+ICsJZm9yIChjcl90cmllcyA9IDA7IGNy X3RyaWVzIDwgRFBfRFAxNF9NQVhfQ1JfVFJJRVM7ICsrY3JfdHJpZXMpIHsKPiAKPiBJIGtub3cg dGhhdCBJIHdhcyB0aGUgb24gdGhhdCBhc2tlZCB5b3UgdG8gbWFrZSB0aGlzIGdsb2JhbCBoZXJl LAo+IGJ1dCBqdXN0IG5vdyB3aXRoIGJldHRlciBzcGVjIHBvaW50ZXJzIGFuZCBkZWZpbml0aW9u IGlzIHRoYXQgSSBub3RpY2VkCj4gdGhhdCB0aGlzIGlzIG9ubHkgZm9yIERQIDEuNCBzcGVjIHdo aWxlIHRoaXMgY29kZSBoZXJlIHJ1bnMgZm9yIGFsbAo+IERQLi4uICBTbyB3ZSBuZWVkIHRvIGNo YW5nZSBpbiBhIHdheSB0aGF0IHdlIGNoZWNrIHRoZSBzcGVjIHZlcnNpb24gc29tZWhvdy4uLgpJ IHRoaW5rIHRoZSBidWcgaXMgd2l0aCB0aGlzIGluZmluaXRlIGxvb3Agd2hpY2ggaXMgYXQgdGhl IG1lcmN5IG9mIGFuIGV4dGVybmFsIGRldmljZQphbmQgaW4gbXkgY2FzZSBJIGhhdmUgdGhpcyBN U1QgaHViIHdoaWNoIGFwcGVhcnMgdG8gYmUgRFAgMS4yIHRoYXQgdHJpZ2dlcnMgdGhlCmluZmlu aXRlIGxvb3AgY2FzZS4gV2UgaGF2ZSB0byBsaW1pdCB0aGUgbnVtYmVyIG9mIGl0ZXJhdGlvbnMg YW5kCkRQIDEuNCBzcGVjIGhhcHBlbmVkIHRvIGZpeCB0aGlzIGlzc3VlLiBJJ20gYSBuZXdiaWUg aW4gdGhpcyBhcmVhIGJ1dCBpbiB0aGlzIGNhc2UKc2hvdWxkbid0IHdlIGFwcGx5IHRoZSBzYW1l IGNvdW50ZXIgdG8gYWxsIDw9ICJEUCAxLjQiIGRldmljZXM/CgotTmF0aGFuIAo+IAo+IGFuZCBw b3NzaWJseSBhdCBkcm0gbGV2ZWw/IQo+IAo+ID4gIAkJdWludDhfdCBsaW5rX3N0YXR1c1tEUF9M SU5LX1NUQVRVU19TSVpFXTsKPiA+ICAKPiA+ICAJCWRybV9kcF9saW5rX3RyYWluX2Nsb2NrX3Jl Y292ZXJ5X2RlbGF5KGludGVsX2RwLT5kcGNkKTsKPiA+IEBAIC0yMTYsNiArMjE2LDkgQEAgc3Rh dGljIGJvb2wgaW50ZWxfZHBfbGlua19tYXhfdnN3aW5nX3JlYWNoZWQoc3RydWN0IGludGVsX2Rw ICppbnRlbF9kcCkKPiA+ICAJCQkrK21heF92c3dpbmdfdHJpZXM7Cj4gPiAgCj4gPiAgCX0KPiA+ ICsJRFJNX0VSUk9SKCJGYWlsZWQgY2xvY2sgcmVjb3ZlcnkgJWQgdGltZXMsIGdpdmluZyB1cCFc biIsCj4gPiArCQkgIERQX0RQMTRfTUFYX0NSX1RSSUVTKTsKPiA+ICsJcmV0dXJuIGZhbHNlOwo+ ID4gIH0KPiA+ICAKPiA+ICAvKgo+ID4gZGlmZiAtLWdpdCBhL2luY2x1ZGUvZHJtL2RybV9kcF9o ZWxwZXIuaCBiL2luY2x1ZGUvZHJtL2RybV9kcF9oZWxwZXIuaAo+ID4gaW5kZXggYzAxNTY0OTkx YTlmLi4yMzAzYWQ4ZWQyNGUgMTAwNjQ0Cj4gPiAtLS0gYS9pbmNsdWRlL2RybS9kcm1fZHBfaGVs cGVyLmgKPiA+ICsrKyBiL2luY2x1ZGUvZHJtL2RybV9kcF9oZWxwZXIuaAo+ID4gQEAgLTgyMCw2 ICs4MjAsNyBAQAo+ID4gIAo+ID4gICNkZWZpbmUgRFBfRFAxM19EUENEX1JFViAgICAgICAgICAg ICAgICAgICAgMHgyMjAwCj4gPiAgI2RlZmluZSBEUF9EUDEzX01BWF9MSU5LX1JBVEUgICAgICAg ICAgICAgICAweDIyMDEKPiA+ICsjZGVmaW5lIERQX0RQMTRfTUFYX0NSX1RSSUVTICAgICAgICAg ICAgICAgIDEwCj4gPiAgCj4gPiAgI2RlZmluZSBEUF9EUFJYX0ZFQVRVUkVfRU5VTUVSQVRJT05f TElTVCAgICAweDIyMTAgIC8qIERQIDEuMyAqLwo+ID4gICMgZGVmaW5lIERQX0dUQ19DQVAJCQkJ CSgxIDw8IDApICAvKiBEUCAxLjMgKi8KPiA+IC0tIAo+ID4gMS45LjEKPiA+IAo+IApfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGlu ZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVl ZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK