From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: [PATCH] drm/i915/glk: limit pixel clock to 99% of cdclk workaround Date: Tue, 4 Apr 2017 11:15:53 +0300 Message-ID: <1491293753-12325-1-git-send-email-jani.nikula@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0D88F6E524 for ; Tue, 4 Apr 2017 08:16:12 +0000 (UTC) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org Cc: jani.nikula@intel.com, Ander Conselvan de Oliveira List-Id: intel-gfx@lists.freedesktop.org RnJvbTogTWFkaGF2IENoYXVoYW4gPG1hZGhhdi5jaGF1aGFuQGludGVsLmNvbT4KCkFzIHBlciBC U1BFQywgdmFsaWQgY2RjbGsgdmFsdWVzIGZvciBnbGsgYXJlIDc5LjIsIDE1OC40LCAzMTYuOCBN aHouClByYWN0aWNhbGx5IHdlIGNhbiBhY2hpdmUgb25seSA5OSUgb2YgdGhlc2UgY2RjbGsgdmFs dWVzIChIVyB0ZWFtCmNoZWNraW5nIG9uIHRoaXMpLiBTbyBjZGNsayBzaG91bGQgYmUgY2FsY3Vs YXRlZCBmb3IgdGhlIGdpdmVuIHBpeGNsayBhcwpwZXIgdGhhdCBvdGhlcndpc2UgaXQgbWF5IGxl YWQgdG8gc2NyZWVuIGNvcnJ1cHRpb24gZm9yIHNvbWUgc2NlbmFyaW9zLgoKdjI6IFJlYmFzZWQg dG8gbmV3IENETENLIGNvZGUgZnJhbWV3b3JrCnYzOiBBZGRyZXNzZWQgcmV2aWV3IGNvbW1lbnRz IGZyb20gQW5kZXIvSmFuaQogICAgLSBBZGQgY29tbWVudCBpbiBjb2RlIGFib3V0IDk5JSB1c2Fn ZSBvZiBDRENMSwogICAgLSBDYWxjdWxhdGUgbWF4IGRvdCBjbG9jayBhcyB3ZWxsIHdpdGggOTkl IGxpbWl0CnY0IGJ5IEphbmk6CiAgICAtIGRyb3Agc3VwZXJmbHVvdXMgd2hpdGVzcGFjZSBjaGFu Z2UKICAgIC0gcmV3cml0ZSBjb2RlIGNvbW1lbnRzIHRvIGNsYXJpZnkKCkNjOiBBbmRlciBDb25z ZWx2YW4gZGUgT2xpdmVpcmEgPGFuZGVyLmNvbnNlbHZhbi5kZS5vbGl2ZWlyYUBpbnRlbC5jb20+ CkNjOiBWaWxsZSBTeXJqw6Rsw6QgPHZpbGxlLnN5cmphbGFAbGludXguaW50ZWwuY29tPgpTaWdu ZWQtb2ZmLWJ5OiBNYWRoYXYgQ2hhdWhhbiA8bWFkaGF2LmNoYXVoYW5AaW50ZWwuY29tPgpTaWdu ZWQtb2ZmLWJ5OiBKYW5pIE5pa3VsYSA8amFuaS5uaWt1bGFAaW50ZWwuY29tPgotLS0KIGRyaXZl cnMvZ3B1L2RybS9pOTE1L2ludGVsX2NkY2xrLmMgfCAxNiArKysrKysrKysrKysrLS0tCiAxIGZp bGUgY2hhbmdlZCwgMTMgaW5zZXJ0aW9ucygrKSwgMyBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQg YS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9jZGNsay5jIGIvZHJpdmVycy9ncHUvZHJtL2k5 MTUvaW50ZWxfY2RjbGsuYwppbmRleCBkZDNhZDUyYjdkZmUuLjc2MzAxMGY4YWQ4OSAxMDA2NDQK LS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfY2RjbGsuYworKysgYi9kcml2ZXJzL2dw dS9kcm0vaTkxNS9pbnRlbF9jZGNsay5jCkBAIC0xMDcxLDkgKzEwNzEsMTUgQEAgc3RhdGljIGlu dCBieHRfY2FsY19jZGNsayhpbnQgbWF4X3BpeGNsaykKIAogc3RhdGljIGludCBnbGtfY2FsY19j ZGNsayhpbnQgbWF4X3BpeGNsaykKIHsKLQlpZiAobWF4X3BpeGNsayA+IDIgKiAxNTg0MDApCisJ LyoKKwkgKiBGSVhNRTogQXZvaWQgdXNpbmcgYSBwaXhlbCBjbG9jayB0aGF0IGlzIG1vcmUgdGhh biA5OSUgb2YgdGhlIGNkY2xrCisJICogYXMgYSB0ZW1wb3Jhcnkgd29ya2Fyb3VuZC4gVXNlIGEg aGlnaGVyIGNkY2xrIGluc3RlYWQuIChOb3RlIHRoYXQKKwkgKiBpbnRlbF9jb21wdXRlX21heF9k b3RjbGsoKSBsaW1pdHMgdGhlIG1heCBwaXhlbCBjbG9jayB0byA5OSUgb2YgbWF4CisJICogY2Rj bGsuKQorCSAqLworCWlmIChtYXhfcGl4Y2xrID4gRElWX1JPVU5EX1VQKDIgKiAxNTg0MDAgKiA5 OSwgMTAwKSkKIAkJcmV0dXJuIDMxNjgwMDsKLQllbHNlIGlmIChtYXhfcGl4Y2xrID4gMiAqIDc5 MjAwKQorCWVsc2UgaWYgKG1heF9waXhjbGsgPiBESVZfUk9VTkRfVVAoMiAqIDc5MjAwICogOTks IDEwMCkpCiAJCXJldHVybiAxNTg0MDA7CiAJZWxzZQogCQlyZXR1cm4gNzkyMDA7CkBAIC0xNjY0 LDcgKzE2NzAsMTEgQEAgc3RhdGljIGludCBpbnRlbF9jb21wdXRlX21heF9kb3RjbGsoc3RydWN0 IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2KQogCWludCBtYXhfY2RjbGtfZnJlcSA9IGRldl9w cml2LT5tYXhfY2RjbGtfZnJlcTsKIAogCWlmIChJU19HRU1JTklMQUtFKGRldl9wcml2KSkKLQkJ cmV0dXJuIDIgKiBtYXhfY2RjbGtfZnJlcTsKKwkJLyoKKwkJICogRklYTUU6IExpbWl0aW5nIHRv IDk5JSBhcyBhIHRlbXBvcmFyeSB3b3JrYXJvdW5kLiBTZWUKKwkJICogZ2xrX2NhbGNfY2RjbGso KSBmb3IgZGV0YWlscy4KKwkJICovCisJCXJldHVybiAyICogbWF4X2NkY2xrX2ZyZXEgKiA5OSAv IDEwMDsKIAllbHNlIGlmIChJTlRFTF9JTkZPKGRldl9wcml2KS0+Z2VuID49IDkgfHwKIAkJIElT X0hBU1dFTEwoZGV2X3ByaXYpIHx8IElTX0JST0FEV0VMTChkZXZfcHJpdikpCiAJCXJldHVybiBt YXhfY2RjbGtfZnJlcTsKLS0gCjIuMS40CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5m cmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0 aW5mby9pbnRlbC1nZngK