From patchwork Thu Nov 9 02:26:59 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hui Wang X-Patchwork-Id: 836150 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) by ozlabs.org (Postfix) with ESMTP id 3yXRrr3wPgz9t3H; Thu, 9 Nov 2017 13:27:24 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1eCcYq-0000eS-QM; Thu, 09 Nov 2017 02:27:20 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.86_2) (envelope-from ) id 1eCcYo-0000ch-Kf for kernel-team@lists.ubuntu.com; Thu, 09 Nov 2017 02:27:18 +0000 Received: from [111.196.72.202] (helo=localhost.localdomain) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.76) (envelope-from ) id 1eCcYn-0001vo-Ma; Thu, 09 Nov 2017 02:27:18 +0000 From: Hui Wang To: kernel-team@lists.ubuntu.com Subject: [linux-oem][PATCH 3/3] UBUNTU: SAUCE: drm/i915: set minimum CD clock to twice the BCLK. Date: Thu, 9 Nov 2017 10:26:59 +0800 Message-Id: <1510194419-6150-4-git-send-email-hui.wang@canonical.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1510194419-6150-1-git-send-email-hui.wang@canonical.com> References: <1510194419-6150-1-git-send-email-hui.wang@canonical.com> X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: timo.aaltonen@canonical.com MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" From: Abhay Kumar BugLink: http://bugs.launchpad.net/bugs/1731091 [The patch is picked from https://patchwork.freedesktop.org/patch/184778/] In glk when device boots with only 1366x768 panel, HDA codec doesn't comeup. This result in no audio forever as cdclk is < 96Mhz. This chagne will ensure CD clock to be twice of BCLK. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102937 Signed-off-by: Abhay Kumar --- drivers/gpu/drm/i915/intel_cdclk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c index d329118..b156032 100644 --- a/drivers/gpu/drm/i915/intel_cdclk.c +++ b/drivers/gpu/drm/i915/intel_cdclk.c @@ -1786,7 +1786,7 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state) /* According to BSpec, "The CD clock frequency must be at least twice * the frequency of the Azalia BCLK." and BCLK is 96 MHz by default. */ - if (crtc_state->has_audio && INTEL_GEN(dev_priv) >= 9) + if (INTEL_GEN(dev_priv) >= 9) min_cdclk = max(2 * 96000, min_cdclk); if (min_cdclk > dev_priv->max_cdclk_freq) {