From mboxrd@z Thu Jan 1 00:00:00 1970 From: deepak.s@linux.intel.com Subject: [PATCH v2] drm/i915: Drop WA to fix Voltage not getting dropped to Vmin when Gfx is power gated for latest VLV revision Date: Sat, 28 Jun 2014 11:26:11 +0530 Message-ID: <1403934971-3748-1-git-send-email-deepak.s@linux.intel.com> References: <539AEE01.1040208@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTP id 43B1C6E4BE for ; Thu, 26 Jun 2014 23:01:22 -0700 (PDT) In-Reply-To: <539AEE01.1040208@linux.intel.com> 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 List-Id: intel-gfx@lists.freedesktop.org From: Deepak S Workaround fixed in Latest VLV revision. Forcing Gfx clk up not needed, and Requesting the min freq should bring bring the voltage Vnn. v2: Drop WA for Latest VLV revision (Ville) Signed-off-by: Deepak S --- drivers/gpu/drm/i915/intel_pm.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index a90fdbd..6b6cfd4 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3212,6 +3212,14 @@ void gen6_set_rps(struct drm_device *dev, u8 val) */ static void vlv_set_rps_idle(struct drm_i915_private *dev_priv) { + struct drm_device *dev = dev_priv->dev; + + /* Latest VLV doesn't need Vnn WA*/ + if (dev->pdev->revision >= 0xd) { + valleyview_set_rps(dev_priv->dev, dev_priv->rps.min_freq_softlimit); + return; + } + /* * When we are idle. Drop to min voltage state. */ -- 1.9.1