Attachment 95710 Details for Bug 76103 – [PATCH 1/3] drm/i915: Double the gen3 SR latency

[patch] [PATCH 1/3] drm/i915: Double the gen3 SR latency

0001-drm-i915-Double-the-gen3-SR-latency.patch (text/plain), 1.23 KB, created by Ville Syrjala on 2014-03-13 11:07:29 UTC

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Creator: Ville Syrjala

Created: 2014-03-13 11:07:29 UTC

Size: 1.23 KB

patch

obsolete

>From ddf5ca1cc0b4dcb96a2dd5cdd87622d632687ac0 Mon Sep 17 00:00:00 2001
>From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
>Date: Thu, 13 Mar 2014 11:32:44 +0200
>Subject: [PATCH 1/3] drm/i915: Double the gen3 SR latency
>MIME-Version: 1.0
>Content-Type: text/plain; charset=UTF-8
>Content-Transfer-Encoding: 8bit
>
>Gen4+ used 12usec as the memory latency value for self-refresh
>watermarks. Gen3 currently uses 6usec. Double the gen3 value
>to 12usec.
>
>Signed-off-by: Ville SyrjÃ¤lÃ¤ <ville.syrjala@linux.intel.com>
>---
> drivers/gpu/drm/i915/intel_pm.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
>index e1fc35a..3d09738 100644
>--- a/drivers/gpu/drm/i915/intel_pm.c
>+++ b/drivers/gpu/drm/i915/intel_pm.c
>@@ -1553,7 +1553,7 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc)
> 	/* Calc sr entries for one plane configs */
> 	if (HAS_FW_BLC(dev) && enabled) {
> 		/* self-refresh has much higher latency */
>-		static const int sr_latency_ns = 6000;
>+		static const int sr_latency_ns = 12000;
> 		const struct drm_display_mode *adjusted_mode =
> 			&to_intel_crtc(enabled)->config.adjusted_mode;
> 		int clock = adjusted_mode->crtc_clock;
>-- 
>1.8.3.2
>

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Attachments on bug 76103: 95693 | 95694 | 95710 | 95711 | 95712 | 95713 | 95715 | 95718 | 95724 | 95785 | 96446 | 96448 | 96743

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