public inbox for intel-gfx@lists.freedesktop.org
 help / color / mirror / Atom feed
From: ville.syrjala@linux.intel.com
To: intel-gfx@lists.freedesktop.org
Cc: "Bruno Prémont" <bonbons@linux-vserver.org>
Subject: [PATCH 3/5] drm/i915: Increase gen2 vco frequency limit to 1512 MHz
Date: Mon,  9 Dec 2013 18:54:15 +0200	[thread overview]
Message-ID: <1386608057-20866-4-git-send-email-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <1386608057-20866-1-git-send-email-ville.syrjala@linux.intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Bruno Prémont has a 855 machine with a 1400x1050 LVDS screen.

The VBT mode is as follows:
0:"1400x1050" 0 108000 1400 1416 1528 1688 1050 1051 1054 1066 0x8 0xa

The BIOS uses the following DPLL settings:
DPLL = 0x90020000
FP0 = 0x2140e
FP1 = 0x21207

That puts the BIOS generated VCO frequency at 1512 MHz, which is
higher than the 1400 MHz limit we have currently.

Let's bump the VCO limit to 1512 MHz and see what happens.

Cc: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index f1d3a8f..434cdde 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -90,7 +90,7 @@ intel_fdi_link_freq(struct drm_device *dev)
 
 static const intel_limit_t intel_limits_i8xx_dac = {
 	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 930000, .max = 1400000 },
+	.vco = { .min = 930000, .max = 1512000 },
 	.n = { .min = 2, .max = 16 },
 	.m = { .min = 96, .max = 140 },
 	.m1 = { .min = 18, .max = 26 },
@@ -103,7 +103,7 @@ static const intel_limit_t intel_limits_i8xx_dac = {
 
 static const intel_limit_t intel_limits_i8xx_dvo = {
 	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 930000, .max = 1400000 },
+	.vco = { .min = 930000, .max = 1512000 },
 	.n = { .min = 2, .max = 16 },
 	.m = { .min = 96, .max = 140 },
 	.m1 = { .min = 18, .max = 26 },
@@ -116,7 +116,7 @@ static const intel_limit_t intel_limits_i8xx_dvo = {
 
 static const intel_limit_t intel_limits_i8xx_lvds = {
 	.dot = { .min = 25000, .max = 350000 },
-	.vco = { .min = 930000, .max = 1400000 },
+	.vco = { .min = 930000, .max = 1512000 },
 	.n = { .min = 2, .max = 16 },
 	.m = { .min = 96, .max = 140 },
 	.m1 = { .min = 18, .max = 26 },
-- 
1.8.3.2

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

  parent reply	other threads:[~2013-12-09 16:55 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-09 16:54 [PATCH 0/5] drm/i915: Gen2 PLL fixes ville.syrjala
2013-12-09 16:54 ` [PATCH 1/5] drm/i915: Extract p2 divider correctly for gen2 LVDS dual channel ville.syrjala
2013-12-09 16:54 ` [PATCH 2/5] drm/i915: Change N divider minimum from 3 to 2 for gen2 ville.syrjala
2013-12-09 16:54 ` ville.syrjala [this message]
2013-12-09 16:54 ` [PATCH 4/5] drm/i915: Fix 66 MHz LVDS SSC freq " ville.syrjala
2013-12-09 16:54 ` [PATCH 5/5] drm/i915: Decrease gen2 vco frequency minimum to 908 MHz ville.syrjala
2013-12-10 11:52 ` [PATCH 0/5] drm/i915: Gen2 PLL fixes Bruno Prémont
2013-12-10 12:19   ` Ville Syrjälä
2013-12-10 12:33     ` Bruno Prémont
2013-12-10 12:47       ` Ville Syrjälä
2013-12-11 10:12         ` Daniel Vetter

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1386608057-20866-4-git-send-email-ville.syrjala@linux.intel.com \
    --to=ville.syrjala@linux.intel.com \
    --cc=bonbons@linux-vserver.org \
    --cc=intel-gfx@lists.freedesktop.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox