Attachment 45820 Details for Bug 36197 – possible fix

[patch] possible fix

0001-drm-radeon-kms-pll-tweaks-for-r7xx.patch (text/plain), 1.46 KB, created by Alex Deucher on 2011-04-19 07:57:19 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Alex Deucher

Created: 2011-04-19 07:57:19 UTC

Size: 1.46 KB

patch

obsolete

>From 78a05f76758074b0a059aad2580abb9b49a0eb5c Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexdeucher@gmail.com>
>Date: Tue, 19 Apr 2011 10:55:06 -0400
>Subject: [PATCH] drm/radeon/kms: pll tweaks for r7xx
>
>Prefer min m to max p only on pre-r7xx asics.
>
>Fixes:
>https://bugs.freedesktop.org/show_bug.cgi?id=36197
>
>Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
>Cc: stable@kernel.org
>---
> drivers/gpu/drm/radeon/atombios_crtc.c |    6 +-----
> 1 files changed, 1 insertions(+), 5 deletions(-)
>
>diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
>index 9d516a8..529a3a7 100644
>--- a/drivers/gpu/drm/radeon/atombios_crtc.c
>+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
>@@ -532,10 +532,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
> 		else
> 			pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
> 
>-		if ((rdev->family == CHIP_R600) ||
>-		    (rdev->family == CHIP_RV610) ||
>-		    (rdev->family == CHIP_RV630) ||
>-		    (rdev->family == CHIP_RV670))
>+		if (rdev->family < CHIP_RV770)
> 			pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
> 	} else {
> 		pll->flags |= RADEON_PLL_LEGACY;
>@@ -565,7 +562,6 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
> 			if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
> 				if (ss_enabled) {
> 					if (ss->refdiv) {
>-						pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
> 						pll->flags |= RADEON_PLL_USE_REF_DIV;
> 						pll->reference_div = ss->refdiv;
> 						if (ASIC_IS_AVIVO(rdev))
>-- 
>1.7.1.1
>

Actions: View | Splinter Review

Attachments on bug 36197: 45568 | 45569 | 45820

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.