Attachment 130900 Details for Bug 98046 – possible fix

[patch] possible fix

0001-drm-radeon-adjust-pll-flags-for-RV770.patch (text/plain), 1.10 KB, created by Alex Deucher on 2017-04-18 14:30:30 UTC

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Creator: Alex Deucher

Created: 2017-04-18 14:30:30 UTC

Size: 1.10 KB

patch

obsolete

>From 3cc2ebbca98038256c55a6db3e006dbcca1391fe Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexander.deucher@amd.com>
>Date: Tue, 18 Apr 2017 10:25:41 -0400
>Subject: [PATCH] drm/radeon: adjust pll flags for RV770
>
>May fix pll stability issues on some early RV770.
>
>bug: https://bugs.freedesktop.org/show_bug.cgi?id=98046
>
>Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>---
> drivers/gpu/drm/radeon/atombios_crtc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
>index 3c492a0..8b88597 100644
>--- a/drivers/gpu/drm/radeon/atombios_crtc.c
>+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
>@@ -583,7 +583,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
> 		else
> 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
> 
>-		if (rdev->family < CHIP_RV770)
>+		if (rdev->family <= CHIP_RV770) /* set flag for parts up to DCE3.1 */
> 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
> 		/* use frac fb div on APUs */
> 		if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev) || ASIC_IS_DCE8(rdev))
>-- 
>2.5.5
>

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Attachments on bug 98046: 127000 | 127003 | 130894 | 130899 | 130900 | 130908 | 140762 | 140763 | 140768

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