Attachment 131983 Details for Bug 93826 – possible fix

[patch] possible fix

0001-drm-amdgpu-adjust-default-display-clock.patch (text/plain), 1.31 KB, created by Alex Deucher on 2017-06-15 15:16:28 UTC

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Creator: Alex Deucher

Created: 2017-06-15 15:16:28 UTC

Size: 1.31 KB

patch

obsolete

>From f486c520dc518fa5a9c1ba2d32f3d66684509039 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexander.deucher@amd.com>
>Date: Thu, 15 Jun 2017 11:12:28 -0400
>Subject: [PATCH] drm/amdgpu: adjust default display clock
>
>Increase the default display clock on newer asics to
>accomodate some high res modes with really high refresh
>rates.
>
>bug: https://bugs.freedesktop.org/show_bug.cgi?id=93826
>Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>Cc: stable@vger.kernel.org
>---
> drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
>diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
>index 1cf78f4..1e8e112 100644
>--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
>+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
>@@ -693,6 +693,10 @@ int amdgpu_atombios_get_clock_info(struct amdgpu_device *adev)
> 			DRM_INFO("Changing default dispclk from %dMhz to 600Mhz\n",
> 				 adev->clock.default_dispclk / 100);
> 			adev->clock.default_dispclk = 60000;
>+		} else if (adev->clock.default_dispclk <= 60000) {
>+			DRM_INFO("Changing default dispclk from %dMhz to 625Mhz\n",
>+				 adev->clock.default_dispclk / 100);
>+			adev->clock.default_dispclk = 62500;
> 		}
> 		adev->clock.dp_extclk =
> 			le16_to_cpu(firmware_info->info_21.usUniphyDPModeExtClkFreq);
>-- 
>2.5.5
>

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Attachments on bug 93826: 121218 | 121219 | 121220 | 121221 | 121222 | 121223 | 121224 | 121225 | 121226 | 121227 | 121228 | 131983 | 132066 | 132082

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