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Patch "drm/amdgpu: adjust default display clock" has been added to the 4.4-stable tree

PATCH [email protected] 1 participant 1 message Jun 26, 2017

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This is a note to let you know that I've just added the patch titled

drm/amdgpu: adjust default display clock

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
drm-amdgpu-adjust-default-display-clock.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 52b482b0f4fd6d5267faf29fe91398e203f3c230 Mon Sep 17 00:00:00 2001

From: Alex Deucher <[email protected]>
Date: Thu, 15 Jun 2017 11:12:28 -0400
Subject: drm/amdgpu: adjust default display clock
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Alex Deucher <[email protected]>

commit 52b482b0f4fd6d5267faf29fe91398e203f3c230 upstream.

Increase the default display clock on newer asics to accomodate some high res modes with really high refresh rates.

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c |    4 ++++
 1 file changed, 4 insertions(+)
drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c +4 -0
@@ -681,6 +681,10 @@ int amdgpu_atombios_get_clock_info(struc
 			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);

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/drm-radeon-add-a-px-quirk-for-another-k53tk-variant.patch queue-4.4/drm-amdgpu-atom-fix-ps-allocation-size-for-enabledisppowergating.patch queue-4.4/drm-amdgpu-adjust-default-display-clock.patch queue-4.4/drm-radeon-add-a-quirk-for-toshiba-satellite-l20-183.patch