Patch "drm/amdgpu: adjust default display clock" has been added to the 4.11-stable tree

Patch "drm/amdgpu: adjust default display clock" has been added to the 4.11-stable tree

[gregkh]

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

    drm/amdgpu: adjust default display clock

to the 4.11-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-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 52b482b0f4fd6d5267faf29fe91398e203f3c230 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
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 <alexander.deucher@amd.com>

commit 52b482b0f4fd6d5267faf29fe91398e203f3c230 upstream.

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
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c |    4 ++++
 1 file changed, 4 insertions(+)

--- 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(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 alexander.deucher@amd.com are

queue-4.11/drm-radeon-add-a-px-quirk-for-another-k53tk-variant.patch
queue-4.11/drm-amdgpu-atom-fix-ps-allocation-size-for-enabledisppowergating.patch
queue-4.11/drm-amdgpu-add-polaris12-did.patch
queue-4.11/drm-amdgpu-adjust-default-display-clock.patch
queue-4.11/drm-radeon-add-a-quirk-for-toshiba-satellite-l20-183.patch