I have got an email that the patch fixing the issue has been added to
the 4.9-stable tree:

This is a note to let you know that I've just added the patch titled
    drm/radeon: drop verde dpm quirks

to the 4.9-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-radeon-drop-verde-dpm-quirks.patch
and it can be found in the queue-4.9 subdirectory.

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


>From 8a08403bcb39f5d0e733bcf59a8a74f16b538f6e Mon Sep 17 00:00:00 2001
From: Alex Deucher <[email protected]>
Date: Thu, 5 Jan 2017 12:39:01 -0500
Subject: drm/radeon: drop verde dpm quirks

From: Alex Deucher <[email protected]>

commit 8a08403bcb39f5d0e733bcf59a8a74f16b538f6e upstream.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=98897
https://bugs.launchpad.net/bugs/1651981

Acked-by: Edward O'Callaghan <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: Adrian Fiergolski <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 drivers/gpu/drm/radeon/si_dpm.c |   13 -------------
 1 file changed, 13 deletions(-)

--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -3008,19 +3008,6 @@ static void si_apply_state_adjust_rules(
                    (rdev->pdev->device == 0x6817) ||
                    (rdev->pdev->device == 0x6806))
                        max_mclk = 120000;
-       } else if (rdev->family == CHIP_VERDE) {
-               if ((rdev->pdev->revision == 0x81) ||
-                   (rdev->pdev->revision == 0x83) ||
-                   (rdev->pdev->revision == 0x87) ||
-                   (rdev->pdev->device == 0x6820) ||
-                   (rdev->pdev->device == 0x6821) ||
-                   (rdev->pdev->device == 0x6822) ||
-                   (rdev->pdev->device == 0x6823) ||
-                   (rdev->pdev->device == 0x682A) ||
-                   (rdev->pdev->device == 0x682B)) {
-                       max_sclk = 75000;
-                       max_mclk = 80000;
-               }
        } else if (rdev->family == CHIP_OLAND) {
                if ((rdev->pdev->revision == 0xC7) ||
                    (rdev->pdev->revision == 0x80) ||


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

queue-4.9/drm-amdgpu-update-si-kicker-smc-firmware.patch
queue-4.9/drm-amdgpu-drop-verde-dpm-quirks.patch
queue-4.9/drm-radeon-drop-verde-dpm-quirks.patch
queue-4.9/drm-radeon-update-smc-firmware-selection-for-si.patch


** Bug watch added: freedesktop.org Bugzilla #98897
   https://bugs.freedesktop.org/show_bug.cgi?id=98897

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