This is a note to let you know that I've just added the patch titled
drm/radeon: drop setting UPLL to sleep mode
to the 3.10-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-setting-upll-to-sleep-mode.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a17d4996e051e78d164989b894608cf37cd5110b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@xxxxxxx>
Date: Thu, 19 Feb 2015 09:40:28 +0100
Subject: drm/radeon: drop setting UPLL to sleep mode
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From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@xxxxxxx>
commit a17d4996e051e78d164989b894608cf37cd5110b upstream.
Just keep it working, seems to fix some PLL problems.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=73378
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/si.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -5704,8 +5704,7 @@ int si_set_uvd_clocks(struct radeon_devi
WREG32_P(CG_UPLL_FUNC_CNTL, UPLL_BYPASS_EN_MASK, ~UPLL_BYPASS_EN_MASK);
if (!vclk || !dclk) {
- /* keep the Bypass mode, put PLL to sleep */
- WREG32_P(CG_UPLL_FUNC_CNTL, UPLL_SLEEP_MASK, ~UPLL_SLEEP_MASK);
+ /* keep the Bypass mode */
return 0;
}
@@ -5721,8 +5720,7 @@ int si_set_uvd_clocks(struct radeon_devi
/* set VCO_MODE to 1 */
WREG32_P(CG_UPLL_FUNC_CNTL, UPLL_VCO_MODE_MASK, ~UPLL_VCO_MODE_MASK);
- /* toggle UPLL_SLEEP to 1 then back to 0 */
- WREG32_P(CG_UPLL_FUNC_CNTL, UPLL_SLEEP_MASK, ~UPLL_SLEEP_MASK);
+ /* disable sleep mode */
WREG32_P(CG_UPLL_FUNC_CNTL, 0, ~UPLL_SLEEP_MASK);
/* deassert UPLL_RESET */
Patches currently in stable-queue which might be from christian.koenig@xxxxxxx are
queue-3.10/drm-radeon-fix-drm_ioctl_radeon_cs-oops.patch
queue-3.10/drm-radeon-drop-setting-upll-to-sleep-mode.patch
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