This is a note to let you know that I've just added the patch titled
drm/i915: Disable DC states around GMBUS on GLK
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: drm-i915-disable-dc-states-around-gmbus-on-glk.patch and it can be found in the queue-4.15 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 156961ae7bdf6feb72778e8da83d321b273343fd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= ville.syrjala@linux.intel.com Date: Fri, 8 Dec 2017 23:37:36 +0200 Subject: drm/i915: Disable DC states around GMBUS on GLK MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
From: Ville Syrjälä ville.syrjala@linux.intel.com
commit 156961ae7bdf6feb72778e8da83d321b273343fd upstream.
Prevent the DMC from destroying GMBUS transfers on GLK. GMBUS lives in PG1 so DC off is all we need.
Cc: stable@vger.kernel.org Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20171208213739.16388-1-ville.s... Reviewed-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/i915/intel_runtime_pm.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -1844,6 +1844,7 @@ void intel_display_power_put(struct drm_ CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS | \ BIT_ULL(POWER_DOMAIN_MODESET) | \ BIT_ULL(POWER_DOMAIN_AUX_A) | \ + BIT_ULL(POWER_DOMAIN_GMBUS) | \ BIT_ULL(POWER_DOMAIN_INIT))
static const struct i915_power_well_ops i9xx_always_on_power_well_ops = {
Patches currently in stable-queue which might be from ville.syrjala@linux.intel.com are
queue-4.15/drm-i915-update-watermark-state-correctly-in-sanitize_watermarks.patch queue-4.15/drm-i915-disable-dc-states-around-gmbus-on-glk.patch