This is a note to let you know that I've just added the patch titled drm/i915/bios: parse DDI ports also for CHV for HDMI DDC pin and DP AUX channel 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-i915-bios-parse-ddi-ports-also-for-chv-for-hdmi-ddc-pin-and-dp-aux-channel.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 <stable@xxxxxxxxxxxxxxx> know about it. >From ea850f64c2722278f150dc11de2141baeb24211c Mon Sep 17 00:00:00 2001 From: Jani Nikula <jani.nikula@xxxxxxxxx> Date: Thu, 28 Sep 2017 11:21:57 +0300 Subject: drm/i915/bios: parse DDI ports also for CHV for HDMI DDC pin and DP AUX channel MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Jani Nikula <jani.nikula@xxxxxxxxx> commit ea850f64c2722278f150dc11de2141baeb24211c upstream. While technically CHV isn't DDI, we do look at the VBT based DDI port info for HDMI DDC pin and DP AUX channel. (We call these "alternate", but they're really just something that aren't platform defaults.) In commit e4ab73a13291 ("drm/i915: Respect alternate_ddc_pin for all DDI ports") Ville writes, "IIRC there may be CHV system that might actually need this." I'm not sure why there couldn't be even more platforms that need this, but start conservative, and parse the info for CHV in addition to DDI. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100553 Reported-by: Marek Wilczewski <mw@xxxxxxx> Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/d0815082cb98487618429b62414854137049b888.1506586821.git.jani.nikula@xxxxxxxxx (cherry picked from commit 348e4058ebf53904e817eec7a1b25327143c2ed2) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/intel_bios.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -1219,7 +1219,7 @@ static void parse_ddi_ports(struct drm_i { enum port port; - if (!HAS_DDI(dev_priv)) + if (!HAS_DDI(dev_priv) && !IS_CHERRYVIEW(dev_priv)) return; if (!dev_priv->vbt.child_dev_num) Patches currently in stable-queue which might be from jani.nikula@xxxxxxxxx are queue-4.9/drm-i915-bios-parse-ddi-ports-also-for-chv-for-hdmi-ddc-pin-and-dp-aux-channel.patch queue-4.9/drm-i915-edp-get-the-panel-power-off-timestamp-after-panel-is-off.patch