X-Git-Url: http://git.monstr.eu/?p=linux-2.6-microblaze.git;a=blobdiff_plain;f=Documentation%2Fsound%2Fhd-audio%2Fnotes.rst;h=d118b6fe269b96cfdd21f4abce2d918694989a32;hp=cf4d7158af78367640f0d31c061badd3125ef9f8;hb=32b47072f319bb65e9afad59e78153d83496f1f5;hpb=2d9ad4cfaf4d32a64a4ed556e5bcab9121215026

diff --git a/Documentation/sound/hd-audio/notes.rst b/Documentation/sound/hd-audio/notes.rst
index cf4d7158af78..d118b6fe269b 100644
--- a/Documentation/sound/hd-audio/notes.rst
+++ b/Documentation/sound/hd-audio/notes.rst
@@ -215,6 +215,17 @@ There are a few special model option values:
 * when ``generic`` is passed, the codec-specific parser is skipped and
   only the generic parser is used.
 
+A new style for the model option that was introduced since 5.15 kernel
+is to pass the PCI or codec SSID in the form of ``model=XXXX:YYYY``
+where XXXX and YYYY are the sub-vendor and sub-device IDs in hex
+numbers, respectively.  This is a kind of aliasing to another device;
+when this form is given, the driver will refer to that SSID as a
+reference to the quirk table.  It'd be useful especially when the
+target quirk isn't listed in the model table.  For example, passing
+model=103c:8862 will apply the quirk for HP ProBook 445 G8 (which
+isn't found in the model table as of writing) as long as the device is
+handled equivalently by the same driver.
+
 
 Speaker and Headphone Output
 ----------------------------