]> Gentwo Git Trees - linux/.git/commit
drm/bridge: lt9211: Drop check for last nibble of version register
authorMarek Vasut <marek.vasut@mailbox.org>
Sat, 11 Oct 2025 10:59:53 +0000 (12:59 +0200)
committerDmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Sat, 11 Oct 2025 16:38:20 +0000 (19:38 +0300)
commitdb74b04edce1bc86b9a5acc724c7ca06f427ab60
tree4f25aa4c18093ad2a67e86e1723c114ebcb09887
parente07e10ae83bdf429f59c8c149173a8c4f29c481e
drm/bridge: lt9211: Drop check for last nibble of version register

There is now a new LT9211 rev. U5, which reports chip ID 0x18 0x01 0xe4 .
The previous LT9211 reported chip ID 0x18 0x01 0xe3 , which is what the
driver checks for right now. Since there is a possibility there will be
yet another revision of the LT9211 in the future, drop the last version
nibble check to allow all future revisions of the chip to work with this
driver.

This fix makes LT9211 rev. U5 work with this driver.

Fixes: 8ce4129e3de4 ("drm/bridge: lt9211: Add Lontium LT9211 bridge driver")
Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251011110017.12521-1-marek.vasut@mailbox.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
drivers/gpu/drm/bridge/lontium-lt9211.c