From: Krzysztof Hałasa khalasa@piap.pl
stable inclusion from stable-5.10.65 commit d4abb6e141051445cd469a0bc9bb40b7cd37904f bugzilla: 182361 https://gitee.com/openeuler/kernel/issues/I4EH3U
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit ea3e1c36e38810427485f06c2becc1f29e54521d ]
Without this patch, the TDA19971 chip's EDID is inactive. EDID never worked with this driver, it was all tested with HDMI signal sources which don't need EDID support.
Signed-off-by: Krzysztof Halasa khalasa@piap.pl Fixes: 9ac0038db9a7 ("media: i2c: Add TDA1997x HDMI receiver driver") Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/media/i2c/tda1997x.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/media/i2c/tda1997x.c b/drivers/media/i2c/tda1997x.c index 89bb7e6dc7a4..9554c8348c02 100644 --- a/drivers/media/i2c/tda1997x.c +++ b/drivers/media/i2c/tda1997x.c @@ -2233,6 +2233,7 @@ static int tda1997x_core_init(struct v4l2_subdev *sd) /* get initial HDMI status */ state->hdmi_status = io_read(sd, REG_HDMI_FLAGS);
+ io_write(sd, REG_EDID_ENABLE, EDID_ENABLE_A_EN | EDID_ENABLE_B_EN); return 0; }