From: Krzysztof Hałasa khalasa@piap.pl
stable inclusion from linux-4.19.207 commit 6b0bb0c2fbb7f69a0108f5712f05d130255ca1e7
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[ 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: Yang Yingliang yangyingliang@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 d114ac5243eca..dab441bbc9f06 100644 --- a/drivers/media/i2c/tda1997x.c +++ b/drivers/media/i2c/tda1997x.c @@ -2229,6 +2229,7 @@ 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; }