Apparently the Vision Components model (VC MIPI OV9281) does not support
address auto-increment, so probe fails with:
ov9282 2-0060: chip id mismatch: 9281!=92ff
Instead two a 1 byte reads to combine the result.
Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
---
drivers/media/i2c/ov9282.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/ov9282.c b/drivers/media/i2c/ov9282.c
index c3faf11a99b5..c507d9d4531a 100644
--- a/drivers/media/i2c/ov9282.c
+++ b/drivers/media/i2c/ov9282.c
@@ -761,11 +761,16 @@ static int ov9282_set_stream(struct v4l2_subdev *sd, int enable)
static int ov9282_detect(struct ov9282 *ov9282)
{
int ret;
+ u32 id[2];
u32 val;
- ret = ov9282_read_reg(ov9282, OV9282_REG_ID, 2, &val);
- if (ret)
- return ret;
+ ret = ov9282_read_reg(ov9282, OV9282_REG_ID + 1,
+ 1, &id[1]);
+ if (!ret)
+ ret = ov9282_read_reg(ov9282, OV9282_REG_ID,
+ 1, &id[0]);
+ val = id[1];
+ val |= (id[0] << 8);
if (val != OV9282_ID) {
dev_err(ov9282->dev, "chip id mismatch: %x!=%x",
--
2.25.1
