According to the datasheet, the last bit of CHIP_ID register controls
I2C bus, and the first one is unused. Handle this correctly.
Signed-off-by: Sergey Larin <cerg2010cerg2010@xxxxxxx>
---
drivers/iio/gyro/mpu3050-core.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/iio/gyro/mpu3050-core.c b/drivers/iio/gyro/mpu3050-core.c
index 77fac81a3adc..5ddebede31a6 100644
--- a/drivers/iio/gyro/mpu3050-core.c
+++ b/drivers/iio/gyro/mpu3050-core.c
@@ -29,7 +29,8 @@
#include "mpu3050.h"
-#define MPU3050_CHIP_ID 0x69
+#define MPU3050_CHIP_ID 0x68
+#define MPU3050_CHIP_ID_MASK 0x7E
/*
* Register map: anything suffixed *_H is a big-endian high byte and always
@@ -1176,8 +1177,9 @@ int mpu3050_common_probe(struct device *dev,
goto err_power_down;
}
- if (val != MPU3050_CHIP_ID) {
- dev_err(dev, "unsupported chip id %02x\n", (u8)val);
+ if ((val & MPU3050_CHIP_ID_MASK) != MPU3050_CHIP_ID) {
+ dev_err(dev, "unsupported chip id %02x\n",
+ (u8)(val & MPU3050_CHIP_ID_MASK));
ret = -ENODEV;
goto err_power_down;
}
--
2.21.0
