As Michael mentions in the description of commit 3abee4579484 ("mfd: Add simple regmap based I2C driver"), "If a device wants to use this as its MFD core driver, it has to add an individual compatible string." The QIXIS FPGA on the LS1028A-QDS boards has a similar purpose to the Kontron SL28 CPLD: it deals with board power-on reset timing, muxing, etc. Signed-off-by: Vladimir Oltean <vladimir.oltean@xxxxxxx> --- drivers/mfd/simple-mfd-i2c.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mfd/simple-mfd-i2c.c b/drivers/mfd/simple-mfd-i2c.c index 51536691ad9d..fee709fed97a 100644 --- a/drivers/mfd/simple-mfd-i2c.c +++ b/drivers/mfd/simple-mfd-i2c.c @@ -63,6 +63,7 @@ static int simple_mfd_i2c_probe(struct i2c_client *i2c) } static const struct of_device_id simple_mfd_i2c_of_match[] = { + { .compatible = "fsl,ls1028a-qds-qixis-i2c" }, { .compatible = "kontron,sl28cpld" }, {} }; -- 2.25.1