The (shared) probing code of the arizona-i2c and arizona-spi modules
takes the following steps during init:
1. Call mfd_add_devices() for a set of early child-devices, this
includes the arizona_ldo1 device which provides one of the
core-regulators.
2. Bulk enable the core-regulators.
3. Read the device id.
4. Call mfd_add_devices() for the other child-devices.
This sequence depends on 1. leading to not only the child-device
being created, but also the driver for the child-device binding
to it and registering its regulator.
This requires the arizona_ldo1 driver to be loaded before the
shared probing code runs. Add a softdep for this to both modules to
ensure that this requirement is met.
Note this mirrors the existing MODULE_SOFTDEP("pre: wm8994_regulator")
in the wm8994 code, which has a similar init sequence.
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Acked-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/mfd/arizona-i2c.c | 1 +
drivers/mfd/arizona-spi.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/drivers/mfd/arizona-i2c.c b/drivers/mfd/arizona-i2c.c
index 4b58e3ad6eb6..2a4a3a164d0a 100644
--- a/drivers/mfd/arizona-i2c.c
+++ b/drivers/mfd/arizona-i2c.c
@@ -115,6 +115,7 @@ static struct i2c_driver arizona_i2c_driver = {
module_i2c_driver(arizona_i2c_driver);
+MODULE_SOFTDEP("pre: arizona_ldo1");
MODULE_DESCRIPTION("Arizona I2C bus interface");
MODULE_AUTHOR("Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>");
MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/arizona-spi.c b/drivers/mfd/arizona-spi.c
index 2633e147b76c..704f214d2614 100644
--- a/drivers/mfd/arizona-spi.c
+++ b/drivers/mfd/arizona-spi.c
@@ -110,6 +110,7 @@ static struct spi_driver arizona_spi_driver = {
module_spi_driver(arizona_spi_driver);
+MODULE_SOFTDEP("pre: arizona_ldo1");
MODULE_DESCRIPTION("Arizona SPI bus interface");
MODULE_AUTHOR("Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>");
MODULE_LICENSE("GPL");
--
2.28.0
