When dm_spi_claim_bus() claims a bus, sometimes plat->mode and/or plat->max_hz have not been copied to the priv object yet. This can lead to an SPI bus malfunction.
To fix this, use the object returned by dev_get_parent_plat() instead, which is set by spi_slave_of_to_plat() on spi_child_post_bind().
Signed-off-by: Hironori KIKUCHI kikuchan98@gmail.com --- drivers/spi/spi-uclass.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c index d604975374..0b3f29b6d8 100644 --- a/drivers/spi/spi-uclass.c +++ b/drivers/spi/spi-uclass.c @@ -54,7 +54,7 @@ int dm_spi_claim_bus(struct udevice *dev) struct udevice *bus = dev->parent; struct dm_spi_ops *ops = spi_get_ops(bus); struct dm_spi_bus *spi = dev_get_uclass_priv(bus); - struct spi_slave *slave = dev_get_parent_priv(dev); + struct dm_spi_slave_plat *slave = dev_get_parent_plat(dev); uint speed, mode;
speed = slave->max_hz;