The non DM code path already would enable pci bus mastering. Do the same for the DM code path.
Fixes AHCI problems I am seeing on an Intel Apollolake device.
Signed-off-by: Christian Gmeiner christian.gmeiner@gmail.com Reviewed-by: Bin Meng bmeng.cn@gmail.com ---
v2: Add Bin's R-b and remove the ending '.' from comment. v3: Add the patch changelog to the correct place
drivers/ata/ahci.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 6998b82aa5..360ac2c060 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1152,7 +1152,12 @@ int ahci_probe_scsi(struct udevice *ahci_dev, ulong base) int ahci_probe_scsi_pci(struct udevice *ahci_dev) { ulong base; - u16 vendor, device; + u16 vendor, device, cmd; + + /* Enable bus mastering */ + dm_pci_read_config16(dev, PCI_COMMAND, &cmd); + cmd |= PCI_COMMAND_MASTER; + dm_pci_write_config16(dev, PCI_COMMAND, cmd);
base = (ulong)dm_pci_map_bar(ahci_dev, PCI_BASE_ADDRESS_5, 0, 0, PCI_REGION_TYPE, PCI_REGION_MEM);