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Diffstat (limited to 'src/soc/intel/broadwell/sata.c')
-rw-r--r--src/soc/intel/broadwell/sata.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/sata.c b/src/soc/intel/broadwell/sata.c
index e9e0810de1..0e2516185a 100644
--- a/src/soc/intel/broadwell/sata.c
+++ b/src/soc/intel/broadwell/sata.c
@@ -92,6 +92,13 @@ static void sata_init(struct device *dev)
abar = (u8 *)(pci_read_config32(dev, PCI_BASE_ADDRESS_5));
printk(BIOS_DEBUG, "ABAR: %p\n", abar);
+ /* CAP (HBA Capabilities) : enable power management */
+ reg32 = read32(abar + 0x00);
+ reg32 |= 0x0c006000; /* set PSC+SSC+SALP+SSS */
+ reg32 &= ~0x00020060; /* clear SXS+EMS+PMS */
+ reg32 |= (1 << 18); /* SAM: SATA AHCI MODE ONLY */
+ write32(abar + 0x00, reg32);
+
/* PI (Ports implemented) */
write32(abar + 0x0c, config->sata_port_map);
(void) read32(abar + 0x0c); /* Read back 1 */