SATA: Add option to configure gen3 transmitter
Unfortunately the drive strength values are very much board
specific and different between mobile and desktop so we don't
try to do any fancy detection here but let it be specified
directly in the devicetree.
Change-Id: I66674bff0de04ecd088fb09afad1cf801a374df2
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/1347
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/southbridge/intel/bd82x6x/sata.c b/src/southbridge/intel/bd82x6x/sata.c
index c0eb232..2e41158 100644
--- a/src/southbridge/intel/bd82x6x/sata.c
+++ b/src/southbridge/intel/bd82x6x/sata.c
@@ -182,6 +182,15 @@
pci_write_config32(dev, 0x94,
((config->sata_port_map ^ 0x3f) << 24) | 0x183);
}
+
+ /* Set Gen3 Transmitter settings if needed */
+ if (config->sata_port0_gen3_tx)
+ pch_iobp_update(SATA_IOBP_SP0G3IR, 0,
+ config->sata_port0_gen3_tx);
+
+ if (config->sata_port1_gen3_tx)
+ pch_iobp_update(SATA_IOBP_SP1G3IR, 0,
+ config->sata_port1_gen3_tx);
}
static void sata_enable(device_t dev)