mb/purism/librem_skl: Enable and set SATA tuning params
Some Librems have issues with 6Gbps SATA operation on certain
SSDs, setting the Receiver Equalization Boost Magnitude adjustment
resolves this.
Test: build/boot Librem 15v3 with Crucial SATA SSD, observe no issues
booting, no ATA-related errors in dmesg on PureOS 10 / kernel 5.8.7
Change-Id: I078deeff7fc54694393b5b16c41c5d622b332781
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45695
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/mainboard/purism/librem_skl/romstage.c b/src/mainboard/purism/librem_skl/romstage.c
index de493b0..7be8325 100644
--- a/src/mainboard/purism/librem_skl/romstage.c
+++ b/src/mainboard/purism/librem_skl/romstage.c
@@ -64,4 +64,10 @@
mem_cfg->DqPinsInterleaved = TRUE;
mem_cfg->MemorySpdDataLen = blk.len;
mem_cfg->MemorySpdPtr00 = (uintptr_t) blk.spd_array[0];
+
+ /* Enable and set SATA HSIO adjustments for ports 0 and 2 */
+ mem_cfg->PchSataHsioRxGen3EqBoostMagEnable[0] = 1;
+ mem_cfg->PchSataHsioRxGen3EqBoostMagEnable[2] = 1;
+ mem_cfg->PchSataHsioRxGen3EqBoostMag[0] = 1;
+ mem_cfg->PchSataHsioRxGen3EqBoostMag[2] = 1;
}