google/reks: override USB2 Phy settings on BSW D-Stepping SOC

Adapted from Chromium commit 12ad5b5: Reks : override USB2 Phy settings...

Base on Intel recommendation, override following
settings for USB2 port 1/2/3 on BSW D-stepping SOC.

1. Set USB[1] register for right side to 7321
2. Set USB[2] register for left side to 7021
3. Set USB[3] register for CCD to 7021

Original-Change-Id: I04240a010e875f29c47f4fea83ff918f180b0273
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Tested-by: Keith Tzeng <keith.tzeng@quantatw.com>

Change-Id: Iabd6312576e9897315c4e4dbf19341380d9d1414
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/22269
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

2 files changed, 41 insertions, 0 deletions

diff --git a/src/mainboard/google/cyan/variants/reks/Makefile.inc b/src/mainboard/google/cyan/variants/reks/Makefile.inc
index db2eea3d29..da5b5cc153 100644
--- a/src/mainboard/google/cyan/variants/reks/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/reks/Makefile.inc
@@ -18,6 +18,7 @@ romstage-y += romstage.c
 romstage-y += spd_util.c
 
 ramstage-y += gpio.c
+ramstage-y += ramstage.c
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/cyan/variants/reks/ramstage.c b/src/mainboard/google/cyan/variants/reks/ramstage.c
new file mode 100644
index 0000000000..27f9dfa241
--- /dev/null
+++ b/src/mainboard/google/cyan/variants/reks/ramstage.c
@@ -0,0 +1,40 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <soc/ramstage.h>
+
+void board_silicon_USB2_override(SILICON_INIT_UPD *params)
+{
+	if (SocStepping() >= SocD0) {
+		//D-Stepping
+		//USB2[1] right external port
+		params->Usb2Port1PerPortPeTxiSet = 7;
+		params->Usb2Port1PerPortTxiSet = 3;
+		params->Usb2Port1IUsbTxEmphasisEn = 2;
+		params->Usb2Port1PerPortTxPeHalf = 1;
+
+		//USB2[2] left external port
+		params->Usb2Port2PerPortPeTxiSet = 7;
+		params->Usb2Port2PerPortTxiSet = 0;
+		params->Usb2Port2IUsbTxEmphasisEn = 2;
+		params->Usb2Port2PerPortTxPeHalf = 1;
+
+		//USB2[3] CCD
+		params->Usb2Port3PerPortPeTxiSet = 7;
+		params->Usb2Port3PerPortTxiSet = 0;
+		params->Usb2Port3IUsbTxEmphasisEn = 2;
+		params->Usb2Port3PerPortTxPeHalf = 1;
+	}
+}