[coreboot-gerrit] Change in coreboot[master]: trogdor: Add mainboard USB support

[mturney mturney (Code Review)]

mturney mturney has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/36232 )

Change subject: trogdor: Add mainboard USB support
......................................................................

trogdor: Add mainboard USB support

Change-Id: I126d1d6b582ea95c97ac55784d44d3081aabdae7
Signed-off-by: Sandeep Maheswaram 
---
M src/mainboard/google/trogdor/mainboard.c
M src/mainboard/google/trogdor/romstage.c
2 files changed, 25 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/32/36232/1

diff --git a/src/mainboard/google/trogdor/mainboard.c b/src/mainboard/google/trogdor/mainboard.c
index dbdb4ed..170955a 100644
--- a/src/mainboard/google/trogdor/mainboard.c
+++ b/src/mainboard/google/trogdor/mainboard.c
@@ -19,10 +19,23 @@
 #include <gpio.h>
 #include <timestamp.h>
 #include <soc/qupv3_fw_config.h>
+#include <soc/usb.h>
+
+static struct usb_board_data usb0_board_data = {
+	.pll_bias_control_2 = 0x22,
+	.imp_ctrl1 = 0x08,
+	.port_tune1 = 0xc5,
+};
+
+static void setup_usb(void)
+{
+	setup_usb_host0(&usb0_board_data);
+}

static void mainboard_init(struct device *dev)
 {
    qupv3_fw_init();
+	setup_usb();
 }

static void mainboard_enable(struct device *dev)
diff --git a/src/mainboard/google/trogdor/romstage.c b/src/mainboard/google/trogdor/romstage.c
index 7185387..872798a 100644
--- a/src/mainboard/google/trogdor/romstage.c
+++ b/src/mainboard/google/trogdor/romstage.c
@@ -14,10 +14,22 @@
  */

#include <arch/stages.h>
+#include <soc/usb.h>
 #include <soc/qclib_common.h>

+static void prepare_usb(void)
+{
+	/*
+	 * Do DWC3 core and phy reset. Kick these resets
+	 * off early so they get at least 1ms to settle.
+	 */
+	reset_usb0();
+}
+
 void platform_romstage_main(void)
 {
+	prepare_usb();
+
    /* QCLib: DDR init & train */
    qclib_load_and_run();
 }