mb/google/poppy/variants/nautilus: Configure for 2nd nautilus SKU

For supporting new SKU, we need to override GPIO table and device configuration.
The board ID of 2nd SKU of nautilus is started from 9, so we would determine SKU with it.

BUG=b:80052672
BRANCH=poppy
TEST=emerge-nautilus coreboot

Change-Id: I7242f23f47010664cc29ea86a126e63c9dd62ccd
Signed-off-by: Seunghwan Kim <sh_.kim@samsung.com>
Reviewed-on: https://review.coreboot.org/27147
Reviewed-by: Enrico Granata <egranata@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/src/mainboard/google/poppy/variants/nautilus/mainboard.c b/src/mainboard/google/poppy/variants/nautilus/mainboard.c
new file mode 100644
index 0000000000..b4ef1c29dc
--- /dev/null
+++ b/src/mainboard/google/poppy/variants/nautilus/mainboard.c
@@ -0,0 +1,82 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 Google Inc.
+ *
+ * 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 <boardid.h>
+#include <baseboard/variants.h>
+#include <chip.h>
+#include <device/device.h>
+#include <variant/sku.h>
+
+uint32_t variant_board_sku(void)
+{
+	static uint32_t sku_id = SKU_UNKNOWN;
+
+	if (sku_id != SKU_UNKNOWN)
+		return sku_id;
+
+	if (board_id() < 9)
+		sku_id = SKU_0_NAUTILUS;
+	else
+		sku_id = SKU_1_NAUTILUS_LTE;
+
+	return sku_id;
+}
+
+/* Override dev tree settings per board */
+void variant_devtree_update(void)
+{
+	uint32_t sku_id = variant_board_sku();
+	struct device *root = SA_DEV_ROOT;
+	config_t *cfg = root->chip_info;
+
+	switch (sku_id) {
+	case SKU_0_NAUTILUS:
+		/* Disable LTE module */
+		cfg->usb3_ports[3].enable = 0;
+		break;
+
+	case SKU_1_NAUTILUS_LTE:
+		/* LTE board has different layout with Wifi sku, it need
+		   new USB2 port strength settings */
+
+		/* Configure USB2 port 0 - USB2_PORT_TYPE_C(OC1) */
+		cfg->usb2_ports[0].enable = 1;
+		cfg->usb2_ports[0].ocpin = OC1;
+		cfg->usb2_ports[0].tx_bias = USB2_BIAS_0MV;
+		cfg->usb2_ports[0].tx_emp_enable = USB2_PRE_EMP_ON;
+		cfg->usb2_ports[0].pre_emp_bias = USB2_BIAS_56MV;
+		cfg->usb2_ports[0].pre_emp_bit = USB2_HALF_BIT_PRE_EMP;
+
+		/* Configure USB2 port 1 - USB2_PORT_LONG(OC2) */
+		cfg->usb2_ports[1].enable = 1;
+		cfg->usb2_ports[1].ocpin = OC2;
+		cfg->usb2_ports[1].tx_bias = USB2_BIAS_39MV;
+		cfg->usb2_ports[1].tx_emp_enable = USB2_PRE_EMP_ON;
+		cfg->usb2_ports[1].pre_emp_bias = USB2_BIAS_56MV;
+		cfg->usb2_ports[1].pre_emp_bit = USB2_HALF_BIT_PRE_EMP;
+
+		/* Configure USB2 port 4 - USB2_PORT_TYPE_C(OC0) */
+		cfg->usb2_ports[4].enable = 1;
+		cfg->usb2_ports[4].ocpin = OC0;
+		cfg->usb2_ports[4].tx_bias = USB2_BIAS_0MV;
+		cfg->usb2_ports[4].tx_emp_enable = USB2_PRE_EMP_ON;
+		cfg->usb2_ports[4].pre_emp_bias = USB2_BIAS_56MV;
+		cfg->usb2_ports[4].pre_emp_bit = USB2_HALF_BIT_PRE_EMP;
+		break;
+
+	default:
+		break;
+	}
+}