[M] Change in coreboot[master]: mb/google/myst: Add DXIO descriptors

[Jon Murphy (Code Review)]

Jon Murphy has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/74178 )

Change subject: mb/google/myst: Add DXIO descriptors
......................................................................

mb/google/myst: Add DXIO descriptors

Add Myst DXIO descriptors using info from AMD and skyrim board
shematics.

BUG=b:276744321
TEST=builds

Change-Id: I12726499ee644b158cc06ed102bb1c8559e1a73c
---
M src/mainboard/google/myst/port_descriptors.c
M src/mainboard/google/myst/variants/baseboard/include/baseboard/variants.h
2 files changed, 97 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/78/74178/1

diff --git a/src/mainboard/google/myst/port_descriptors.c b/src/mainboard/google/myst/port_descriptors.c
index 9d3b15b..64255f2 100644
--- a/src/mainboard/google/myst/port_descriptors.c
+++ b/src/mainboard/google/myst/port_descriptors.c
@@ -1,11 +1,86 @@
 /* SPDX-License-Identifier: GPL-2.0-only */

+#include <baseboard/variants.h>
+#include <soc/gpio.h>
 #include <soc/platform_descriptors.h>
 #include <types.h>

+static const fsp_dxio_descriptor skyrim_sbna_dxio_descriptors[] = {
+	{ /* WLAN */
+		.engine_type = PCIE_ENGINE,
+		.port_present = true,
+		.start_logical_lane = 0,
+		.end_logical_lane = 0,
+		.device_number = PCI_SLOT(WLAN_DEVFN),
+		.function_number = PCI_FUNC(WLAN_DEVFN),
+		.link_speed_capability = GEN3,
+		.turn_off_unused_lanes = true,
+		.link_aspm = 2,
+		.link_hotplug = 3,
+		.clk_req = CLK_REQ2,
+	},
+	{ /*  SD */
+		.engine_type = PCIE_ENGINE,
+		.port_present = true,
+		.start_logical_lane = 1,
+		.end_logical_lane = 1,
+		.device_number = PCI_SLOT(SD_DEVFN),
+		.function_number = PCI_FUNC(SD_DEVFN),
+		.link_speed_capability = GEN3,
+		.turn_off_unused_lanes = true,
+		.gpio_group_id = GPIO_27,
+		.clk_req = CLK_REQ1,
+	},
+	{ /* SSD */
+		.engine_type = PCIE_ENGINE,
+		.port_present = true,
+		.start_logical_lane = 2,
+		.end_logical_lane = 3,
+		.device_number = PCI_SLOT(NVME_DEVFN),
+		.function_number = PCI_FUNC(NVME_DEVFN),
+		.link_speed_capability = GEN3,
+		.turn_off_unused_lanes = true,
+		.link_aspm = 2,
+		.link_hotplug = 3,
+		.gpio_group_id = GPIO_6,
+		.clk_req = CLK_REQ0,
+	},
+};
+
+static const fsp_ddi_descriptor skyrim_sbna_ddi_descriptors[] = {
+	{ /* DDI0 - eDP */
+		.connector_type = DDI_EDP,
+		.aux_index = DDI_AUX1,
+		.hdp_index = DDI_HDP1
+	},
+	{ /* DDI1 -  DP (type C) */
+		.connector_type = DDI_DP,
+		.aux_index = DDI_AUX2,
+		.hdp_index = DDI_HDP2
+	},
+	{ /* DDI2 - DP (type C) */
+		.connector_type = DDI_DP,
+		.aux_index = DDI_AUX3,
+		.hdp_index = DDI_HDP3,
+	},
+	{ /* DDI3 - DP (type C) */
+		.connector_type = DDI_DP,
+		.aux_index = DDI_AUX4,
+		.hdp_index = DDI_HDP4,
+	},
+	{ /* DDI4 - Unused */
+		.connector_type = DDI_UNUSED_TYPE,
+		.aux_index = DDI_AUX5,
+		.hdp_index = DDI_HDP5,
+	},
+};
+
 void mainboard_get_dxio_ddi_descriptors(
    	const fsp_dxio_descriptor **dxio_descs, size_t *dxio_num,
    	const fsp_ddi_descriptor **ddi_descs, size_t *ddi_num)
 {
-	/* TODO(b/276744321): Initialize DXIO and DDI descriptors */
+	*dxio_descs = skyrim_sbna_dxio_descriptors;
+	*dxio_num = ARRAY_SIZE(skyrim_sbna_dxio_descriptors);
+	*ddi_descs = skyrim_sbna_ddi_descriptors;
+	*ddi_num = ARRAY_SIZE(skyrim_sbna_ddi_descriptors);
 }
diff --git a/src/mainboard/google/myst/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/myst/variants/baseboard/include/baseboard/variants.h
index 5f127ba..9c52732 100644
--- a/src/mainboard/google/myst/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/myst/variants/baseboard/include/baseboard/variants.h
@@ -4,6 +4,12 @@
 #define __BASEBOARD_VARIANTS_H__

#include <amdblocks/gpio.h>
+#include <platform_descriptors.h>
+#include <soc/pci_devs.h>
+
+#define WLAN_DEVFN	PCIE_GPP_2_0_DEVFN
+#define SD_DEVFN	PCIE_GPP_2_1_DEVFN
+#define NVME_DEVFN	PCIE_GPP_2_2_DEVFN

/* This function provides base GPIO configuration table. */