mb/system76/cml-u: Add Darter Pro 6 as a variant

Change-Id: I9ba7d2af3c9c298fda2b2997d52546cc2f702a82
Signed-off-by: Jeremy Soller <jeremy@system76.com>
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52063
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

Documentation/mainboard/index.md

@@ -180,6 +180,7 @@ The boards in this section are not real mainboards, but emulators.
 
 ## System76
 
+- [Darter Pro 6](system76/darp6.md)
 - [Darter Pro 7](system76/darp7.md)
 - [Galago Pro 4](system76/galp4.md)
 - [Galago Pro 5](system76/galp5.md)

Documentation/mainboard/system76/darp6.md

@@ -0,0 +1,63 @@
+# System76 Darter Pro 6 (darp6)
+
+## Specs
+
+- CPU
+  - Intel Core i7-10510U
+  - Intel Core i5-10210U
+- EC
+  - ITE IT8587E running [System76 EC](https://github.com/system76/ec)
+- Graphics
+  - Intel UHD Graphics 620
+  - eDP 15.6" 1920x1080@60Hz LCD (LG LP156WFC-SPD3)
+- Memory
+  - Up to 64GB (2x32GB) dual-channel DDR4 SO-DIMMs @ 2666 MHz
+- Networking
+  - Gigabit Ethernet
+  - M.2 PCIe/CNVi WiFi/Bluetooth
+    - Intel Wi-Fi 6 AX200/AX201
+    - or Intel Wireless-AC 9560
+- Power
+  - 65W (19V, 3.42A) AC barrel adapter
+    - Chicony A12-065N2A, using a C5 power cord
+  - 54.5Wh 4-cell Lithium-Ion battery
+- Sound
+  - Realtek ALC293 codec
+  - Internal speakers and microphone
+  - Combined 3.5mm headphone and microphone jack
+  - Combined 3.5mm microphone and S/PDIF jack
+  - HDMI, Mini DisplayPort, USB-C DisplayPort audio
+- Storage
+  - 1x M.2 PCIe NVMe or SATA SSD
+  - SD card reader
+- USB
+  - 1x USB Type-C with Thunderbolt 3
+  - 2x USB 3.0 Type-A
+  - 1x USB 2.0 Type-A
+- Dimensions
+  - 1.98cm x 36.04cm x 24.46cm, 1.6kg
+
+
+## Flashing coreboot
+
+```eval_rst
++---------------------+-----------------+
+| Type                | Value           |
++=====================+=================+
+| Socketed flash      | no              |
++---------------------+-----------------+
+| Vendor              | GigaDevice      |
++---------------------+-----------------+
+| Model               | GD25B127D       |
++---------------------+-----------------+
+| Size                | 16 MiB          |
++---------------------+-----------------+
+| Package             | SOIC-8          |
++---------------------+-----------------+
+| Internal flashing   | yes             |
++---------------------+-----------------+
+| External flashing   | yes             |
++---------------------+-----------------+
+```
+
+The flash chip (U26) is right of the DIMM slots.

src/mainboard/system76/cml-u/Kconfig

@@ -1,4 +1,4 @@
-if BOARD_SYSTEM76_GALP4
+if BOARD_SYSTEM76_GALP4 || BOARD_SYSTEM76_DARP6
 
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
@@ -6,6 +6,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select DRIVERS_I2C_HID
 	select EC_SYSTEM76_EC
 	select EC_SYSTEM76_EC_BAT_THRESHOLDS
+	select EC_SYSTEM76_EC_COLOR_KEYBOARD if BOARD_SYSTEM76_DARP6
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_CMOS_DEFAULT
@@ -27,18 +28,22 @@ config MAINBOARD_DIR
 
 config VARIANT_DIR
 	default "galp4" if BOARD_SYSTEM76_GALP4
+	default "darp6" if BOARD_SYSTEM76_DARP6
 
 config OVERRIDE_DEVICETREE
 	default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
 
 config MAINBOARD_PART_NUMBER
 	default "galp4" if BOARD_SYSTEM76_GALP4
+	default "darp6" if BOARD_SYSTEM76_DARP6
 
 config MAINBOARD_SMBIOS_PRODUCT_NAME
 	default "Galago Pro" if BOARD_SYSTEM76_GALP4
+	default "Darter Pro" if BOARD_SYSTEM76_DARP6
 
 config MAINBOARD_VERSION
 	default "galp4" if BOARD_SYSTEM76_GALP4
+	default "darp6" if BOARD_SYSTEM76_DARP6
 
 config CBFS_SIZE
 	default 0xA00000

src/mainboard/system76/cml-u/Kconfig.name

@@ -1,2 +1,5 @@
 config BOARD_SYSTEM76_GALP4
 	bool "galp4"
+
+config BOARD_SYSTEM76_DARP6
+	bool "darp6"

src/mainboard/system76/cml-u/variants/darp6/board_info.txt

@@ -0,0 +1 @@
+Board name: darp6

src/mainboard/system76/cml-u/variants/darp6/hda_verb.c

@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/azalia_device.h>
+
+const u32 cim_verb_data[] = {
+	/* Realtek ALC293 */
+	0x10ec0293, /* Vendor ID */
+	0x15581404, /* Subsystem ID */
+	12, /* Number of entries */
+	AZALIA_SUBVENDOR(0, 0x15581404),
+	AZALIA_PIN_CFG(0, 0x12, 0x90a60140),
+	AZALIA_PIN_CFG(0, 0x13, 0x40000000),
+	AZALIA_PIN_CFG(0, 0x14, 0x90170110),
+	AZALIA_PIN_CFG(0, 0x15, 0x02211020),
+	AZALIA_PIN_CFG(0, 0x16, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x18, 0x02a11050),
+	AZALIA_PIN_CFG(0, 0x19, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x1a, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x1b, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x1d, 0x41738205),
+	AZALIA_PIN_CFG(0, 0x1e, 0x02451130),
+
+	/* Intel GPU HDMI */
+	0x8086280b, /* Vendor ID */
+	0x80860101, /* Subsystem ID */
+	4, /* Number of entries */
+	AZALIA_SUBVENDOR(2, 0x80860101),
+	AZALIA_PIN_CFG(2, 0x05, 0x18560010),
+	AZALIA_PIN_CFG(2, 0x06, 0x18560010),
+	AZALIA_PIN_CFG(2, 0x07, 0x18560010),
+};
+
+const u32 pc_beep_verbs[] = {};
+
+AZALIA_ARRAY_SIZES;

src/mainboard/system76/cml-u/variants/darp6/overridetree.cb

@@ -0,0 +1,15 @@
+chip soc/intel/cannonlake
+	device domain 0 on
+		subsystemid 0x1558 0x1404 inherit
+		device pci 15.0 on
+			chip drivers/i2c/hid
+				register "generic.hid" = ""PNP0C50""
+				register "generic.desc" = ""Synaptics Touchpad""
+				register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_C23_IRQ)"
+				register "generic.probed" = "1"
+				register "hid_desc_reg_offset" = "0x20"
+				device i2c 2c on end
+			end
+		end # I2C #0
+	end
+end