mb/google/dedede: Enable trackpad support

1. Configure trackpad interrupt GPIO.
2. Set i2c0 configuration.
3. Add trackpad ACPI support.

TEST= Verify trackpad working. Verify I2C SCL frequency below 400Khz
on trackpad operation.

Change-Id: I52c578aef591f5be90fb709bab4c8342ea9729e6
Signed-off-by: Pandya, Varshit B <varshit.b.pandya@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39236
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

src/mainboard/google/dedede/variants/baseboard/gpio.c

@@ -55,7 +55,7 @@ static const struct pad_config gpio_table[] = {
 	/* B2  : PROCHOT_ODL */
 	PAD_NC(GPP_B2, NONE),
 	/* B3  : TRACKPAD_INT_ODL */
-	PAD_NC(GPP_B3, NONE),
+	PAD_CFG_GPI_IRQ_WAKE(GPP_B3, NONE, PLTRST, LEVEL, INVERT),
 	/* B4  : H1_PCH_INT_ODL */
 	PAD_CFG_GPI_APIC(GPP_B4, NONE, PLTRST, LEVEL, INVERT),
 	/* B5  : PCIE_CLKREQ0_N */

src/mainboard/google/dedede/variants/waddledoo/overridetree.cb

@@ -1,3 +1,53 @@
 chip soc/intel/tigerlake
-	device domain 0 on end
+
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C0              | Trackpad                  |
+	#| I2C1              | Digitizer                 |
+	#| I2C2              | Touchscreen               |
+	#| I2C3              | Camera                    |
+	#| I2C4              | Audio                     |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 66,
+			.fall_time_ns = 90,
+			.data_hold_time_ns = 350,
+		},
+		.i2c[1] = {
+			.speed = I2C_SPEED_FAST,
+		},
+		.i2c[2] = {
+			.speed = I2C_SPEED_FAST,
+		},
+		.i2c[3] = {
+			.speed = I2C_SPEED_FAST,
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+		},
+	}"
+	device domain 0 on
+		device pci 15.0 on
+			chip drivers/i2c/generic
+				register "hid" = ""ELAN0000""
+				register "desc" = ""ELAN Touchpad""
+				register "irq" = "ACPI_IRQ_WAKE_EDGE_LOW(GPP_B3_IRQ)"
+				register "wake" = "GPE0_DW0_03"
+				register "probed" = "1"
+				device i2c 15 on end
+			end
+		end #I2C 0
+	end
 end