Change in coreboot[master]: mb/google/dedede/var/storo: Enable ELAN touchscreen

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/50981 )

Change subject: mb/google/dedede/var/storo: Enable ELAN touchscreen
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mb/google/dedede/var/storo: Enable ELAN touchscreen

Add ELAN touchscreen into devicetree for storo.

BUG=b:177389448
BRANCH=dedede
TEST=built storo firmware and verified touchscreen function

Change-Id: I0d9e5005928c6fda3d1f0ce8bd9ae135e4a04867
Signed-off-by: Zanxi Chen 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50981
Reviewed-by: Karthik Ramasubramanian 
Reviewed-by: Tao Xia 
Tested-by: build bot (Jenkins) 
---
M src/mainboard/google/dedede/variants/storo/overridetree.cb
1 file changed, 16 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Karthik Ramasubramanian: Looks good to me, approved
  Tao Xia: Looks good to me, but someone else must approve

diff --git a/src/mainboard/google/dedede/variants/storo/overridetree.cb b/src/mainboard/google/dedede/variants/storo/overridetree.cb
index a92dbdb..e4624e5 100644
--- a/src/mainboard/google/dedede/variants/storo/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/storo/overridetree.cb
@@ -47,5 +47,21 @@
    			device i2c 15 on end
    		end
    	end #I2C 0
+		device pci 15.2 on
+			chip drivers/i2c/hid
+				register "generic.hid" = ""ELAN9008""
+				register "generic.desc" = ""ELAN Touchscreen""
+				register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_D4_IRQ)"
+				register "generic.probed" = "1"
+				register "generic.reset_gpio" =
+							"ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D5)"
+				register "generic.enable_gpio" =
+							"ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_D6)"
+				register "generic.enable_delay_ms" = "7"
+				register "generic.has_power_resource" = "1"
+				register "hid_desc_reg_offset" = "0x01"
+				device i2c 10 on end
+			end
+		end # I2C 2
    end
 end