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mb/google/trulo/var/kaladin: Add fw config for ELAN touchscreen

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Kaladin support 2 kinds of ELAN touchscreen with different
slave address:

TOP(Touch_IC on Panel): slave address 0x10
DBTS(Touch IC on Daughter BOARD):slave address 0x15

Add FW config to separate ELAN touch screen.

BUG=b:434591789
TEST=build and verified touchscreen work

Change-Id: I3e1c748baf1d392c626ce17f4fcb601ec02ce428
Signed-off-by: wu.garen <wu.garen@inventec.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88585
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
wu.garen 2025-07-28 14:38:02 +08:00 • committed by Maximilian Brune
commit 2ae0f6cdb9
1 changed files with 11 additions and 3 deletions
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14
src/mainboard/google/brya/variants/kaladin/overridetree.cb
View file

@ -7,6 +7,10 @@ fw_config
option MB_USB_1C_1A 0
option MB_USB_2C_1A 1
end
field TOUCH_PANEL 4 5
option TOUCH_ELAN_TOP 0
option TOUCH_ELAN_DBTS 1
end
field STORAGE 30 31
option STORAGE_EMMC 0
option STORAGE_NVME 1
@ -464,7 +468,7 @@ chip soc/intel/alderlake
end #I2C0
device ref i2c1 on
chip drivers/i2c/hid
register "generic.hid" = ""ELAN901C""
register "generic.hid" = ""ELAN2513""
register "generic.desc" = ""ELAN Touchscreen""
register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_E11_IRQ)"
register "generic.detect" = "1"
@ -478,7 +482,9 @@ chip soc/intel/alderlake
register "generic.enable_delay_ms" = "1"
register "generic.has_power_resource" = "1"
register "hid_desc_reg_offset" = "0x01"
device i2c 10 on end
device i2c 10 on
probe TOUCH_PANEL TOUCH_ELAN_TOP
end
end
chip drivers/i2c/hid
register "generic.hid" = ""ELAN2513""
@ -495,7 +501,9 @@ chip soc/intel/alderlake
register "generic.has_power_resource" = "1"
register "generic.use_gpio_for_status" = "true"
register "hid_desc_reg_offset" = "0x01"
device i2c 15 on end
device i2c 15 on
probe TOUCH_PANEL TOUCH_ELAN_DBTS
end
end
end #I2C1
device ref i2c5 on