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mb/google/fatcat/var/kinmen: Add Synaptics touchpad

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Add support for Synaptics HID-over-I2C touchpad
(addr and offset per spec: Product Spec_03510_Rev1.pdf)

BUG=None
TEST=1. emerge-fatcat coreboot
     2. check touchpad function is working properly.

Change-Id: Ib4e96e9b7df7d9adba2534b12eaf5d6cb7bb4317
Signed-off-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88349
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
This commit is contained in:
Ivy Jian 2025-07-08 12:03:01 +08:00 • committed by Subrata Banik
commit 18c067d392
1 changed files with 9 additions and 0 deletions
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9
src/mainboard/google/fatcat/variants/kinmen/overridetree.cb
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@ -246,6 +246,15 @@ chip soc/intel/pantherlake
register "hid_desc_reg_offset" = "0x20"
device i2c 68 on end
end
chip drivers/i2c/hid
register "generic.hid" = ""PNP0C50""
register "generic.desc" = ""Synaptics Touchpad""
register "generic.irq" = "ACPI_IRQ_WAKE_LEVEL_LOW(GPP_E18_IRQ)"
register "generic.wake" = "GPE0_DW2_18"
register "generic.detect" = "1"
register "hid_desc_reg_offset" = "0x20"
device i2c 2c on end
end
end # I2C4
device ref i2c5 on
chip drivers/i2c/hid