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mb/google/fatcat/var/ruby: Modify touchpad device setting to enable function

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Modify touchpad device setting to enable the ELAN touchpad.

schematics: RUBY_EVT_0902_2112.pdf

Device i2c log:
[INFO ]  \_SB.PCI0.CNVW: WIFI Device GENERIC: 0.0
[INFO ]  \_SB.PCI0.I2C0.RT58: Headset Codec at I2C: 00:1a
[INFO ]  \_SB.PCI0.I2C0.D04B: TI SPK AMP L at I2C: 00:4b
[INFO ]  \_SB.PCI0.I2C0.D04C: TI SPK AMP R at I2C: 00:4c
[INFO ]  \_SB.PCI0.I2C0.D04D: TI SPK AMP TL at I2C: 00:4d
[INFO ]  \_SB.PCI0.I2C0.D04F: T1 SPK AMP TR at I2C: 00:4f
[INFO ]  \_SB.PCI0.I2C3.TPMI: I2C TPM at I2C: 00:50
[INFO ]  \_SB.PCI0.I2C4.H015: ELAN Touchpad at I2C: 00:15
[INFO ]  \_SB.PCI0.I2C5.H014: Goodix Touchscreen at I2C: 00:14
[INFO ]  \_SB.PCI0.RP01: Enable RTD3 for PCI: 00:00:1c.0 (Intel PCIe Runtime D3)

Changes:
hid : From PIXA2305 to ELAN2705
hid_desc_reg_offset : From 0x20 to 0x01
address : From 0x2C to 0x15

BUG=b:449901218
TEST=Build and boot to OS and use Elan touchpad module to verify the cursor works.

Change-Id: I11dcca5db5558af4cdd4b87a9b42519615839fef
Signed-off-by: Luca Lai <luca.lai@lcfc.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89873
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: YH Lin <yueherngl@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
This commit is contained in:
Luca Lai 2025-11-03 19:51:40 +08:00 • committed by Matt DeVillier
commit 4d9dacae16
1 changed files with 3 additions and 13 deletions
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16
src/mainboard/google/fatcat/variants/ruby/overridetree.cb
View file

@ -257,23 +257,13 @@ chip soc/intel/pantherlake
end # I2C3
device ref i2c4 on
chip drivers/i2c/hid
register "generic.hid" = ""PIXA2305""
register "generic.desc" = ""PIXA Touchpad""
register "generic.irq" = "ACPI_IRQ_WAKE_LEVEL_LOW(GPP_E18_IRQ)"
# NOTE: pmc_gpe0_dw2 is GPP_E in baseboard devicetree.cb.
register "generic.wake" = "GPE0_DW2_18"
register "generic.detect" = "1"
register "hid_desc_reg_offset" = "0x20"
device i2c 68 on end
end
chip drivers/i2c/hid
register "generic.hid" = ""PNP0C50""
register "generic.hid" = ""ELAN2705""
register "generic.desc" = ""ELAN 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
register "hid_desc_reg_offset" = "0x01"
device i2c 15 on end
end
end # I2C4
device ref i2c5 on