google/poppy: enable trackpad as wake source
This configures GPP_A23 as a wake source for the trackpad. We also
need to set up GPP_A GPE0_DW0, thus evicting GPP_B. We don't have any
interesting signals in GPP_B, so we won't be missing it.
I don't have hardware with A23 wired up, so i just tested the wake
source using A19 which is essentially identical to A23.
BUG=b:78541883
TEST=verified we can trackpad can wake system from suspend
Change-Id: If800464c8b2319d758b1823850571919f85bdc6c
Signed-off-by: Caveh Jalali <caveh@chromium.org>
Reviewed-on: https://review.coreboot.org/25850
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/mainboard/google/poppy/variants/atlas/devicetree.cb b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
index 4444549..8ae9b05 100644
--- a/src/mainboard/google/poppy/variants/atlas/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
@@ -11,7 +11,7 @@
# Note that GPE events called out in ASL code rely on this
# route. i.e. If this route changes then the affected GPE
# offset bits also need to be changed.
- register "gpe0_dw0" = "GPP_B"
+ register "gpe0_dw0" = "GPP_A"
register "gpe0_dw1" = "GPP_D"
register "gpe0_dw2" = "GPP_E"
@@ -252,8 +252,7 @@
register "hid" = ""ELAN0000""
register "desc" = ""ELAN Touchpad""
register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_A19_IRQ)"
- # TODO(caveh): fix wake source
- #register "wake" = "GPE0_DWx_19" not possible?
+ register "wake" = "GPE0_DW0_23" # GPP_A23
register "probed" = "1" # may not be present
device i2c 0x15 on end
end