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authorFurquan Shaikh <furquan@chromium.org>2016-10-20 22:48:45 -0700
committerFurquan Shaikh <furquan@google.com>2016-10-25 00:09:41 +0200
commit3ce104e5d867e96c9a2a21103d26de5826af6b12 (patch)
tree73207101fc81f6a4a5f36b7d69108a7856ae0414 /src/mainboard
parent00a9e38f748c839c3a8edf7f2e242c64180456d4 (diff)
downloadcoreboot-3ce104e5d867e96c9a2a21103d26de5826af6b12.tar.xz
mainboard/google/reef: Add PowerResource for ELAN touchscreen
Define reset_gpio and enable_gpio for touchscreen device so that when kernel puts this device into D3, we put the device into reset. PowerResource _ON and _OFF routines are used to put the device into D0 and D3 states. BUG=chrome-os-partner:55988 Change-Id: Ia905f9eb630cd96767b639aec74131dbd7952d0e Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/17083 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Diffstat (limited to 'src/mainboard')
-rw-r--r--src/mainboard/google/reef/variants/baseboard/devicetree.cb4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/google/reef/variants/baseboard/devicetree.cb b/src/mainboard/google/reef/variants/baseboard/devicetree.cb
index 00df9bd4b9..30d61f63d4 100644
--- a/src/mainboard/google/reef/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/reef/variants/baseboard/devicetree.cb
@@ -142,6 +142,10 @@ chip soc/intel/apollolake
register "desc" = ""ELAN Touchscreen""
register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)"
register "probed" = "1"
+ register "reset_gpio" = "GPIO_36"
+ register "reset_delay_ms" = "20"
+ register "enable_gpio" = "GPIO_152"
+ register "enable_delay_ms" = "1"
device i2c 10 on end
end
end # - I2C 3