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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>
This commit is contained in:
Furquan Shaikh 2016-10-20 22:48:45 -07:00 committed by Furquan Shaikh
parent 00a9e38f74
commit 3ce104e5d8
1 changed files with 4 additions and 0 deletions
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4
src/mainboard/google/reef/variants/baseboard/devicetree.cb
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@ -142,6 +142,10 @@ chip soc/intel/apollolake
register "desc" = ""ELAN Touchscreen"" register "desc" = ""ELAN Touchscreen""
register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)" register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)"
register "probed" = "1" 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 device i2c 10 on end
end end
end # - I2C 3 end # - I2C 3