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authorWisley Chen <wisley.chen@quantatw.com>2016-11-10 10:34:58 -0500
committerMartin Roth <martinroth@google.com>2017-01-17 17:58:34 +0100
commit01ba8cf7a78419eb1ac3c98ad33656b8925ef565 (patch)
tree6f7b2138082518584d1e22f210736355911fb748 /src/mainboard
parentce0a56419854d8c2bd0fac401c76139106fc4dd8 (diff)
downloadcoreboot-01ba8cf7a78419eb1ac3c98ad33656b8925ef565.tar.xz
mainboard/google/snappy: 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:59034 BRANCH=master TEST=emerge-snappy coreboot chromeos-bootimage Change-Id: I08c05d06b2812a33b3fdff9b42b2a8e0653dd8b4 Signed-off-by: Wisley Chen <wisley.chen@quantatw.com> Reviewed-on: https://review.coreboot.org/17366 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/mainboard')
-rw-r--r--src/mainboard/google/reef/variants/snappy/devicetree.cb4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/google/reef/variants/snappy/devicetree.cb b/src/mainboard/google/reef/variants/snappy/devicetree.cb
index e46483e3b0..9e4dc38116 100644
--- a/src/mainboard/google/reef/variants/snappy/devicetree.cb
+++ b/src/mainboard/google/reef/variants/snappy/devicetree.cb
@@ -175,6 +175,10 @@ 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