Furquan Shaikh (furquan@google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17083
-gerrit
commit cd12358c06340cd31099279df699bf54bfab8ed7 Author: Furquan Shaikh furquan@chromium.org Date: Thu Oct 20 22:48:45 2016 -0700
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 --- src/mainboard/google/reef/variants/baseboard/devicetree.cb | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/src/mainboard/google/reef/variants/baseboard/devicetree.cb b/src/mainboard/google/reef/variants/baseboard/devicetree.cb index 00df9bd..30d61f6 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