Patch set updated for coreboot: google/pyro: Add ELAN touch screen support

[Keith Tzeng]

Keith Tzeng ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/18086

-gerrit

commit 36f9774e7cbb1b76aa10cec909585f58cb318506
Author: Kevin Chiu 
Date:   Tue Jan 10 22:31:05 2017 +0800

google/pyro: Add ELAN touch screen support

Current fw does not create ACPI device for
    OS to recognize ELAN touchscreen.

List the touch screen in the devicetree so that
    the correct ACPI device are created.

BUG=chrome-os-partner:61803
    BRANCH=reef
    TEST=emerge-pyro coreboot
    Change-Id: I9015fa63ef3aba74b682da3608a05ee49c4947c5
    Signed-off-by: Kevin Chiu 
---
 src/mainboard/google/reef/variants/pyro/devicetree.cb | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/mainboard/google/reef/variants/pyro/devicetree.cb b/src/mainboard/google/reef/variants/pyro/devicetree.cb
index bc06bbb..f7551d6 100644
--- a/src/mainboard/google/reef/variants/pyro/devicetree.cb
+++ b/src/mainboard/google/reef/variants/pyro/devicetree.cb
@@ -176,6 +176,21 @@ chip soc/intel/apollolake
    			register "hid_desc_reg_offset" = "0x1"
    			device i2c 0xA on end
    		end
+			chip drivers/i2c/generic
+				register "hid" = ""ELAN0001""
+				register "desc" = ""ELAN Touchscreen""
+				register "irq" = "IRQ_EDGE_LOW(GPIO_21_IRQ)"
+				register "probed" = "1"
+
+				chip drivers/generic/gpio_regulator
+					register "name" = ""vcc33""
+					register "gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)"
+					register "enabled_on_boot" = "1"
+					device generic 0 on end
+				end
+
+				device i2c 10 on end
+			end
    	end	# - I2C 3
    	device pci 17.0 on
    		chip drivers/i2c/generic