mb/google/poppy/variants/nami: Enable synaptics touchscreen support
BUG=b:74595040
BRANCH=master
TEST=
1. emerge-nami coreboot chromeos-bootimage
2. Booted on Pantheon with S7817 PCBa connected
3. Check touchscreen device is enabled by evtest
/dev/input/event4: SYTS7817:00 06CB:7817
Change-Id: Ic11684d5ed961af5eb704909f7d06eb0898068c2
Signed-off-by: Ivy Jian <ivy_jian@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/25915
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb
index 1cc2a5e..f23a7fb 100644
--- a/src/mainboard/google/poppy/variants/nami/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb
@@ -266,6 +266,18 @@
register "stop_off_delay_ms" = "2"
device i2c 10 on end
end
+ chip drivers/i2c/hid
+ register "generic.hid" = ""SYTS7817""
+ register "generic.desc" = ""Synaptics Touchscreen""
+ register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_E7_IRQ)"
+ register "generic.probed" = "1"
+ register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_B4)"
+ register "generic.enable_delay_ms" = "45"
+ register "generic.has_power_resource" = "1"
+ register "generic.disable_gpio_export_in_crs" = "1"
+ register "hid_desc_reg_offset" = "0x20"
+ device i2c 20 on end
+ end
end # I2C #0
device pci 15.1 on
chip drivers/i2c/generic