From 51bb3afe9c5f04114c94dcf0bd45ee8a21bf8312 Mon Sep 17 00:00:00 2001 From: Eric Lai Date: Fri, 26 May 2023 12:06:36 +0800 Subject: [PATCH] mb/google/myst: Add ELAN touch screen Follow the eKTH7B18U_Product_Spec_V1.1 to add the device. BUG=b:284381267 TEST=Check touch screen can detect in coreboot. [INFO ] \_SB.I2C1.H010: ELAN Touchscreen at I2C: 02:10 Signed-off-by: Eric Lai Change-Id: I4bd521410953892a477020a872de0d882001b178 Reviewed-on: https://review.coreboot.org/c/coreboot/+/75480 Tested-by: build bot (Jenkins) Reviewed-by: Tim Van Patten Reviewed-by: Jon Murphy --- .../google/myst/variants/myst/overridetree.cb | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/src/mainboard/google/myst/variants/myst/overridetree.cb b/src/mainboard/google/myst/variants/myst/overridetree.cb index 6e36e432d1..d701dea49c 100644 --- a/src/mainboard/google/myst/variants/myst/overridetree.cb +++ b/src/mainboard/google/myst/variants/myst/overridetree.cb @@ -44,6 +44,27 @@ chip soc/amd/phoenix device i2c 15 on end end end # I2C0 + device ref i2c_1 on + chip drivers/i2c/hid + register "generic.hid" = ""ELAN90FC"" + register "generic.desc" = ""ELAN Touchscreen"" + register "generic.irq_gpio" = "ACPI_GPIO_IRQ_LEVEL_LOW(GPIO_91)" + register "generic.detect" = "1" + register "generic.reset_gpio" = + "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPIO_157)" + register "generic.reset_delay_ms" = "20" + register "generic.reset_off_delay_ms" = "1" + register "generic.enable_gpio" = + "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_144)" + register "generic.enable_delay_ms" = "6" + register "generic.stop_gpio" = + "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPIO_74)" + register "generic.stop_off_delay_ms" = "1" + register "generic.has_power_resource" = "1" + register "hid_desc_reg_offset" = "0x01" + device i2c 0x10 on end + end + end # I2C1 device ref i2c_3 on chip drivers/i2c/generic register "hid" = ""RTL5682""