[PATCH v1 0/2] Add tc3408 bindings and timing

From: Langyan Ye
Date: Mon Aug 18 2025 - 23:49:10 EST


The tc3408 touch screen chip same as Elan eKTH6915 controller
has a reset gpio. The difference is that they have different
post_power_delay_ms.

According to the Parade TC3408 datasheet, the reset pin requires a
pull-down duration longer than 10 ms, therefore post_power_delay_ms
is set to 10. In addition, the chipset requires an initialization
time greater than 300 ms after reset, so post_gpio_reset_on_delay_ms
is configured as 300.

Langyan Ye (2):
dt-bindings: HID: i2c-hid: parade: Introduce bindings for Parade
tc3408
HID: i2c-hid: elan: Add parade-tc3408 timing

.../bindings/input/parade,tc3408.yaml | 72 +++++++++++++++++++
drivers/hid/i2c-hid/i2c-hid-of-elan.c | 8 +++
2 files changed, 80 insertions(+)
create mode 100644 Documentation/devicetree/bindings/input/parade,tc3408.yaml

--
2.34.1