Re: [PATCH V3 RESEND 0/2] Add tc3408 bindings and timing
From: Dmitry Torokhov
Date: Thu Feb 26 2026 - 11:52:22 EST
On Thu, Jan 08, 2026 at 02:35:22PM +0800, Langyan Ye wrote:
> 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.
>
> Changes in v3:
> - PATCH 2/2: Corrected post_gpio_reset_on_delay_ms: 100 -> 300
> - Link to v2: https://lore.kernel.org/all/20250820122520.3356738-1-yelangyan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
>
> Changes in v2:
> - PATCH 1/2: Drop redundant "bindings for" from subject
> - PATCH 1/2: Improve description (describe hardware instead of bindings)
> - PATCH 1/2: Drop "panel: true" property
> - PATCH 1/2: Drop redundant description for reset-gpios
> - PATCH 1/2: Use unevaluatedProperties: false instead of additionalProperties
> - Link to v1: https://lore.kernel.org/all/20250819034852.1230264-1-yelangyan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
>
> Langyan Ye (2):
> dt-bindings: input: Add Parade TC3408 touchscreen controller
> HID: i2c-hid: elan: Add parade-tc3408 timing
>
> .../bindings/input/parade,tc3408.yaml | 68 +++++++++++++++++++
> drivers/hid/i2c-hid/i2c-hid-of-elan.c | 8 +++
> 2 files changed, 76 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/input/parade,tc3408.yaml
Applied the lot, thank you.
--
Dmitry