Parade-tc3408 requires reset to pull down time greater than 10ms,
so the configuration post_power_delay_ms is 10, and the chipset
initial time is required to be greater than 300ms,
so the post_gpio_reset_on_delay_ms is set to 300.

Signed-off-by: Langyan Ye <yelangyan@huaqin.corp-partner.google.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
---
 drivers/hid/i2c-hid/i2c-hid-of-elan.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/hid/i2c-hid/i2c-hid-of-elan.c b/drivers/hid/i2c-hid/i2c-hid-of-elan.c
index 0215f217f6d8..2a6548fd234a 100644
--- a/drivers/hid/i2c-hid/i2c-hid-of-elan.c
+++ b/drivers/hid/i2c-hid/i2c-hid-of-elan.c
@@ -188,11 +188,19 @@ static const struct elan_i2c_hid_chip_data ilitek_ili2901_chip_data = {
 	.main_supply_name = "vcc33",
 };
 
+static const struct elan_i2c_hid_chip_data parade_tc3408_chip_data = {
+	.post_power_delay_ms = 10,
+	.post_gpio_reset_on_delay_ms = 300,
+	.hid_descriptor_address = 0x0001,
+	.main_supply_name = "vcc33",
+};
+
 static const struct of_device_id elan_i2c_hid_of_match[] = {
 	{ .compatible = "elan,ekth6915", .data = &elan_ekth6915_chip_data },
 	{ .compatible = "elan,ekth6a12nay", .data = &elan_ekth6a12nay_chip_data },
 	{ .compatible = "ilitek,ili9882t", .data = &ilitek_ili9882t_chip_data },
 	{ .compatible = "ilitek,ili2901", .data = &ilitek_ili2901_chip_data },
+	{ .compatible = "parade,tc3408", .data = &parade_tc3408_chip_data },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, elan_i2c_hid_of_match);
-- 
2.34.1

On Thu, Jan 08, 2026 at 02:35:24PM +0800, Langyan Ye wrote:
> Parade-tc3408 requires reset to pull down time greater than 10ms,
> so the configuration post_power_delay_ms is 10, and the chipset
> initial time is required to be greater than 300ms,
> so the post_gpio_reset_on_delay_ms is set to 300.
> 
> Signed-off-by: Langyan Ye <yelangyan@huaqin.corp-partner.google.com>
> Reviewed-by: Douglas Anderson <dianders@chromium.org>

Jiri, Benjamin, another I2C hid with bindings...

> ---
>  drivers/hid/i2c-hid/i2c-hid-of-elan.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/hid/i2c-hid/i2c-hid-of-elan.c b/drivers/hid/i2c-hid/i2c-hid-of-elan.c
> index 0215f217f6d8..2a6548fd234a 100644
> --- a/drivers/hid/i2c-hid/i2c-hid-of-elan.c
> +++ b/drivers/hid/i2c-hid/i2c-hid-of-elan.c
> @@ -188,11 +188,19 @@ static const struct elan_i2c_hid_chip_data ilitek_ili2901_chip_data = {
>  	.main_supply_name = "vcc33",
>  };
>  
> +static const struct elan_i2c_hid_chip_data parade_tc3408_chip_data = {
> +	.post_power_delay_ms = 10,
> +	.post_gpio_reset_on_delay_ms = 300,
> +	.hid_descriptor_address = 0x0001,
> +	.main_supply_name = "vcc33",
> +};
> +
>  static const struct of_device_id elan_i2c_hid_of_match[] = {
>  	{ .compatible = "elan,ekth6915", .data = &elan_ekth6915_chip_data },
>  	{ .compatible = "elan,ekth6a12nay", .data = &elan_ekth6a12nay_chip_data },
>  	{ .compatible = "ilitek,ili9882t", .data = &ilitek_ili9882t_chip_data },
>  	{ .compatible = "ilitek,ili2901", .data = &ilitek_ili2901_chip_data },
> +	{ .compatible = "parade,tc3408", .data = &parade_tc3408_chip_data },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(of, elan_i2c_hid_of_match);

-- 
Dmitry

Hi,

On Wed, Jan 21, 2026 at 2:40 PM Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
>
> On Thu, Jan 08, 2026 at 02:35:24PM +0800, Langyan Ye wrote:
> > Parade-tc3408 requires reset to pull down time greater than 10ms,
> > so the configuration post_power_delay_ms is 10, and the chipset
> > initial time is required to be greater than 300ms,
> > so the post_gpio_reset_on_delay_ms is set to 300.
> >
> > Signed-off-by: Langyan Ye <yelangyan@huaqin.corp-partner.google.com>
> > Reviewed-by: Douglas Anderson <dianders@chromium.org>
>
> Jiri, Benjamin, another I2C hid with bindings...

I guess maybe this could go through the input tree, but it needs
either Jiri's or Benjamin's ack? Is that the plan?

-Doug