From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Langyan Ye <yelangyan@huaqin.corp-partner.google.com>
Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
jikos@kernel.org, bentiss@kernel.org, dianders@chromium.org,
linux-input@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V3 RESEND 0/2] Add tc3408 bindings and timing
Date: Thu, 26 Feb 2026 08:06:25 -0800 [thread overview]
Message-ID: <aaBvauUqgMgGYwhA@google.com> (raw)
In-Reply-To: <20260108063524.742464-1-yelangyan@huaqin.corp-partner.google.com>
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@huaqin.corp-partner.google.com/
>
> 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@huaqin.corp-partner.google.com/
>
> 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
prev parent reply other threads:[~2026-02-26 16:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-08 6:35 [PATCH V3 RESEND 0/2] Add tc3408 bindings and timing Langyan Ye
2026-01-08 6:35 ` [PATCH V3 RESEND 1/2] dt-bindings: input: Add Parade TC3408 touchscreen controller Langyan Ye
2026-01-08 6:35 ` [PATCH V3 RESEND 2/2] HID: i2c-hid: elan: Add parade-tc3408 timing Langyan Ye
2026-01-21 22:40 ` Dmitry Torokhov
2026-01-29 16:50 ` Doug Anderson
2026-02-26 4:59 ` Dmitry Torokhov
2026-02-26 14:52 ` Jiri Kosina
2026-02-26 16:06 ` Dmitry Torokhov [this message]
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