[PATCH v5 0/2] Add ili9882t bindings and timing

[Cong Yang]

Add bindings for Ilitek. The ili9882t touch screen chip same as
Elan eKTH6915 controller has a reset gpio. The difference is that
ilitek9882 needs to use vccio-supply instead of vcc33-supply. 
>From Dmitry suggestion, it would make more sense to distinguish the
binging of ili9882 and eKTH6915.

>From The datasheet specifies there should be 60ms between touch SDA
sleep and panel RESX. so we can add the 65 ms delay in i2c_hid_core_suspend.

Changes in v5:
- PATCH 1/2: Add panel as a required in property and examples.
- PATCH 2/2: Set a NULL to ili9882t_chip_data for vcc33-supply, then not use vcc33 regulator.
- Link to v4: https://lore.kernel.org/all/20230608130147.2835818-1-yangcong5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/

Changes in v4:
- PATCH 1/2: Remove compatible items and add reset maxItems.
- PATCH 1/2: Refer to the panel description in Doug serias[1].
  [1] https://lore.kernel.org/all/20230607144931.v2.1.Id68e30343bb1e11470582a9078b086176cfec46b@changeid/ 
- PATCH 2/2: Set a "null" to ili9882t_chip_data for vcc33-supply, then using dummy regulator.
- Link to v3: https://lore.kernel.org/all/20230607133458.4075667-1-yangcong5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/

Changes in v3:
- PATCH 1/2: Introduce bindings for Ilitek.
- Link to v2: https://lore.kernel.org/all/20230605060524.1178164-1-yangcong5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/

Changes in v2:
- PATCH 1/2: fix ran make dt_binding_check warnings/errors.
- PATCH 1/2: remove oneOf,just enum.
- Link to v1: https://lore.kernel.org/all/20230602140948.2138668-1-yangcong5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/

Cong Yang (2):
  dt-bindings: HID: i2c-hid: ilitek: Introduce bindings for Ilitek
    ili9882t
  HID: i2c-hid: elan: Add ili9882t timing

 .../bindings/input/ilitek,ili9882t.yaml       | 67 +++++++++++++++++++
 drivers/hid/i2c-hid/i2c-hid-of-elan.c         | 50 ++++++++++----
 2 files changed, 105 insertions(+), 12 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/input/ilitek,ili9882t.yaml

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2.25.1