Messages in this thread Patch in this message | | | From | Cong Yang <> | Subject | [v2 1/2] HID: i2c-hid: elan: Add ili9882t timing | Date | Sat, 20 May 2023 13:06:48 +0800 |
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The ili9882t is a TDDI IC ((Touch with Display Driver)). It requires the panel reset gpio to be high before i2c commands. Use a longer delay in post_power_delay_ms to ensure the poweron sequence.
Signed-off-by: Cong Yang <yangcong5@huaqin.corp-partner.google.com> --- drivers/hid/i2c-hid/i2c-hid-of-elan.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/hid/i2c-hid/i2c-hid-of-elan.c b/drivers/hid/i2c-hid/i2c-hid-of-elan.c index 76ddc8be1cbb..dd2435270e73 100644 --- a/drivers/hid/i2c-hid/i2c-hid-of-elan.c +++ b/drivers/hid/i2c-hid/i2c-hid-of-elan.c @@ -105,8 +105,15 @@ static const struct elan_i2c_hid_chip_data elan_ekth6915_chip_data = { .hid_descriptor_address = 0x0001, }; +static const struct elan_i2c_hid_chip_data ilitek_ili9882t_chip_data = { + .post_power_delay_ms = 200, + .post_gpio_reset_delay_ms = 180, + .hid_descriptor_address = 0x0001, +}; + static const struct of_device_id elan_i2c_hid_of_match[] = { { .compatible = "elan,ekth6915", .data = &elan_ekth6915_chip_data }, + { .compatible = "ilitek,ili9882t", .data = &ilitek_ili9882t_chip_data }, { } }; MODULE_DEVICE_TABLE(of, elan_i2c_hid_of_match); -- 2.25.1
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