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The touch controller needs some time to wake-up after setting the wake-up gpio. Without having a delay after wake-up probing regularly fails in edt_ft5x06_ts_identify() with an error (i.e. EREMOTEIO) that was caused by a failed i2c transfer. The datasheet sets the wake-up time to 5 ms, although it is not entirely clear. Signed-off-by: Philipp Puschmann <p.puschmann@pironex.com> Link: https://lore.kernel.org/r/20230505115823.545803-1-p.puschmann@pironex.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>