| From | Lothar Waßmann <> | Subject | [PATCHv4 3/5] Input: edt-ft5x06: Adjust delays to conform datasheet | Date | Wed, 19 Mar 2014 14:09:21 +0100 |
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The FT5x06 datasheet specifies a minimum reset width of 5ms and a delay between deassertion of reset and start of reporting of 300ms. Adjust the delays to conform to the datasheet.
With the original delays I sometimes experienced communication timeouts when initializing the controller.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> --- drivers/input/touchscreen/edt-ft5x06.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 257a1c8..27dccfc 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -652,9 +652,9 @@ static int edt_ft5x06_ts_reset(struct i2c_client *client, return error; } - mdelay(50); + mdelay(5); gpio_set_value(tsdata->reset_pin, 1); - mdelay(100); + msleep(300); } return 0; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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