extcon: arizona: Raise minimum microphone impedance for HPDET method

Ensure greater reliability by increasing the minimum threashold for
identifying a microphone.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 132bc99..2f0bd49 100644 (file)
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -519,7 +519,7 @@ static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading)
                 * measure the mic as high impedance.
                 */
                if ((info->hpdet_res[0] > info->hpdet_res[1] * 2) ||
-                   (id_gpio && info->hpdet_res[2] > 10)) {
+                   (id_gpio && info->hpdet_res[2] > 1257)) {
                        dev_dbg(arizona->dev, "Detected mic\n");
                        info->mic = true;
                        info->detecting = true;