Skip putting the GPIO module into a reset during the chip init. This makes sure to preserve any existing GPIO configurations done by pre-kernel boot code. Signed-off-by: Sundar Iyer <sundar.iyer@xxxxxxxxxxxxxx> --- drivers/mfd/tc3589x.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/mfd/tc3589x.c b/drivers/mfd/tc3589x.c index e173f33..fd206fd 100644 --- a/drivers/mfd/tc3589x.c +++ b/drivers/mfd/tc3589x.c @@ -247,12 +247,15 @@ static int tc3589x_chip_init(struct tc3589x *tc3589x) dev_info(tc3589x->dev, "manufacturer: %#x, version: %#x\n", manf, ver); - /* Put everything except the IRQ module into reset */ + /* + * Put everything except the IRQ module into reset; + * also spare the GPIO module for any pin initialization + * done during pre-kernel boot + */ ret = tc3589x_reg_write(tc3589x, TC3589x_RSTCTRL, TC3589x_RSTCTRL_TIMRST | TC3589x_RSTCTRL_ROTRST - | TC3589x_RSTCTRL_KBDRST - | TC3589x_RSTCTRL_GPIRST); + | TC3589x_RSTCTRL_KBDRST); if (ret < 0) return ret; -- 1.7.2.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
