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Commit 523bc382 authored by Sundar Iyer's avatar Sundar Iyer Committed by Linus Walleij
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mfd/tc3589x: undo gpio module reset during chip init 



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.

Acked-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: default avatarSundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@stericsson.com>
parent bd77efd0

drivers/mfd/tc3589x.c

+6 −3
Original line number Diff line number Diff line
@@ -231,12 +231,15 @@ 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;