Commit 85fdaf8e authored Nov 10, 2016 by Keerthy Committed by Lee Jones Apr 27, 2017

mfd: palmas: Reset the POWERHOLD mux during power off



POWERHOLD signal has higher priority  over the DEV_ON bit.
So power off will not happen if the POWERHOLD is held high.
Hence reset the MUX to GPIO_7 mode to release the POWERHOLD
and the DEV_ON bit to take effect to power off the PMIC.

PMIC Power off happens in dire situations like thermal shutdown
so irrespective of the POWERHOLD setting go ahead and turn off
the powerhold.  Currently poweroff is broken on boards that have
powerhold enabled. This fixes poweroff on those boards.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

parent f5139c27

drivers/mfd/palmas.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -430,6 +430,20 @@ static void palmas_power_off(void)
		{
		unsigned int addr;
		int ret, slave;
		struct device_node *np = palmas_dev->dev->of_node;

		if (of_property_read_bool(np, "ti,palmas-override-powerhold")) {
		addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
		PALMAS_PRIMARY_SECONDARY_PAD2);
		slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);

		ret = regmap_update_bits(palmas_dev->regmap[slave], addr,
		PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK, 0);
		if (ret)
		dev_err(palmas_dev->dev,
		"Unable to write PRIMARY_SECONDARY_PAD2 %d\n",
		ret);
		}

		slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
		addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_DEV_CTRL);

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