This is a note to let you know that I've just added the patch titled
mfd: palmas: Reset the POWERHOLD mux during power off
to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: mfd-palmas-reset-the-powerhold-mux-during-power-off.patch and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Thu Mar 22 15:16:04 CET 2018
From: Keerthy j-keerthy@ti.com Date: Thu, 10 Nov 2016 10:39:18 +0530 Subject: mfd: palmas: Reset the POWERHOLD mux during power off
From: Keerthy j-keerthy@ti.com
[ Upstream commit 85fdaf8eb9bbec1f0f8a52fd5d85659d60738816 ]
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 Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mfd/palmas.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
--- a/drivers/mfd/palmas.c +++ b/drivers/mfd/palmas.c @@ -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); + }
if (!palmas_dev) return;
Patches currently in stable-queue which might be from j-keerthy@ti.com are
queue-3.18/mfd-palmas-reset-the-powerhold-mux-during-power-off.patch