Re: [PATCH v2 3/5] mfd: palmas: Reset the POWERHOLD mux during power off
From: Lee Jones <hidden>
Date: 2017-03-24 11:38:25
Also in:
linux-gpio, linux-omap, lkml
On Fri, 24 Mar 2017, Keerthy wrote:
On Tuesday 22 November 2016 06:33 PM, Lee Jones wrote:quoted
On Thu, 10 Nov 2016, Keerthy wrote:quoted
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> --- Changes in v2: * Changed pr_err to dev_err * removed redundant boolean variable override-powerhold drivers/mfd/palmas.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)Applied, thanks.Lee Jones, For some strange reason this patch is missing! The other patch in the series is applied through mfd tree but somehow this particular patch is missed out. https://patchwork.kernel.org/patch/9420631/ is applied. https://patchwork.kernel.org/patch/9420655/ is not. I tried applying this very patch and it applies cleanly on the next branch. Let me know if you want me to send this again on top of latest next branch.
Sorry about this. Reapplied and re-pushed.
quoted
quoted
diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c index ee9e9ea..da90124 100644 --- 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); + } slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE); addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_DEV_CTRL);
-- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog