From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Jones Subject: Re: [PATCH v2 3/5] mfd: palmas: Reset the POWERHOLD mux during power off Date: Fri, 24 Mar 2017 11:30:14 +0000 Message-ID: <20170324113014.fpkfoc5n7qpo2l5d@dell> References: <1478754560-27923-1-git-send-email-j-keerthy@ti.com> <1478754560-27923-4-git-send-email-j-keerthy@ti.com> <20161122130308.GE316@dell.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Keerthy Cc: tony@atomide.com, robh+dt@kernel.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, nm@ti.com, t-kristo@ti.com List-Id: linux-gpio@vger.kernel.org On Fri, 24 Mar 2017, Keerthy wrote: > > > On Tuesday 22 November 2016 06:33 PM, Lee Jones wrote: > > On Thu, 10 Nov 2016, Keerthy wrote: > > > >> 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 > >> --- > >> > >> 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. > >> 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