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Mon, 14 Feb 2022 07:57:14 -0800 (PST) Date: Mon, 14 Feb 2022 07:57:13 -0800 From: Guenter Roeck To: Chris Packham Cc: andrew@lunn.ch, gregory.clement@bootlin.com, robh+dt@kernel.org, wim@linux-watchdog.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org Subject: Re: [PATCH 2/2] watchdog: orion_wdt: support pretimeout on Armada-XP Message-ID: <20220214155713.GA275186@roeck-us.net> References: <20220211003257.2037332-1-chris.packham@alliedtelesis.co.nz> <20220211003257.2037332-3-chris.packham@alliedtelesis.co.nz> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220211003257.2037332-3-chris.packham@alliedtelesis.co.nz> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220214_075717_286506_36ED45D7 X-CRM114-Status: GOOD ( 19.30 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Feb 11, 2022 at 01:32:57PM +1300, Chris Packham wrote: > Commit e07a4c79ca75 ("watchdog: orion_wdt: use timer1 as a pretimeout") > added support for a pretimeout on Armada-38x variants. Because the > Armada-XP variants use armada370_start/armada370_stop (due to missing an > explicit RSTOUT mask bit for the watchdog). Add the required pretimeout > support to armada370_start/armada370_stop for Armada-XP. > > Signed-off-by: Chris Packham > Reviewed-by: Gregory CLEMENT Reviewed-by: Guenter Roeck > --- > drivers/watchdog/orion_wdt.c | 13 +++++++++---- > 1 file changed, 9 insertions(+), 4 deletions(-) > > diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c > index 127eefc9161d..e25e6bf4647f 100644 > --- a/drivers/watchdog/orion_wdt.c > +++ b/drivers/watchdog/orion_wdt.c > @@ -238,8 +238,10 @@ static int armada370_start(struct watchdog_device *wdt_dev) > atomic_io_modify(dev->reg + TIMER_A370_STATUS, WDT_A370_EXPIRED, 0); > > /* Enable watchdog timer */ > - atomic_io_modify(dev->reg + TIMER_CTRL, dev->data->wdt_enable_bit, > - dev->data->wdt_enable_bit); > + reg = dev->data->wdt_enable_bit; > + if (dev->wdt.info->options & WDIOF_PRETIMEOUT) > + reg |= TIMER1_ENABLE_BIT; > + atomic_io_modify(dev->reg + TIMER_CTRL, reg, reg); > > /* Enable reset on watchdog */ > reg = readl(dev->rstout); > @@ -312,7 +314,7 @@ static int armada375_stop(struct watchdog_device *wdt_dev) > static int armada370_stop(struct watchdog_device *wdt_dev) > { > struct orion_watchdog *dev = watchdog_get_drvdata(wdt_dev); > - u32 reg; > + u32 reg, mask; > > /* Disable reset on watchdog */ > reg = readl(dev->rstout); > @@ -320,7 +322,10 @@ static int armada370_stop(struct watchdog_device *wdt_dev) > writel(reg, dev->rstout); > > /* Disable watchdog timer */ > - atomic_io_modify(dev->reg + TIMER_CTRL, dev->data->wdt_enable_bit, 0); > + mask = dev->data->wdt_enable_bit; > + if (wdt_dev->info->options & WDIOF_PRETIMEOUT) > + mask |= TIMER1_ENABLE_BIT; > + atomic_io_modify(dev->reg + TIMER_CTRL, mask, 0); > > return 0; > } _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel