From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mikko Perttunen Subject: Re: [PATCH 2/3] ARM: tegra: Add PMC thermtrip programming to Jetson TK1 device tree Date: Wed, 13 Aug 2014 11:06:14 +0300 Message-ID: <53EB1C76.2000702@nvidia.com> References: <1407226380-747-1-git-send-email-mperttunen@nvidia.com> <1407226380-747-3-git-send-email-mperttunen@nvidia.com> <20140813073736.GB17466@ulmo> <53EB1932.9040601@nvidia.com> <20140813080324.GC7735@ulmo> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20140813080324.GC7735@ulmo> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Thierry Reding Cc: "swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-tegra@vger.kernel.org On 13/08/14 11:03, Thierry Reding wrote: > * PGP Signed by an unknown key > > On Wed, Aug 13, 2014 at 10:52:18AM +0300, Mikko Perttunen wrote: >> On 13/08/14 10:37, Thierry Reding wrote: >>>> Old Signed by an unknown key >>> >>> On Tue, Aug 05, 2014 at 11:12:59AM +0300, Mikko Perttunen wrote: >>>> This adds the required information to reset the board during an overheating >>>> situation to the Jetson TK1 device tree. The thermal reset is handled by the >>>> PMC by sending an I2C message to the PMIC. The entries specify the I2C >>>> message to be sent. >>>> >>>> Signed-off-by: Mikko Perttunen >>>> --- >>>> arch/arm/boot/dts/tegra124-jetson-tk1.dts | 5 +++++ >>>> 1 file changed, 5 insertions(+) >>>> >>>> diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1.dts b/arch/arm/boot/dts/tegra124-jetson-tk1.dts >>>> index 624b0fb..ee178c4 100644 >>>> --- a/arch/arm/boot/dts/tegra124-jetson-tk1.dts >>>> +++ b/arch/arm/boot/dts/tegra124-jetson-tk1.dts >>>> @@ -1617,6 +1617,11 @@ >>>> nvidia,core-pwr-off-time = <61036>; >>>> nvidia,core-power-req-active-high; >>>> nvidia,sys-clock-req-active-high; >>>> + >>>> + nvidia,thermtrip-pmu-i2c-addr = <0x40>; >>>> + nvidia,thermtrip-i2c-controller = <4>; >>>> + nvidia,thermtrip-reg-addr = <0x36>; >>>> + nvidia,thermtrip-reg-data = <0x2>; >>> >>> Given the number of properties that this can potentially have, I wonder >>> if perhaps it would be a good idea to put this into a subnode, like >>> this: >>> >>> thermtrip { >>> pmu-i2c-addr = <0x40>; >>> i2c-controller = <4>; >>> ... >>> }; >> >> I guess that'd look a bit nicer. > > Mind you, this may be somewhat on the edge of what's considered good > practice for DT content, so maybe wait for a second opinion before going > ahead with this. > > I don't have any objections to a set of nvidia,thermtrip-* properties, I > just think it's fairly redundant to keep repeating that prefix (and it > causes ugliness in drivers, too). Hmm, ok. I'll fix the other stuff first. > > Thierry > > * Unknown Key > * 0x7F3EB3A1 >