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From: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
To: Keerthy <j-keerthy@ti.com>
Cc: Eduardo Valentin <edubezval@gmail.com>,
	Zhang Rui <rui.zhang@intel.com>,
	linux-pm@vger.kernel.org, linux-omap@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 01/14] thermal: ti-soc-thermal: fix TALERT IRQ handling for DRA752
Date: Fri, 27 Jul 2018 16:30:22 +0200	[thread overview]
Message-ID: <1926566.4EVPFnjd9v@amdc3058> (raw)
In-Reply-To: <e9452238-319e-ad4b-5e9a-df3cd0d25ae8@ti.com>

On Friday, July 27, 2018 10:13:51 AM Keerthy wrote:
> 
> On Wednesday 25 July 2018 07:57 PM, Bartlomiej Zolnierkiewicz wrote:
> > On Wednesday, July 11, 2018 07:49:41 AM J, KEERTHY wrote:
> >>
> >> On 5/14/2018 5:12 PM, Bartlomiej Zolnierkiewicz wrote:
> >>> .report_temperature is not set in dra752_data which
> >>> results in temperature updates not being propagated by
> >>> ti_bandgap_talert_irq_handler() (it doesn't make much
> >>> sense to handle TALERT IRQ without reporting temperature
> >>> updates to the thermal core). Fix it.
> >>
> >> ATM no one is using TALERT as the thermal software polls on the 
> >> temperature. No real benefit from TALERT.
> >>
> >> TALERT is set at different temperature and software polling thresholds 
> >> come from Device tree and i believe its best for software to go by 
> >> polling and then act on trip points.
> > 
> > Could you please explain what do you mean by "no one is using
> > TALERT"?
> > 
> > The code in ti_bandgap_probe() sets TALERT thresholds and requests
> > IRQ if the TI_BANDGAP_FEATURE_TALERT feature flag is set (and this
> > flag is set in omap4460_data, omap4470_data, omap5430_data and
> > dra752_data).
> 
> The software thresholds and the polling takes care of reducing the
> temperature. What i actually meant was we never relied on talert and the
> polling takes care of keeping a check on the temperature.

OK I see, maybe TALERT handling can be removed altogether?

If not can we make TALERT behavior on DRA752 consistent with other
chipsets supporting TALERT (this is useful for code unification
between OMAP5430 and DRA752)?

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics


  parent reply	other threads:[~2018-07-27 14:30 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20180514114255epcas1p438ea8d32c2b7fd40b86afb25c9c8f2cf@epcas1p4.samsung.com>
2018-05-14 11:42 ` [PATCH 00/14] thermal: ti-soc-thermal: simplify the driver a bit Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114302epcas1p1890ad3296302900a736262b5d67aa10e@epcas1p1.samsung.com>
2018-05-14 11:42     ` [PATCH 01/14] thermal: ti-soc-thermal: fix TALERT IRQ handling for DRA752 Bartlomiej Zolnierkiewicz
2018-07-11  2:19       ` J, KEERTHY
2018-07-11  2:19         ` J, KEERTHY
     [not found]         ` <CGME20180725142707eucas1p25bf4bc7b63babc0732db13ae9a79d983@eucas1p2.samsung.com>
2018-07-25 14:27           ` Bartlomiej Zolnierkiewicz
2018-07-27  4:43             ` Keerthy
2018-07-27  4:43               ` Keerthy
     [not found]               ` <CGME20180727143023eucas1p1adfe1860327829e7cf39bcdd3290d11c@eucas1p1.samsung.com>
2018-07-27 14:30                 ` Bartlomiej Zolnierkiewicz [this message]
     [not found]   ` <CGME20180514114308epcas2p3bba580c5500889f22d50549994b227db@epcas2p3.samsung.com>
2018-05-14 11:42     ` [PATCH 02/14] thermal: ti-soc-thermal: fix comment in omap5xxx-bandgap.h Bartlomiej Zolnierkiewicz
2018-07-11  2:21       ` J, KEERTHY
2018-07-11  2:21         ` J, KEERTHY
     [not found]   ` <CGME20180514114312epcas1p19fffd35baae3018f47df0fe31ca1b1b0@epcas1p1.samsung.com>
2018-05-14 11:42     ` [PATCH 03/14] thermal: ti-soc-thermal: fix comments in omap4-thermal-data.c Bartlomiej Zolnierkiewicz
2018-07-11  2:27       ` J, KEERTHY
2018-07-11  2:27         ` J, KEERTHY
     [not found]   ` <CGME20180514114319epcas1p1921a83c1baaaf1e6f94283f462022dc5@epcas1p1.samsung.com>
2018-05-14 11:42     ` [PATCH 04/14] thermal: ti-soc-thermal: cleanup COUNTER feature handling for OMAP5 Bartlomiej Zolnierkiewicz
2018-07-11  3:38       ` J, KEERTHY
2018-07-11  3:38         ` J, KEERTHY
     [not found]         ` <CGME20180725142832eucas1p26a8b5a1226b1043d57332b70ba5caaa0@eucas1p2.samsung.com>
2018-07-25 14:28           ` Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114326epcas2p2e27987b5be7a1fe614114466c6cf30f8@epcas2p2.samsung.com>
2018-05-14 11:42     ` [PATCH 05/14] thermal: ti-soc-thermal: remove redundant methods from struct ti_bandgap_data Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114331epcas2p3d52dea1f2feda21ff2cce1548f3f5bd4@epcas2p3.samsung.com>
2018-05-14 11:42     ` [PATCH 06/14] thermal: ti-soc-thermal: remove ->threshold_[thot,tcold]_mask fields Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114334epcas1p4c1b268d8253cda369826e67b06b4c28b@epcas1p4.samsung.com>
2018-05-14 11:42     ` [PATCH 07/14] thermal: ti-soc-thermal: remove ->tshut_[hot,cold]_mask fields Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114337epcas1p1ba67790ed771ab09c0be25712c8b385f@epcas1p1.samsung.com>
2018-05-14 11:42     ` [PATCH 08/14] thermal: ti-soc-thermal: use common struct temp_sensor_data for OMAP5 Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114340epcas2p10a9a4aad3064ad752cd2bea456581a98@epcas2p1.samsung.com>
2018-05-14 11:42     ` [PATCH 09/14] thermal: ti-soc-thermal: use common struct temp_sensor_data for DRA752 Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114343epcas2p4280b4ff50611a223a1b3ae37dbe743ee@epcas2p4.samsung.com>
2018-05-14 11:42     ` [PATCH 10/14] thermal: ti-soc-thermal: use OMAP5 defines " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114346epcas1p4a59f6760861791ae53eac48975c9172a@epcas1p4.samsung.com>
2018-05-14 11:42     ` [PATCH 11/14] thermal: ti-soc-thermal: use OMAP5 register tables " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114350epcas1p2d29cfa8de6b19096d91362c91feb2dc5@epcas1p2.samsung.com>
2018-05-14 11:42     ` [PATCH 12/14] thermal: ti-soc-thermal: add ->adc_to_mcelsius method Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114355epcas2p4c24f87c5a76ff3d3e9ed319ddc2e78ad@epcas2p4.samsung.com>
2018-05-14 11:42     ` [PATCH 13/14] thermal: ti-soc-thermal: use short int for *_adc_to_temp[] conversion tables Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20180514114400epcas2p193e6f6643171575aab079329bed79c2c@epcas2p1.samsung.com>
2018-05-14 11:42     ` [PATCH 14/14] thermal: ti-soc-thermal: remove SoC family config options Bartlomiej Zolnierkiewicz

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