linux-kernel - Re: [PATCH 1/3] thermal: bcm281xx: Add thermal driver

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Message-ID: <52460B90.5060907@broadcom.com>
Date:	Fri, 27 Sep 2013 15:49:52 -0700
From:	"Wendy Ng" <wendy.ng@...adcom.com>
To:	"Matt Porter" <matt.porter@...aro.org>
cc:	"Rob Herring" <rob.herring@...xeda.com>,
	"Stephen Warren" <swarren@...dotorg.org>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, "Christian Daudt" <bcm@...thebug.org>,
	"Markus Mayer" <mmayer@...adcom.com>
Subject: Re: [PATCH 1/3] thermal: bcm281xx: Add thermal driver


On 9/25/2013 12:26 PM, Matt Porter wrote:
> On Mon, Sep 23, 2013 at 10:51:36AM -0700, Wendy Ng wrote:
>> This adds the support for reading out temperature from Broadcom bcm281xx
>> SoCs.
>>
>> Signed-off-by: Wendy Ng <wendy.ng@...adcom.com>
>> Reviewed-by: Markus Mayer <mmayer@...adcom.com>
>> Reviewed-by: Christian Daudt <csd@...adcom.com>
>> ---
>>   .../bindings/thermal/bcm-kona-thermal.txt          |   18 +++
>>   drivers/thermal/Kconfig                            |   10 ++
>>   drivers/thermal/Makefile                           |    1 +
>>   drivers/thermal/bcm_thermal.c                      |  170 ++++++++++++++++++++
>>   4 files changed, 199 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/thermal/bcm-kona-thermal.txt
>>   create mode 100644 drivers/thermal/bcm_thermal.c
>>
>> diff --git a/Documentation/devicetree/bindings/thermal/bcm-kona-thermal.txt b/Documentation/devicetree/bindings/thermal/bcm-kona-thermal.txt
>> new file mode 100644
>> index 0000000..acca99e
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/thermal/bcm-kona-thermal.txt
>> @@ -0,0 +1,18 @@
>> +* Broadcom Kona Thermal Management Unit
>> +
>> +This version is for the BCM281xx family of SoCs.
>> +
>> +Required properties:
>> +- compatible : "brcm,bcm11351-thermal", "brcm,kona-thermal"
>> +- reg : Address range of the thermal register
>> +- thermal-name: this entry must be specified and it will be passed into
>> +thermal_zone_device_register().  This name will also be reported under Hwmon
>> +sysfs 'name' attribute.
>> +
>> +Example:
>> +	thermal@...08000 {
>> +		compatible = "brcm,bcm11351-thermal", "brcm,kona-thermal";
>> +		reg = <0x34008000 0x0024>;
>> +		thermal-name = "bcm_kona_therm";
>> +		status = "disabled";
>> +	};
>> diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
>> index dbfc390..7f823f0 100644
>> --- a/drivers/thermal/Kconfig
>> +++ b/drivers/thermal/Kconfig
>> @@ -134,6 +134,16 @@ config KIRKWOOD_THERMAL
>>   	  Support for the Kirkwood thermal sensor driver into the Linux thermal
>>   	  framework. Only kirkwood 88F6282 and 88F6283 have this sensor.
>>   
>> +config BCM_THERMAL
>> +	tristate "Temperature sensor on Broadcom BCM281xx family of SoCs"
>> +	depends on ARCH_BCM
> Hi Wendy,
>
> I just noticed that, depending on acceptance, this could collide with
> Christian's ARCH_BCM->ARCH_BCM_MOBILE rename that is expected to go into
> 3.13. I'm not sure if this series is targeted for 3.13 (due to the discussion
> about Eduardo's subsystem changes that impact it). If it is, you might
> want to rebase on Christian's rename series
> http://www.spinics.net/lists/arm-kernel/msg274963.html and use
> ARCH_BCM_MOBILE here.
>
> -Matt
Hi Matt,

I have uploaded v2 of this thermal driver patch series to make it 
compatible with Christian's
ARCH_BCM->ARCH_BCM_MOBILE changes.

Thanks for pointing this out!

>> +	default y
>> +	help
>> +	  If you say yes here you get support for TMU (Thermal Management
>> +	  Unit) on Broadcom BCM281xx family of SoCs. This provides thermal
>> +	  monitoring of CPU clusters, graphics, and SoC glue, but does not
>> +	  include monitoring of charger temperature.
>

-- 
Best regards,
-Wendy


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