[PATCH V4 3/4] ARM: bcm2835: add thermal node to device-tree of bcm283x

Martin Sperl kernel at martin.sperl.org
Fri Sep 9 07:58:05 PDT 2016


> On 09.09.2016, at 16:25, Stefan Wahren <stefan.wahren at i2se.com> wrote:
> 
>> Am 09.09.2016 um 09:49 schrieb kernel at martin.sperl.org:
>> From: Martin Sperl <kernel at martin.sperl.org>
>> 
>> Add the node for the thermal sensor of the bcm2835-soc
>> to the device tree.
>> 
>> Signed-off-by: Martin Sperl <kernel at martin.sperl.org>
>> Reviewed-by: Eric Anholt <eric at anholt.net>
>> ---
>> arch/arm/boot/dts/bcm283x.dtsi | 6 ++++++
>> 1 file changed, 6 insertions(+)
>> 
>> diff --git a/arch/arm/boot/dts/bcm283x.dtsi b/arch/arm/boot/dts/bcm283x.dtsi
>> index b982522..e2e3a46 100644
>> --- a/arch/arm/boot/dts/bcm283x.dtsi
>> +++ b/arch/arm/boot/dts/bcm283x.dtsi
>> @@ -186,6 +186,12 @@
>>            interrupts = <2 14>; /* pwa1 */
>>        };
>> 
>> +        thermal: thermal at 0x7e212000 {
>> +            compatible = "brcm,bcm2835-thermal";
>> +            reg = <0x7e212000 0x8>;
>> +            clocks = <&clocks BCM2835_CLOCK_TSENS>;
>> +        };
>> +
> 
> Since the driver handles 3 different SoC (2835, 2836, 2837). This node
> should be defined in the SoC specific dtsi files, because the BCM2836
> includes bcm283x.dtsi too.
> 
> Be aware the patch for bcm2837 must go to ARM64.

I can not really follow:
* the node is defined in the dtsi included by all 3 soc,
   and it is available on all so it sits where for example
   spi0 or uart0 is located
* as for arm64: this describes the registers that are
   identical for arm and arm64 and the bcm2837.dtsi
   is also including ../../../../arm/boot/dts/bcm283x.dtsi

So what is the problem?

Martin

P.s the patches apply cleanly against master.




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