[U-Boot] [PATCH] phycore-pcl060: U-boot support for Phytec phyCORE PCL060

[Marek Vasut]

On 4/19/19 5:06 PM, Parthiban Nallathambi wrote:
> Hello Marek,
> 
> On 4/19/19 3:35 PM, Marek Vasut wrote:
>> On 4/19/19 3:18 PM, Parthiban Nallathambi wrote:
>>
>> Hi,
>>
>> [...]
>>
>>>>> diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
>>>>> index d29f1ca0b5..9336439340 100644
>>>>> --- a/arch/arm/mach-omap2/Kconfig
>>>>> +++ b/arch/arm/mach-omap2/Kconfig
>>>>> @@ -186,6 +186,7 @@ source "board/ti/am43xx/Kconfig"
>>>>>  source "board/ti/am335x/Kconfig"
>>>>>  source "board/compulab/cm_t335/Kconfig"
>>>>>  source "board/compulab/cm_t43/Kconfig"
>>>>> +source "board/phytec/phycore_pcl060/Kconfig"
>>>>
>>>> Here [1] it says the name of the SoM is PCM-060 , what is PCL-060 ?
>>>>
>>>> [1]
>>>> https://www.phytec.eu/product-eu/system-on-modules/phycore-am335x-download/
>>>>  [...]
>>>
>>> This differs only by the connector. PCM variants are pluggable and PCL variants
>>> are direct soliderable to the carrier board.
>>>
>>> Copied from [1]:
>>> The PCL-060 System On Module is a connector-less, BGA style variant of the
>>> PCM-060/phyCORE-AM335x R2 SOM. Unlike traditional Phytec SOM products that support
>>> high density connectors, the PCL-060 SOM is directly soldered down to the
>>> phyBOARD-Wega AM335x using Phytec's Direct Solder Connect technology (DSC). This
>>> solution offers an ultra-low cost Single Board Computer for the AM335x processor, while
>>> maintaining most of the advantages of the SOM concept.
>>>
>>> [1] https://www.phytec.de/fileadmin/user_upload/downloads/Manuals/L-845e_1.pdf
>>
>> Ah damn, this looks like a consistency problem is coming up. We have
>> multiple PCM* SoMs in U-Boot, one PCL* SoM and now another PCL/PCM SoM.
>> But the PCL063 isn't even manufactured in variant with connectors, so I
>> guess we can ignore that one.
>>
>> I wonder whether we should stick to PCM* for all of the Phytec SoMs for
>> consistency sake and document that PCL060 is also supported or maybe
>> there's a better way ?
> 
> Does PCX/PCx makes sense? But we have the same problem with variscite [1] SoM's
> (either SODIMM or solderable).
> 
> [1] https://lists.denx.de/pipermail/u-boot/2019-April/365667.html

PCX would introduce another option, in addition to PCM/PCL, one which
cannot be easily found on the internet, so I'd like to avoid that. I
am banking toward the sticking with PCM where possible (simply because
that's what $searchengine spits out first when you look for that SoM,
and because we already have plenty of PCM-nnn SoMs), but maybe someone
has a better idea .

-- 
Best regards,
Marek Vasut