[PATCH 0/4] Use just one DTS file for all Espressobin variants

[Stefan Roese]

On 02.12.20 01:33, Pali Rohár wrote:
> On Wednesday 25 November 2020 19:20:06 Pali Rohár wrote:
>> This patch series change Espressobin code to use in U-Boot just one DTS
>> file for all Espressobin variants. Therefore DT compatible string
>> globalscale,espressobin-emmc is not used anymore as it is not needed.
>>
>> It means that setup and compilation of U-Boot for Espressobin is less
>> complicated and more simple. As there is no need to check for HW details
>> and just one U-Boot binary would work for all Espressobin variants.
>>
>> First two patches just revert previous eMMC support and next two patches
>> add support for eMMC in way that just one DTS file is used and fdtfile
>> env variable is correctly set for any Espressobin variant.
>>
>> We have tested that fdtfile env variable is correctly set on Espressobin
>> variants with eMMC, without eMMC, with DDR3 RAM and also with DDR4 RAM.
>> Also that eMMC is working on Espressobin variant with eMMC.
> 
> Stefan, could you please review this patch series?

I like the approach in general to simplify things. One comment though:

AFAICT, Linux uses multiple dts/dtsi files for espressobin. So your
approach to move to one single file contradicts the (planned after
comphy conversion) move to the Linux dts/dtsi files.

> Andre, are you fine with these changes? I would like to get your
> acknowledgment or review comment what needs to be changed or improved as
> this patch series basically rework your code (which is first reverted
> and them implemented in different way).

Yes. Andre please also comment on this.

Thanks,
Stefan

>> Pali Rohár (4):
>>    Revert "arm64: dts: armada-3720-espressobin: split common parts to
>>      .dtsi"
>>    Revert "arm64: dts: a3720: add support for espressobin with populated
>>      emmc"
>>    arm: mvebu: Espressobin: Add support for emmc into dts file
>>    arm: mvebu: Espressobin: Detect presence of emmc at runtime
>>
>>   arch/arm/dts/Makefile                         |   1 -
>>   arch/arm/dts/armada-3720-espressobin-emmc.dts |  44 -----
>>   arch/arm/dts/armada-3720-espressobin.dts      | 186 +++++++++++++++++-
>>   arch/arm/dts/armada-3720-espressobin.dtsi     | 167 ----------------
>>   board/Marvell/mvebu_armada-37xx/board.c       |   6 +-
>>   doc/README.marvell                            |   7 +-
>>   6 files changed, 186 insertions(+), 225 deletions(-)
>>   delete mode 100644 arch/arm/dts/armada-3720-espressobin-emmc.dts
>>   delete mode 100644 arch/arm/dts/armada-3720-espressobin.dtsi
>>
>> -- 
>> 2.20.1
>>


Viele Grüße,
Stefan

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