Re: [PATCH v4 0/4] memory: omap-gpmc: Add AM64 SoC support

[Grygorii Strashko <grygorii.strashko@ti.com>]

On 15/04/2022 11:59, Romain Naour wrote:
> Hello,
> 
> Le 21/12/2021 à 14:17, Roger Quadros a écrit :
>> Hi,
>>
>> TI's AM64 SoC contains one GPMC module. Add driver support for it.
> 
> What's the status of the GPMC interface on K3 architecture, especially for AM65,
> AM62 and other Jacinto 7 CPU devices ?
> 
> TI currently don't recommend to use it for now even if there are still some GPMC
> use case with FPGA devices:
> 
> https://e2e.ti.com/support/processors-group/processors/f/processors-forum/994191/am6442-am64x-gpmc-support
> 
> This patch series add omap-gpmc support for AM64 Soc but as of kernel 5.18-rc2,
> there is no devicetree using ti,am64-gpmc.
> 
> This patch seems missing (at least):
> https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/?h=ti-linux-5.10.y&id=55c102a75d399896c7396229cd687bf97afb5cf6

It's not how LKML development process works - driver changes has to be sent first
and then DT changes  as they accepted by different maintainers and through different trees.

> 
> Thanks!
> 
> Best regards,
> Romain
> 
>>
>> cheers,
>> -roger
>>
>> Changelog:
>> v4
>> - move compatible match table to header file so it can be used by
>> GPMC driver even when NAND driver is not enabled or as a module.
>> GPMC driver is always enabled as built-in.
>> - Select OMAP_GPMC driver from MTD_NAND_OMAP2 driver config as
>> OMAP_GPMC is not essential for ARCH_K3 boot.
>>
>> v3
>> - use compatible match table for checking for NAND controller node in
>> GPMC driver.
>>
>> v2
>> - update DT binding doc to make reg-names and power-domains property
>> required only for specific SoC.
>>
>> Roger Quadros (4):
>>    dt-bindings: memory-controllers: ti,gpmc: Add compatible for AM64
>>    memory: omap-gpmc: Add support for GPMC on AM64 SoC
>>    memory: omap-gpmc: Use a compatible match table when checking for NAND
>>      controller
>>    mtd: rawnand: omap2: Select GPMC device driver for ARCH_K3
>>
>>   .../bindings/memory-controllers/ti,gpmc.yaml  | 23 +++++++++-
>>   drivers/memory/omap-gpmc.c                    | 46 ++++++++++++++-----
>>   drivers/mtd/nand/raw/Kconfig                  |  1 +
>>   drivers/mtd/nand/raw/omap2.c                  |  5 +-
>>   include/linux/platform_data/mtd-nand-omap2.h  |  9 +++-
>>   5 files changed, 67 insertions(+), 17 deletions(-)
>>
> 

-- 
Best regards,
Grygorii, Ukraine

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