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

[Romain Naour <romain.naour@smile.fr>]

Hi,

Le 15/04/2022 à 15:06, Grygorii Strashko a écrit :
> 
> 
> 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.

Ok, I understand.

DT changes are still under review [1] and are not yet merged in 5.18-rc6.

Sorry for the noise.

[1] https://lkml.org/lkml/2022/2/4/320

Best regards,
Romain


> 
>>
>> 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(-)
>>>
>>
>