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

[Romain Naour]

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

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(-)
>