Re: [PATCH v1 1/3] spi: microchip: rename driver file and internal identifiers

[Conor Dooley <conor.dooley@microchip.com>]

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On Mon, Nov 03, 2025 at 04:05:13PM +0000, Prajna Rajendra Kumar wrote:
> The spi-microchip-core.c driver provides support for the Microchip
> PolarFire SoC (MPFS) "hard" SPI controller. It was originally named
> "core" with the expectation that it might also cover Microchip's
> CoreSPI "soft" IP, but that never materialized.
> 
> The CoreSPI IP cannot be supported by this driver because its register
> layout differs substantially from the MPFS SPI controller. In practice
> most of the code would need to be replaced to handle those differences
> so keeping the drivers separate is the simpler approach.
> 
> The file and internal symbols are renamed to reflect MPFS support and
> to free up "spi-microchip-core.c" for CoreSPI driver.
> 
> Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
> Signed-off-by: Prajna Rajendra Kumar <prajna.rajendrakumar@microchip.com>

Renaming the driver from spi-mpfs to spi-microchip-core was my mistake,
based on the knowledge that the coreSPI IP is what had been hardened and
use in the mpfs device. I didn't expect that the register layout had
been changed so dramatically between the two, when all other "hardened" IP
just added extra bits in registers or whole new registers.

Acked-by: Conor Dooley <conor.dooley@microchip.com>

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