Re: [PATCH] mfd: Add support for UP board CPLD/FPGA

[Lee Jones <lee@kernel.org>]

On Sat, 01 Oct 2022, chengwei wrote:

> The UP Squared board <http://www.upboard.com> implements certain
> features (pin control, onboard LEDs or CEC) through an on-board FPGA.
> 
> This mfd driver implements the line protocol to read and write registers
> from the FPGA through regmap. The register address map is also included.
> 
> The UP boards come with a few FPGA-controlled onboard LEDs:
> * UP Board: yellow, green, red
> * UP Squared: blue, yellow, green, red
> 
> The UP Boards provide a few I/O pin headers (for both GPIO and
> functions), including a 40-pin Raspberry Pi compatible header.
> 
> This patch implements support for the FPGA-based pin controller that
> manages direction and enable state for those header pins.
> 
> Partial support UP boards:
> * UP core + CREX
> * UP core + CRST02
> 
> Signed-off-by: Javier Arteaga <javier@emutex.com>
> [merge various fixes]
> Signed-off-by: Nicola Lunghi <nicola.lunghi@emutex.com>
> Signed-off-by: chengwei <larry.lai@yunjingtech.com>
> ---
>  drivers/leds/Kconfig             |  10 +
>  drivers/leds/Makefile            |   1 +
>  drivers/leds/leds-upboard.c      |  90 ++++++
>  drivers/mfd/Kconfig              |   9 +
>  drivers/mfd/Makefile             |   1 +
>  drivers/mfd/upboard-fpga.c       | 486 +++++++++++++++++++++++++++++++
>  include/linux/mfd/upboard-fpga.h |  53 ++++

Please separate the LED and MFD changes into their own patches.

>  7 files changed, 650 insertions(+)
>  create mode 100644 drivers/leds/leds-upboard.c
>  create mode 100644 drivers/mfd/upboard-fpga.c
>  create mode 100644 include/linux/mfd/upboard-fpga.h

-- 
Lee Jones [李琼斯]