linux-kernel - Re: [PATCH v1 3/3] mmc: Add driver for LiteX's LiteSDCard interface

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Date:   Mon, 6 Dec 2021 06:39:36 +0900
From:   Stafford Horne <shorne@...il.com>
To:     Gabriel Somlo <gsomlo@...il.com>
Cc:     linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        devicetree@...r.kernel.org, ulf.hansson@...aro.org,
        linux-mmc@...r.kernel.org, kgugala@...micro.com,
        mholenko@...micro.com, krakoczy@...micro.com,
        mdudek@...ernships.antmicro.com, paulus@...abs.org, joel@....id.au,
        geert@...ux-m68k.org, david.abdurachmanov@...ive.com,
        florent@...oy-digital.fr
Subject: Re: [PATCH v1 3/3] mmc: Add driver for LiteX's LiteSDCard interface

On Fri, Dec 03, 2021 at 06:41:55PM -0500, Gabriel Somlo wrote:
> LiteX (https://github.com/enjoy-digital/litex) is a SoC framework
> that targets FPGAs. LiteSDCard is a small footprint, configurable
> SDCard core commonly used in LiteX designs.
> 
> The driver was first written in May 2020 and has been maintained
> cooperatively by the LiteX community. Thanks to all contributors!
> 
> Co-developed-by: Kamil Rakoczy <krakoczy@...micro.com>
> Signed-off-by: Kamil Rakoczy <krakoczy@...micro.com>
> Co-developed-by: Maciej Dudek <mdudek@...ernships.antmicro.com>
> Signed-off-by: Maciej Dudek <mdudek@...ernships.antmicro.com>
> Co-developed-by: Paul Mackerras <paulus@...abs.org>
> Signed-off-by: Paul Mackerras <paulus@...abs.org>
> Signed-off-by: Gabriel Somlo <gsomlo@...il.com>
> Cc: Mateusz Holenko <mholenko@...micro.com>
> Cc: Karol Gugala <kgugala@...micro.com>
> Cc: Joel Stanley <joel@....id.au>
> Cc: Stafford Horne <shorne@...il.com>
> Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
> Cc: David Abdurachmanov <david.abdurachmanov@...ive.com>
> Cc: Florent Kermarrec <florent@...oy-digital.fr>
> ---
>  drivers/mmc/host/Kconfig     |   6 +
>  drivers/mmc/host/Makefile    |   1 +
>  drivers/mmc/host/litex_mmc.c | 677 +++++++++++++++++++++++++++++++++++
>  3 files changed, 684 insertions(+)
>  create mode 100644 drivers/mmc/host/litex_mmc.c
> 
> diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
> index 5af8494c31b5..84c64e72195d 100644
> --- a/drivers/mmc/host/Kconfig
> +++ b/drivers/mmc/host/Kconfig
> @@ -1093,3 +1093,9 @@ config MMC_OWL
>  
>  config MMC_SDHCI_EXTERNAL_DMA
>  	bool
> +
> +config MMC_LITEX
> +	tristate "Support for the MMC Controller in LiteX SOCs"
> +	depends on OF && LITEX
> +	help
> +	  Generic MCC driver for LiteX

I just noticed this while configuring the kernel.  This doesn't really follow
the pattern of other drivers, we should think of putting "Litex" near the
beginning of the line. It makes it easier to spot in menuconfig.

For example:

LiteX MMC Controller support

This selects support for the MMC Host Controller found in LiteX SOCs.

It unsure, say N.

-Stafford