linux-kernel - Re: [PATCH v3 2/2] spi: Add Socionext F

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Message-ID: <CAMuHMdVH+amC83uMBpsCebaHd2EWp1EO59JNcgRTncbNGNNRsQ@mail.gmail.com>
Date:   Tue, 29 Nov 2022 17:49:26 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Cc:     Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] spi: Add Socionext F_OSPI SPI flash controller driver

Hi Hayashi-san,

On Thu, Nov 24, 2022 at 1:36 AM Kunihiko Hayashi
<hayashi.kunihiko@...ionext.com> wrote:
> Introduce Socionext F_OSPI controller driver. This controller is used to
> communicate with slave devices such as SPI Flash memories. It supports
> 4 slave devices and up to 8-bit wide bus, but supports master mode only.
>
> This driver uses spi-mem framework for SPI flash memory access, and
> can only operate indirect access mode and single data rate mode.
>
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>

Thanks for your patch, which is now commit 1b74dd64c8612619
("spi: Add Socionext F_OSPI SPI flash controller driver") in
spi/for-next.

> --- a/drivers/spi/Kconfig
> +++ b/drivers/spi/Kconfig
> @@ -906,6 +906,15 @@ config SPI_SLAVE_MT27XX
>           say Y or M here.If you are not sure, say N.
>           SPI slave drivers for Mediatek MT27XX series ARM SoCs.
>
> +config SPI_SN_F_OSPI
> +       tristate "Socionext F_OSPI SPI flash controller"
> +       depends on OF && HAS_IOMEM
> +       depends on SPI_MEM

On which systems is this hardware block found?
Perhaps this should depend on ARCH_UNIPHIER || COMPILE_TEST?

> +       help
> +         This enables support for the Socionext F_OSPI controller
> +         for connecting an SPI Flash memory over up to 8-bit wide bus.
> +         It supports indirect access mode only.
> +
>  config SPI_SPRD
>         tristate "Spreadtrum SPI controller"
>         depends on ARCH_SPRD || COMPILE_TEST

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds