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Message-ID: <CAMuHMdVyz4mbExe8ZzPkVxEujYBhCBBrh88n8D6ykcZyy3=SEA@mail.gmail.com>
Date: Mon, 26 Feb 2024 17:21:13 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Yoshinori Sato <ysato@...rs.sourceforge.jp>
Cc: linux-sh@...r.kernel.org, Damien Le Moal <dlemoal@...nel.org>, 
	Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Geert Uytterhoeven <geert+renesas@...der.be>, Michael Turquette <mturquette@...libre.com>, 
	Stephen Boyd <sboyd@...nel.org>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
	Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
	Thomas Gleixner <tglx@...utronix.de>, Lorenzo Pieralisi <lpieralisi@...nel.org>, 
	Krzysztof Wilczyński <kw@...ux.com>, 
	Bjorn Helgaas <bhelgaas@...gle.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Jiri Slaby <jirislaby@...nel.org>, Magnus Damm <magnus.damm@...il.com>, 
	Daniel Lezcano <daniel.lezcano@...aro.org>, Rich Felker <dalias@...c.org>, 
	John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>, Lee Jones <lee@...nel.org>, 
	Helge Deller <deller@....de>, Heiko Stuebner <heiko@...ech.de>, 
	Jernej Skrabec <jernej.skrabec@...il.com>, Chris Morgan <macromorgan@...mail.com>, 
	Yang Xiwen <forbidden405@...mail.com>, Sebastian Reichel <sre@...nel.org>, 
	Linus Walleij <linus.walleij@...aro.org>, Randy Dunlap <rdunlap@...radead.org>, 
	Arnd Bergmann <arnd@...db.de>, Vlastimil Babka <vbabka@...e.cz>, Hyeonggon Yoo <42.hyeyoo@...il.com>, 
	David Rientjes <rientjes@...gle.com>, Baoquan He <bhe@...hat.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, Guenter Roeck <linux@...ck-us.net>, 
	Stephen Rothwell <sfr@...b.auug.org.au>, Azeem Shaikh <azeemshaikh38@...il.com>, 
	Javier Martinez Canillas <javierm@...hat.com>, Max Filippov <jcmvbkbc@...il.com>, 
	Palmer Dabbelt <palmer@...osinc.com>, Bin Meng <bmeng@...ylab.org>, 
	Jonathan Corbet <corbet@....net>, Jacky Huang <ychuang3@...oton.com>, 
	Lukas Bulwahn <lukas.bulwahn@...il.com>, Biju Das <biju.das.jz@...renesas.com>, 
	Uwe Kleine-König <u.kleine-koenig@...gutronix.de>, 
	Sam Ravnborg <sam@...nborg.org>, Sergey Shtylyov <s.shtylyov@....ru>, 
	Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>, 
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>, linux-ide@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org, linux-pci@...r.kernel.org, 
	linux-serial@...r.kernel.org, linux-fbdev@...r.kernel.org
Subject: Re: [DO NOT MERGE v6 02/37] sh: Kconfig unified OF supported targets.

Hi Sato-san,

On Tue, Jan 9, 2024 at 9:23 AM Yoshinori Sato
<ysato@...rs.sourceforge.jp> wrote:
> Targets that support OF should be treated as one board.
>
> Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>

Thanks for your patch!

> --- a/arch/sh/Kconfig
> +++ b/arch/sh/Kconfig
> @@ -710,6 +710,7 @@ choice
>         prompt "Kernel command line"
>         optional
>         default CMDLINE_OVERWRITE
> +       depends on !OF || USE_BUILTIN_DTB

This is still useful in the generic OF case.

I think it would be good to model this similar to what arm/arm64/riscv
are using (from bootloader / extend / force).

>         help
>           Setting this option allows the kernel command line arguments
>           to be set.
> diff --git a/arch/sh/boards/Kconfig b/arch/sh/boards/Kconfig
> index 109bec4dad94..e7e52779ef62 100644
> --- a/arch/sh/boards/Kconfig
> +++ b/arch/sh/boards/Kconfig
> @@ -19,16 +19,9 @@ config SH_DEVICE_TREE
>         select TIMER_OF
>         select COMMON_CLK
>         select GENERIC_CALIBRATE_DELAY
> -
> -config SH_JCORE_SOC
> -       bool "J-Core SoC"
> -       select SH_DEVICE_TREE
> -       select CLKSRC_JCORE_PIT
> -       select JCORE_AIC
> -       depends on CPU_J2
> -       help
> -         Select this option to include drivers core components of the
> -         J-Core SoC, including interrupt controllers and timers.
> +       select GENERIC_IRQ_CHIP
> +       select SYS_SUPPORTS_PCI
> +       select GENERIC_PCI_IOMAP if PCI
>
>  config SH_SOLUTION_ENGINE
>         bool "SolutionEngine"
> @@ -293,6 +286,7 @@ config SH_LANDISK
>         bool "LANDISK"
>         depends on CPU_SUBTYPE_SH7751R
>         select HAVE_PCI
> +       select SYS_SUPPORTS_PCI
>         help
>           I-O DATA DEVICE, INC. "LANDISK Series" support.
>
> @@ -369,6 +363,16 @@ config SH_APSH4AD0A
>         help
>           Select AP-SH4AD-0A if configuring for an ALPHAPROJECT AP-SH4AD-0A.
>
> +config SH_OF_BOARD
> +       bool "General Open Firmware boards"
> +       select SH_DEVICE_TREE
> +       select CLKSRC_JCORE_PIT if CPU_J2
> +       select JCORE_AIC if CPU_J2

Please move these selects to CPU_J2 instead...

> +       select HAVE_PCI if CPU_SUBTYPE_SH7751R

.. and this to CPU_SUBTYPE_SH7751R, else it will become
a long unmaintainable list soon...

> +       help
> +         This board means general OF supported targets.
> +
> +

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68korg

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

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