linux-kernel - Re: [PATCH v7 1/6] arm64: lan969x: Add support for Microchip LAN969x SoC

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Message-ID: <CA+HBbNGWSA8QNzcN1HRosSd7qibM8G0u05cxiia6grGJJ0meoQ@mail.gmail.com>
Date: Mon, 30 Jun 2025 15:18:14 +0200
From: Robert Marko <robert.marko@...tura.hr>
To: Daniel Machon <daniel.machon@...rochip.com>
Cc: catalin.marinas@....com, will@...nel.org, olivia@...enic.com, 
	herbert@...dor.apana.org.au, davem@...emloft.net, vkoul@...nel.org, 
	andi.shyti@...nel.org, broonie@...nel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	linux-crypto@...r.kernel.org, dmaengine@...r.kernel.org, 
	linux-i2c@...r.kernel.org, linux-spi@...r.kernel.org, kernel@...gutronix.de, 
	ore@...gutronix.de, luka.perkov@...tura.hr, arnd@...db.de
Subject: Re: [PATCH v7 1/6] arm64: lan969x: Add support for Microchip LAN969x SoC

On Mon, Jun 16, 2025 at 12:21 PM Daniel Machon
<daniel.machon@...rochip.com> wrote:
>
> > This adds support for the Microchip LAN969x ARMv8-based SoC switch family.
> >
> > Signed-off-by: Robert Marko <robert.marko@...tura.hr>
> > Acked-by: Daniel Machon <daniel.machon@...rochip.com>
> > ---
> >  arch/arm64/Kconfig.platforms | 14 ++++++++++++++
> >  1 file changed, 14 insertions(+)
> >
> > diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
> > index a541bb029aa4..834910f11864 100644
> > --- a/arch/arm64/Kconfig.platforms
> > +++ b/arch/arm64/Kconfig.platforms
> > @@ -133,6 +133,20 @@ config ARCH_SPARX5
> >           security through TCAM-based frame processing using versatile
> >           content aware processor (VCAP).
> >
> > +config ARCH_LAN969X
> > +       bool "Microchip LAN969X SoC family"
> > +       select PINCTRL
> > +       select DW_APB_TIMER_OF
>
> The lan969x SoC uses the clk-lan966x driver. Would it not make sense to select
> it here?

HI Daniel,
To me it made more sense to select individual drivers directly in the
config, cause we need pinctrl
etc as well and I dont think it scales selecting it directly via ARCH.

Regards,
Robert
>
>   +       select COMMON_CLK_LAN966X
>
> > +       help
> > +         This enables support for the Microchip LAN969X ARMv8-based
> > +         SoC family of TSN-capable gigabit switches.
> > +
> > +         The LAN969X Ethernet switch family provides a rich set of
> > +         switching features such as advanced TCAM-based VLAN and QoS
> > +         processing enabling delivery of differentiated services, and
> > +         security through TCAM-based frame processing using versatile
> > +         content aware processor (VCAP).
> > +
> >  config ARCH_K3
> >         bool "Texas Instruments Inc. K3 multicore SoC architecture"
> >         select PM_GENERIC_DOMAINS if PM
> > --
> > 2.49.0
> >
>
> /Daniel



-- 
Robert Marko
Staff Embedded Linux Engineer
Sartura d.d.
Lendavska ulica 16a
10000 Zagreb, Croatia
Email: robert.marko@...tura.hr
Web: www.sartura.hr