linux-kernel - Re: [RFC PATCH 1/2] arm64: amlogic: add new ARCH_AMLIPC for IPC SoC

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Message-ID: <20230419160405.d7qfir3nv6tlxx2a@CAB-WSD-L081021>
Date:   Wed, 19 Apr 2023 19:04:05 +0300
From:   Dmitry Rokosov <ddrokosov@...rdevices.ru>
To:     Neil Armstrong <neil.armstrong@...aro.org>
CC:     =Xianwei Zhao <xianwei.zhao@...ogic.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-amlogic@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Kevin Hilman <khilman@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [RFC PATCH 1/2] arm64: amlogic: add new ARCH_AMLIPC for IPC SoC

On Wed, Apr 19, 2023 at 03:43:12PM +0200, Neil Armstrong wrote:
> On 19/04/2023 15:14, Dmitry Rokosov wrote:
> > On Wed, Apr 19, 2023 at 03:38:33PM +0800, =Xianwei Zhao wrote:
> > > From: Xianwei Zhao <xianwei.zhao@...ogic.com>
> > > 
> > > The C series SoCs are designed for smart IP camera
> > > applications, which does not belong to Meson series.
> > > So, Add ARCH_AMLIPC for the new series.
> > > 
> > > There are now multiple amlogic SoC seies supported, so group them under
> > > their own menu. we can easily add new platforms there in the future.
> > > Introduce ARCH_AMLOGIC to cover all Amlogic SoC series.
> > > 
> > > No functional changes introduced.
> > > 
> > > Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
> > > ---
> > >   arch/arm64/Kconfig.platforms | 12 ++++++++++++
> > >   arch/arm64/configs/defconfig |  2 ++
> > >   2 files changed, 14 insertions(+)
> > > 
> > > diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
> > > index 89a0b13b058d..bfbc817eef8f 100644
> > > --- a/arch/arm64/Kconfig.platforms
> > > +++ b/arch/arm64/Kconfig.platforms
> > > @@ -162,12 +162,24 @@ config ARCH_MEDIATEK
> > >   	  This enables support for MediaTek MT27xx, MT65xx, MT76xx
> > >   	  & MT81xx ARMv8 SoCs
> > > +menuconfig ARCH_AMLOGIC
> > > +	bool "NXP SoC support"
> > 
> > NXP? Did you mean "Amlogic"?
> > 
> > > +
> > > +if ARCH_AMLOGIC
> > > +
> > >   config ARCH_MESON
> > >   	bool "Amlogic Platforms"
> > >   	help
> > >   	  This enables support for the arm64 based Amlogic SoCs
> > >   	  such as the s905, S905X/D, S912, A113X/D or S905X/D2
> > > +config ARCH_AMLIPC
> > 
> > Do we really need a different ARCH for Amlogic IPC?
> > I can imagine that it's not the Meson architecture at all.
> > But maybe a better solution is just to rename ARCH_MESON to ARCH_AMLOGIC?
> 
> It should be changed treewide, and is it worth it ?

As far as I understand, the A1 and S4 families are not fully compatible
with the Meson architecture, and we haven't provided additional ARCH_*
for them.
In my opinion, it's a good time to split the Meson architecture into
proper subsets, or rename it treewide (maybe only config option
ARCH_MESON => ARCH_AMLOGIC).

> > 
> > > +	bool "Amlogic IPC Platforms"
> > > +	help
> > > +	  This enables support for the arm64 based Amlogic IPC SoCs
> > > +	  such as the C302X, C308L
> > > +endif
> > > +
> > >   config ARCH_MVEBU
> > >   	bool "Marvell EBU SoC Family"
> > >   	select ARMADA_AP806_SYSCON
> > > diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> > > index 7790ee42c68a..f231bd1723fd 100644
> > > --- a/arch/arm64/configs/defconfig
> > > +++ b/arch/arm64/configs/defconfig
> > > @@ -46,7 +46,9 @@ CONFIG_ARCH_LG1K=y
> > >   CONFIG_ARCH_HISI=y
> > >   CONFIG_ARCH_KEEMBAY=y
> > >   CONFIG_ARCH_MEDIATEK=y
> > > +CONFIG_ARCH_AMLOGIC=y
> > >   CONFIG_ARCH_MESON=y
> > > +CONFIG_ARCH_AMLIPC=y
> > >   CONFIG_ARCH_MVEBU=y
> > >   CONFIG_ARCH_NXP=y
> > >   CONFIG_ARCH_LAYERSCAPE=y
> > > -- 
> > > 2.37.1
> > > 
> > > 
> > > _______________________________________________
> > > linux-amlogic mailing list
> > > linux-amlogic@...ts.infradead.org
> > > http://lists.infradead.org/mailman/listinfo/linux-amlogic
> > 
> 

-- 
Thank you,
Dmitry

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