From: <Conor.Dooley@microchip.com>
To: <heiko@sntech.de>, <samuel@sholland.org>, <wens@csie.org>,
<jernej.skrabec@gmail.com>, <linux-sunxi@lists.linux.dev>,
<palmer@dabbelt.com>, <paul.walmsley@sifive.com>,
<aou@eecs.berkeley.edu>, <linux-riscv@lists.infradead.org>
Cc: <robh+dt@kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<krzysztof.kozlowski+dt@linaro.org>
Subject: Re: [PATCH 05/12] riscv: Add the Allwinner SoC family Kconfig option
Date: Tue, 16 Aug 2022 09:23:16 +0000 [thread overview]
Message-ID: <53fa815e-b4aa-7dea-a403-c29738af296e@microchip.com> (raw)
In-Reply-To: <10785313.BaYr0rKQ5T@diego>
On 16/08/2022 10:17, Heiko Stübner wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>
> Am Montag, 15. August 2022, 18:56:23 CEST schrieb Conor.Dooley@microchip.com:
>> On 15/08/2022 06:08, Samuel Holland wrote:
>>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>>>
>>> Allwinner manufactures the sunxi family of application processors. This
>>> includes the "sun8i" series of ARMv7 SoCs, the "sun50i" series of ARMv8
>>> SoCs, and now the "sun20i" series of 64-bit RISC-V SoCs.
>>>
>>> The first SoC in the sun20i series is D1, containing a single T-HEAD
>>> C906 core. D1s is a low-pin-count variant of D1 with co-packaged DRAM.
>>>
>>> Most peripherals are shared across the entire chip family. In fact, the
>>> ARMv7 T113 SoC is pin-compatible and almost entirely register-compatible
>>> with the D1s.
>>>
>>> This means many existing device drivers can be reused. To facilitate
>>> this reuse, name the symbol ARCH_SUNXI, since that is what the existing
>>> drivers have as their dependency.
>>
>> Hey Samuel,
>> I think this and patch 12/12 with the defconfig changes should be
>> deferred until post LPC (which still leaves plenty of time for
>> making the 6.1 merge window). We already have like 4 different
>> approaches between the existing SOC_FOO symbols & two more when
>> D1 stuff and the Renesas stuff is considered.
>
> On the other hand, I don't really think it's that hard to change things
> after the fact? I.e. ARCH_SUNXI is pretty much set in stone anyway,
> so there isn't very much that _could_ change without affecting most
> driver subsystems in the kernel.
>
> So I don't think we'd actually need to wait with the Allwinner symbol.
True, but it'd be the same release anyway most likely so I don't
think that there'd really be any waiting involved. I /like/ the
idea of using ARCH_FOO rather than SOC_FOO as it's far more
consistent across the kernel - it's more a question of not doing
one thing here and another with the Renesas stuff to me.
>
>
> Heiko
>
>> Plan is to decide at LPC on one approach for what to do with
>> Kconfig.socs & to me it seems like a good idea to do what's being
>> done here - it's likely that further arm vendors will move and
>> keeping the common symbols makes a lot of sense to me...
>>
>> Thanks,
>> Conor.
>>
>>>
>>> Signed-off-by: Samuel Holland <samuel@sholland.org>
>>> ---
>>>
>>> arch/riscv/Kconfig.socs | 9 +++++++++
>>> 1 file changed, 9 insertions(+)
>>>
>>> diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
>>> index 69774bb362d6..1caacbfac1a5 100644
>>> --- a/arch/riscv/Kconfig.socs
>>> +++ b/arch/riscv/Kconfig.socs
>>> @@ -1,5 +1,14 @@
>>> menu "SoC selection"
>>>
>>> +config ARCH_SUNXI
>>> + bool "Allwinner sun20i SoCs"
>>> + select ERRATA_THEAD if MMU && !XIP_KERNEL
>>> + select SIFIVE_PLIC
>>> + select SUN4I_TIMER
>>> + help
>>> + This enables support for Allwinner sun20i platform hardware,
>>> + including boards based on the D1 and D1s SoCs.
>>> +
>>> config SOC_MICROCHIP_POLARFIRE
>>> bool "Microchip PolarFire SoCs"
>>> select MCHP_CLK_MPFS
>>> --
>>> 2.35.1
>>>
>>
>> _______________________________________________
>> linux-riscv mailing list
>> linux-riscv@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-riscv
>>
>
>
>
>
next prev parent reply other threads:[~2022-08-16 10:10 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-15 5:08 [PATCH 00/12] riscv: Allwinner D1 platform support Samuel Holland
2022-08-15 5:08 ` [PATCH 01/12] MAINTAINERS: Match the sun20i family of Allwinner SoCs Samuel Holland
2022-08-15 17:06 ` Heiko Stübner
2022-08-15 5:08 ` [PATCH 02/12] dt-bindings: riscv: Add T-HEAD C906 and C910 compatibles Samuel Holland
2022-08-15 17:07 ` Heiko Stübner
2022-08-16 17:34 ` Rob Herring
2022-11-04 2:57 ` Icenowy Zheng
2022-11-20 11:23 ` Conor Dooley
2022-11-20 11:25 ` Conor Dooley
2022-08-15 5:08 ` [PATCH 03/12] dt-bindings: vendor-prefixes: Add Allwinner D1 board vendors Samuel Holland
2022-08-15 17:12 ` Heiko Stübner
2022-08-16 17:34 ` Rob Herring
2022-08-15 5:08 ` [PATCH 04/12] dt-bindings: riscv: Add Allwinner D1 board compatibles Samuel Holland
2022-08-16 7:39 ` Krzysztof Kozlowski
2022-08-16 9:02 ` Heiko Stübner
2022-08-16 9:12 ` Heiko Stübner
2022-08-16 17:35 ` Rob Herring
2022-08-15 5:08 ` [PATCH 05/12] riscv: Add the Allwinner SoC family Kconfig option Samuel Holland
2022-08-15 16:56 ` Conor.Dooley
2022-08-16 9:17 ` Heiko Stübner
2022-08-16 9:23 ` Conor.Dooley [this message]
2022-08-15 17:13 ` Heiko Stübner
2022-08-15 5:08 ` [PATCH 06/12] riscv: dts: allwinner: Add the D1 SoC base devicetree Samuel Holland
2022-08-15 13:11 ` Andre Przywara
2022-08-15 17:01 ` Conor.Dooley
2022-08-20 17:24 ` Samuel Holland
2022-08-20 17:29 ` Conor.Dooley
2022-08-21 6:45 ` Icenowy Zheng
2022-08-21 10:04 ` Conor.Dooley
2022-08-22 11:46 ` Geert Uytterhoeven
2022-08-22 12:13 ` Conor.Dooley
2022-08-22 12:29 ` Andre Przywara
2022-08-22 12:31 ` Geert Uytterhoeven
2022-08-22 13:56 ` Conor.Dooley
2022-08-22 15:29 ` Jessica Clarke
2022-09-09 3:42 ` Samuel Holland
2022-09-09 7:10 ` Geert Uytterhoeven
2022-09-21 7:49 ` Geert Uytterhoeven
2022-08-22 10:50 ` Andre Przywara
2022-08-16 7:41 ` Krzysztof Kozlowski
2022-08-16 7:49 ` Jernej Škrabec
2022-08-16 9:12 ` Heiko Stübner
2022-08-16 9:25 ` Jernej Škrabec
2022-08-16 9:42 ` Krzysztof Kozlowski
2022-08-16 11:00 ` Andre Przywara
2022-08-16 11:11 ` Krzysztof Kozlowski
2022-08-16 11:12 ` Krzysztof Kozlowski
2022-08-16 11:34 ` Conor.Dooley
2022-08-22 11:40 ` Geert Uytterhoeven
2022-08-16 9:11 ` Heiko Stübner
2022-08-17 8:29 ` Krzysztof Kozlowski
2022-08-19 22:19 ` Conor.Dooley
2022-08-15 5:08 ` [PATCH 07/12] riscv: dts: allwinner: Add Allwinner D1 Nezha devicetree Samuel Holland
2022-08-15 17:37 ` Conor.Dooley
2022-08-15 18:34 ` Conor.Dooley
2022-08-16 8:55 ` Heiko Stübner
2022-08-19 22:10 ` Conor.Dooley
2022-08-21 7:06 ` Icenowy Zheng
2022-09-04 20:10 ` Peter Korsgaard
2022-09-09 4:37 ` Samuel Holland
2022-09-09 7:18 ` Conor.Dooley
2022-09-09 8:11 ` Heiko Stübner
2022-09-09 19:04 ` Jessica Clarke
2022-09-03 15:21 ` Peter Korsgaard
2022-08-15 5:08 ` [PATCH 08/12] riscv: dts: allwinner: Add Sipeed Lichee RV devicetrees Samuel Holland
2022-08-15 5:08 ` [PATCH 09/12] riscv: dts: allwinner: Add MangoPi MQ Pro devicetree Samuel Holland
2022-08-15 5:08 ` [PATCH 10/12] riscv: dts: allwinner: Add Dongshan Nezha STU devicetree Samuel Holland
2022-08-15 5:08 ` [PATCH 11/12] riscv: dts: allwinner: Add ClockworkPi and DevTerm devicetrees Samuel Holland
2022-08-15 5:08 ` [PATCH 12/12] riscv: defconfig: Enable the Allwinner D1 platform and drivers Samuel Holland
2022-08-15 7:05 ` [PATCH 00/12] riscv: Allwinner D1 platform support Conor.Dooley
2022-08-15 17:12 ` Conor.Dooley
2022-08-16 2:42 ` Samuel Holland
2022-08-16 6:38 ` Conor.Dooley
2022-09-01 18:10 ` Palmer Dabbelt
2022-09-02 5:42 ` Conor.Dooley
2022-09-06 20:29 ` Jernej Škrabec
2022-09-07 20:43 ` Conor.Dooley
2022-09-08 7:00 ` Geert Uytterhoeven
2022-09-08 9:04 ` Arnd Bergmann
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