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Message-ID: <tencent_E56A833916E00EC7B4840C34FAF1250ADE0A@qq.com>
Date: Tue, 5 Mar 2024 15:47:15 +0800
From: Yangyu Chen <cyy@...self.name>
To: Damien Le Moal <dlemoal@...nel.org>, linux-riscv@...ts.infradead.org
Cc: Conor Dooley <conor@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt
<palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
Guo Ren <guoren@...nel.org>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Conor Dooley <conor.dooley@...rochip.com>
Subject: Re: [PATCH v3 5/7] riscv: Kconfig.socs: Allow SOC_CANAAN with MMU for
K230
On 2024/3/5 07:46, Damien Le Moal wrote:
> On 3/5/24 06:05, Yangyu Chen wrote:
>> Since K230 was released, SOC_CANAAN is no longer only referred to the K210.
>> Remove it depends on !MMU will allow building dts for K230 and remove the
>> K210 string from the help message.
>>
>> Signed-off-by: Yangyu Chen <cyy@...self.name>
>> Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
>> ---
>> arch/riscv/Kconfig.socs | 5 ++---
>> 1 file changed, 2 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
>> index 623de5f8a208..b4e9b7f75510 100644
>> --- a/arch/riscv/Kconfig.socs
>> +++ b/arch/riscv/Kconfig.socs
>> @@ -75,13 +75,12 @@ config ARCH_CANAAN
>> def_bool SOC_CANAAN
>>
>> config SOC_CANAAN
>> - bool "Canaan Kendryte K210 SoC"
>> - depends on !MMU
>
> This seems wrong to me. The k210 support does require no-mmu. So why remove
> this ?
It just allows SOC_CANAAN to be selected when MMU=y. With this patch,
nommu_k210_defconfig still works.
> Does the k230 have MMU support ? If yes, then I do not think these 2 can
> fall under the same SOC_CANAAN.
>
Yes, K230 has MMU, you can see the bootlog from the cover letter and the
dts patch [6/7]. Could you provide some reasons why it can fall? I
didn't see any differences in .config after this change after executing
'make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- nommu_k210_defconfig'.
>> + bool "Canaan Kendryte SoC"
>> select CLINT_TIMER if RISCV_M_MODE
>> select ARCH_HAS_RESET_CONTROLLER
>> select PINCTRL
>> select COMMON_CLK
>> help
>> - This enables support for Canaan Kendryte K210 SoC platform hardware.
>> + This enables support for Canaan Kendryte SoC platform hardware.
>>
>> endmenu # "SoC selection"
>
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