lkml.org 
[lkml]   [2021]   [Sep]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC PATCH V4 6/6] riscv: soc: Add Allwinner SoC kconfig option
From
Date
On 13/09/2021 09:45, Maxime Ripard wrote:
> Hi,
>
> On Sat, Sep 11, 2021 at 05:21:39PM +0800, guoren@kernel.org wrote:
>> From: Liu Shaohua <liush@allwinnertech.com>
>>
>> Add Allwinner kconfig option which selects SoC specific and common
>> drivers that is required for this SoC.
>>
>> Allwinner D1 uses custom PTE attributes to solve non-coherency SOC
>> interconnect issues for dma synchronization, so we set the default
>> value when SOC_SUNXI selected.
>>
>> Signed-off-by: Liu Shaohua <liush@allwinnertech.com>
>> Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
>> Signed-off-by: Wei Fu <wefu@redhat.com>
>> Cc: Anup Patel <anup.patel@wdc.com>
>> Cc: Atish Patra <atish.patra@wdc.com>
>> Cc: Christoph Hellwig <hch@lst.de>
>> Cc: Chen-Yu Tsai <wens@csie.org>
>> Cc: Drew Fustini <drew@beagleboard.org>
>> Cc: Maxime Ripard <maxime@cerno.tech>
>> Cc: Palmer Dabbelt <palmerdabbelt@google.com>
>> Cc: Wei Wu <lazyparser@gmail.com>
>> ---
>> arch/riscv/Kconfig.socs | 15 +++++++++++++++
>> arch/riscv/configs/defconfig | 1 +
>> 2 files changed, 16 insertions(+)
>>
>> diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
>> index 30676ebb16eb..8721c000ef23 100644
>> --- a/arch/riscv/Kconfig.socs
>> +++ b/arch/riscv/Kconfig.socs
>> @@ -70,4 +70,19 @@ config SOC_CANAAN_K210_DTB_SOURCE
>>
>> endif
>>
>> +config SOC_SUNXI
>> + bool "Allwinner SoCs"
>> + depends on MMU
>> + select DWMAC_GENERIC
>> + select ERRATA_THEAD
>> + select RISCV_DMA_NONCOHERENT
>> + select RISCV_ERRATA_ALTERNATIVE
>> + select SERIAL_8250
>> + select SERIAL_8250_CONSOLE
>> + select SERIAL_8250_DW
>> + select SIFIVE_PLIC
>> + select STMMAC_ETH
>> + help
>> + This enables support for Allwinner SoC platforms like the D1.
>> +
>
> I'm not sure we should select the drivers there. We could very well
> imagine a board without UART, or even more so without ethernet.

I could make a case for selecting the serial as it is probably the
console, however the ethernet is not necessary for operation and I
would prefer to see this removed.

I wonder if we should have a new Kconfig keyword of suggest which
marks drivers as suggested for a given SoC/board/platform.

--
Ben Dooks http://www.codethink.co.uk/
Senior Engineer Codethink - Providing Genius

https://www.codethink.co.uk/privacy.html

\
 
 \ /
  Last update: 2021-09-14 11:43    [W:0.112 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site