[RFC PATCH v2 10/11] riscv: soc: Add Allwinner SoC kconfig option

[Guo Ren]

On Mon, Jun 7, 2021 at 3:19 PM Maxime Ripard <maxime at cerno.tech> wrote:
>
> Hi,
>
> On Sun, Jun 06, 2021 at 09:04:08AM +0000, guoren at kernel.org wrote:
> > From: Guo Ren <guoren at linux.alibaba.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: Guo Ren <guoren at linux.alibaba.com>
> > Co-Developed-by: Liu Shaohua <liush at allwinnertech.com>
> > Signed-off-by: Liu Shaohua <liush at allwinnertech.com>
> > Cc: Anup Patel <anup.patel at wdc.com>
> > Cc: Atish Patra <atish.patra at wdc.com>
> > Cc: Christoph Hellwig <hch at lst.de>
> > Cc: Chen-Yu Tsai <wens at csie.org>
> > Cc: Drew Fustini <drew at beagleboard.org>
> > Cc: Maxime Ripard <maxime at cerno.tech>
> > Cc: Palmer Dabbelt <palmerdabbelt at google.com>
> > Cc: Wei Fu <wefu at redhat.com>
> > Cc: Wei Wu <lazyparser at gmail.com>
> > ---
> >  arch/riscv/Kconfig.socs      | 12 ++++++++++++
> >  arch/riscv/configs/defconfig |  1 +
> >  2 files changed, 13 insertions(+)
> >
> > diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
> > index ed96376..055fb3e 100644
> > --- a/arch/riscv/Kconfig.socs
> > +++ b/arch/riscv/Kconfig.socs
> > @@ -69,4 +69,16 @@ config SOC_CANAAN_K210_DTB_SOURCE
> >
> >  endif
> >
> > +config SOC_SUNXI
> > +     bool "Allwinner SoCs"
> > +     depends on MMU
> > +     select DWMAC_GENERIC
> > +     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.
> > +
>
> We probably don't want to select DWMAC, STMMAC_ETH and the 8250 options,
> looks good otherwise.
>
> Maxime
Remove DWMAC, STMMAC_ETH is okay.

But I think we still need:
select SERIAL_8250_DW if SERIAL_8250
-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/