On Mon, Jun 07, 2021 at 03:43:03PM +0800, Guo Ren wrote:

On Mon, Jun 7, 2021 at 3:19 PM Maxime Ripard [off-list ref] wrote:

quoted

Hi,

On Sun, Jun 06, 2021 at 09:04:08AM +0000, guoren@kernel.org wrote:

quoted

From: Guo Ren <redacted>

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 <redacted>
Co-Developed-by: Liu Shaohua <redacted>
Signed-off-by: Liu Shaohua <redacted>
Cc: Anup Patel <redacted>
Cc: Atish Patra <redacted>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Chen-Yu Tsai <redacted>
Cc: Drew Fustini <redacted>
Cc: Maxime Ripard <redacted>
Cc: Palmer Dabbelt <redacted>
Cc: Wei Fu <wefu@redhat.com>
Cc: Wei Wu <redacted>
---
 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

Well, even the UART is optional. Just enable them in the defconfig

Maxime