[PATCH v2 11/12] riscv: Add the Allwinner SoC family Kconfig option

Samuel Holland
2022-11-25T23:54:14Z

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.

Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Samuel Holland <samuel@sholland.org>
---

Changes in v2:
- Sort Kconfig as if we had done s/SOC_/ARCH_/ for future-proofing

arch/riscv/Kconfig.socs | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index 69774bb362d6..4c1dc2ca11f9 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -26,6 +26,15 @@ config SOC_STARFIVE
help
This enables support for StarFive SoC platform hardware.

+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_VIRT
bool "QEMU Virt Machine"
select CLINT_TIMER if RISCV_M_MODE
--
2.37.4