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

Message ID 20221125234656.47306-12-samuel@sholland.org
State Superseded
Headers show
Series riscv: Allwinner D1/D1s platform support | expand

Commit Message

Samuel Holland Nov. 25, 2022, 11:46 p.m. UTC 
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(+)
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Patch

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