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

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Date:   Sun,  6 Jun 2021 09:04:08 +0000
From:   guoren@...nel.org
To:     guoren@...nel.org, anup.patel@....com, palmerdabbelt@...gle.com,
        arnd@...db.de, wens@...e.org, maxime@...no.tech,
        drew@...gleboard.org, liush@...winnertech.com,
        lazyparser@...il.com, wefu@...hat.com
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, linux-sunxi@...ts.linux.dev,
        Guo Ren <guoren@...ux.alibaba.com>,
        Atish Patra <atish.patra@....com>,
        Christoph Hellwig <hch@....de>
Subject: [RFC PATCH v2 10/11] riscv: soc: Add Allwinner SoC kconfig option

From: Guo Ren <guoren@...ux.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@...ux.alibaba.com>
Co-Developed-by: Liu Shaohua <liush@...winnertech.com>
Signed-off-by: Liu Shaohua <liush@...winnertech.com>
Cc: Anup Patel <anup.patel@....com>
Cc: Atish Patra <atish.patra@....com>
Cc: Christoph Hellwig <hch@....de>
Cc: Chen-Yu Tsai <wens@...e.org>
Cc: Drew Fustini <drew@...gleboard.org>
Cc: Maxime Ripard <maxime@...no.tech>
Cc: Palmer Dabbelt <palmerdabbelt@...gle.com>
Cc: Wei Fu <wefu@...hat.com>
Cc: Wei Wu <lazyparser@...il.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.
+
 endmenu
diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index 1f2be23..9e83d14 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig
@@ -15,6 +15,7 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 CONFIG_BPF_SYSCALL=y
 CONFIG_SOC_SIFIVE=y
+CONFIG_SOC_SUNXI=y
 CONFIG_SOC_VIRT=y
 CONFIG_SOC_MICROCHIP_POLARFIRE=y
 CONFIG_SMP=y
-- 
2.7.4