kumquat-buildroot/board/nezha/patches/uboot/0001-arch-riscv-dts-sun20i-d1.dtsi-adjust-plic-compatible.patch

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From 99cf8f37ceb1def9e7bbaccc395cf2275723e03d Mon Sep 17 00:00:00 2001
From: Peter Korsgaard <peter@korsgaard.com>
Date: Thu, 4 Nov 2021 22:15:13 +0100
Subject: [PATCH] arch/riscv/dts/sun20i-d1.dtsi: adjust plic compatible to
match opensbi
The T-HEAD PLIC is by default not accessible from S-mode, and access must be
enabled by opensbi to make it accessible to Linux.
The DTB is used both by U-Boot and opensbi (but the PLIC node is ignored by
U-Boot), so change the compatible to match what opensbi expects to fix a
crash during Linux boot:
https://github.com/riscv-software-src/opensbi/commit/78c2b19218bd
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
arch/riscv/dts/sun20i-d1.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/dts/sun20i-d1.dtsi b/arch/riscv/dts/sun20i-d1.dtsi
index 280e0336d4..56d02c33b0 100644
--- a/arch/riscv/dts/sun20i-d1.dtsi
+++ b/arch/riscv/dts/sun20i-d1.dtsi
@@ -1136,7 +1136,7 @@
plic: interrupt-controller@10000000 {
compatible = "allwinner,sun20i-d1-plic",
- "sifive,plic-1.0.0";
+ "thead,c900-plic";
reg = <0x10000000 0x4000000>;
#address-cells = <0>;
interrupts-extended = <&cpu0_intc 11>,
--
2.20.1