[PATCH v2 2/4] riscv: dts: anlogic: dr1v90: Add "b" ISA extension
Guodong Xu
guodong at riscstar.com
Wed Jan 14 15:18:58 PST 2026
"b" is ratified (Apr/2024) much later than its components zba/zbb/zbs
(Jun/2021). With "b" added into riscv/extensions.yaml, a dependency
checking rule is now enforced, which requires that when zba, zbb, and zbs
are all specified, "b" must be added as well. Failing to do this will
cause dtbs_check schema check warnings.
According to uabi.rst, as a single-letter extension, "b" should be added
after "c" in canonical order.
Update dr1v90.dtsi to conform to this rule. Line balancing is performed
to improve readability.
Signed-off-by: Guodong Xu <guodong at riscstar.com>
---
v2: New patch, a split from the Patch 2 in v1. This patch is for
Anlogic dr1v90.
---
arch/riscv/boot/dts/anlogic/dr1v90.dtsi | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/boot/dts/anlogic/dr1v90.dtsi b/arch/riscv/boot/dts/anlogic/dr1v90.dtsi
index a5d0765ade32..9fe183f5f5c8 100644
--- a/arch/riscv/boot/dts/anlogic/dr1v90.dtsi
+++ b/arch/riscv/boot/dts/anlogic/dr1v90.dtsi
@@ -27,8 +27,9 @@ cpu at 0 {
mmu-type = "riscv,sv39";
reg = <0>;
riscv,isa-base = "rv64i";
- riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zba", "zbb", "zbc",
- "zbkc", "zbs", "zicntr", "zicsr", "zifencei",
+ riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b",
+ "zba", "zbb", "zbc", "zbkc", "zbs",
+ "zicntr", "zicsr", "zifencei",
"zihintpause", "zihpm";
cpu0_intc: interrupt-controller {
--
2.43.0
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