Skip to content

Add per-hart interrupts for RISCV #763

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
zeddii merged 1 commit into from
May 20, 2026
Merged

Add per-hart interrupts for RISCV #763

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
20 changes: 17 additions & 3 deletions lopper/assists/gen_domain_dts.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -625,10 +625,19 @@ def xlnx_generate_domain_dts(tgt_node, sdt, options):
except KeyError:
pass

# For SpartanUP+ Variants, add the riscv,timer node at root.
# It is wired to the per-hart CPU interrupt controller (cpu0_intc) at IRQ 5.
if linux_dt and match_cpunode.propval('xlnx,family', list)[0] in ('spartanuplus', 'spartanuplusaes1'):
# Add cpu0_intc (riscv,cpu-intc) as a child of the CPU node,
# and add the riscv,timer node at root wired to cpu0_intc at IRQ 5.
# Also wire axi_intc to cpu0_intc at IRQ 9 (IRQ_S_EXT).
if linux_dt and match_cpunode.propval('xlnx,ip-name', list)[0] == 'microblaze_riscv':
from lopper.tree import LopperProp
intc_node = LopperNode()
intc_node.name = "interrupt-controller"
intc_node.label = "cpu0_intc"
intc_node['compatible'] = "riscv,cpu-intc"
intc_node['#interrupt-cells'] = 1
intc_node + LopperProp("interrupt-controller")
match_cpunode.add(intc_node)

timer_node = LopperNode()
timer_node.abs_path = "/timer"
timer_node.name = "timer"
Expand All @@ -638,6 +647,11 @@ def xlnx_generate_domain_dts(tgt_node, sdt, options):
timer_node + LopperProp("interrupts-extended = <&cpu0_intc 5>")
sdt.tree + timer_node

for node in sdt.tree['/'].subnodes():
if node.propval('xlnx,ip-name', list) == ['axi_intc']:
node + LopperProp("interrupts-extended = <&cpu0_intc 9>")
break

delete_unused_props( sdt.tree[match_cpunode] , driver_proplist, False)

if zephyr_dt:
Expand Down
Loading