[GIT PULL] OpenRISC updates for 6.20

[Stafford Horne]

Hello Linus,

Please consider for pull,

The following changes since commit 0f61b1860cc3f52aef9036d7235ed1f017632193:

  Linux 6.19-rc5 (2026-01-11 17:03:14 -1000)

are available in the Git repository at:

  https://github.com/openrisc/linux.git tags/for-linus

for you to fetch changes up to 0dfffa5479d6260d04d021f69203b1926f73d889:

  openrisc: define arch-specific version of nop() (2026-01-20 19:24:05 +0000)

----------------------------------------------------------------
OpenRISC updates for 6.20

The main focus for this series has been to improve OpenRISC
kernel out-of-the-box support for FPGA dev boards.

 - Adds device tree configurations for De0 Nano single and
   multicore configurations.
 - Fixes bug in OpenRISC SMP preventing the kernel from running on FPGA
   boards, due to IPIs not being unmasked on secondary CPUs in some
   configurations.
 - Picked up a fix from Brian Masney defining the nop() macro to fix
   build failures on OpenRISC for drivers using the nop() macro.

----------------------------------------------------------------
Brian Masney (1):
      openrisc: define arch-specific version of nop()

Stafford Horne (4):
      openrisc: dts: Add de0 nano config and devicetree
      openrisc: Fix IPIs on simple multicore systems
      openrisc: dts: Split simple smp dts to dts and dtsi
      openrisc: dts: Add de0 nano multicore config and devicetree

 arch/openrisc/boot/dts/de0-nano-common.dtsi        | 42 ++++++++++
 arch/openrisc/boot/dts/de0-nano-multicore.dts      | 25 ++++++
 arch/openrisc/boot/dts/de0-nano.dts                | 54 +++++++++++++
 arch/openrisc/boot/dts/simple-smp.dts              | 25 ++++++
 .../boot/dts/{simple_smp.dts => simple-smp.dtsi}   | 11 ++-
 arch/openrisc/configs/de0_nano_defconfig           | 79 +++++++++++++++++++
 arch/openrisc/configs/de0_nano_multicore_defconfig | 92 ++++++++++++++++++++++
 arch/openrisc/configs/simple_smp_defconfig         |  2 +-
 arch/openrisc/include/asm/barrier.h                |  2 +
 arch/openrisc/include/asm/smp.h                    |  3 +-
 arch/openrisc/kernel/smp.c                         | 22 +++++-
 drivers/irqchip/irq-ompic.c                        | 15 +++-
 drivers/irqchip/irq-or1k-pic.c                     | 27 ++++++-
 13 files changed, 385 insertions(+), 14 deletions(-)
 create mode 100644 arch/openrisc/boot/dts/de0-nano-common.dtsi
 create mode 100644 arch/openrisc/boot/dts/de0-nano-multicore.dts
 create mode 100644 arch/openrisc/boot/dts/de0-nano.dts
 create mode 100644 arch/openrisc/boot/dts/simple-smp.dts
 rename arch/openrisc/boot/dts/{simple_smp.dts => simple-smp.dtsi} (90%)
 create mode 100644 arch/openrisc/configs/de0_nano_defconfig
 create mode 100644 arch/openrisc/configs/de0_nano_multicore_defconfig