linux-stable/arch/riscv/boot
Niklas Cassel 74583f1b92
riscv: dts: k210: fix broken IRQs on hart1
Commit 67d96729a9 ("riscv: Update Canaan Kendryte K210 device tree")
incorrectly removed two entries from the PLIC interrupt-controller node's
interrupts-extended property.

The PLIC driver cannot know the mapping between hart contexts and hart ids,
so this information has to be provided by device tree, as specified by the
PLIC device tree binding.

The PLIC driver uses the interrupts-extended property, and initializes the
hart context registers in the exact same order as provided by the
interrupts-extended property.

In other words, if we don't specify the S-mode interrupts, the PLIC driver
will simply initialize the hart0 S-mode hart context with the hart1 M-mode
configuration. It is therefore essential to specify the S-mode IRQs even
though the system itself will only ever be running in M-mode.

Re-add the S-mode interrupts, so that we get working IRQs on hart1 again.

Cc: <stable@vger.kernel.org>
Fixes: 67d96729a9 ("riscv: Update Canaan Kendryte K210 device tree")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-03-03 20:04:21 -08:00
..
dts riscv: dts: k210: fix broken IRQs on hart1 2022-03-03 20:04:21 -08:00
.gitignore riscv: Ignore Image.* and loader.bin 2020-11-09 11:54:46 -08:00
install.sh
loader.lds.S riscv: Move kernel mapping outside of linear mapping 2021-04-26 08:25:04 -07:00
loader.S riscv: provide a flat image loader 2019-11-17 15:17:39 -08:00
Makefile riscv: move the (z)install rules to arch/riscv/Makefile 2021-09-10 23:08:26 -07:00