[PATCH v2 0/2] arm64: dts: renesas: r8a77970: Add SMP Support
Geert Uytterhoeven
geert+renesas at glider.be
Wed May 9 08:23:21 PDT 2018
Hi Simon, Magnus,
This patch series enables SMP support on the R-Car V3M SoC, by adding
the second Cortex-A53 CPU core. It also adds the performance monitor
unit, and links it to both CPU cores.
Changes compared to v1:
- Adjust GIC_CPU_MASK_SIMPLE(),
- Use symbolic core clock and power domain indices,
- Move the pmu node from the soc subnode to the root node, as it
doesn't have registers.
Note that the PSCI implementation on Eagle may be a preliminary version
with some familiar quirks:
- SMP bringup works, and both CPUs can be used,
- Offlining CPU0 crashes the system,
- CPU1 can be offlined, but trying to bring it online again crashes
the system, too.
I'm confident these will be fixed in future firmware versions, just like
on H3/Salvator-X. Note that
git at github.com:renesas-rcar/arm-trusted-firmware.git does not have
support for R-Car V3M, V3H, and D3.
Thanks!
Geert Uytterhoeven (2):
arm64: dts: renesas: r8a77970: Add secondary CA53 CPU core
arm64: dts: renesas: r8a77970: Add Cortex-A53 PMU node
arch/arm64/boot/dts/renesas/r8a77970.dtsi | 27 ++++++++++++++++++++++-----
1 file changed, 22 insertions(+), 5 deletions(-)
--
2.7.4
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
More information about the linux-arm-kernel
mailing list