[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