[PATCH 0/4] Fixes for DT CPU topology specification on Exynos
Tomasz Figa
t.figa at samsung.com
Thu May 8 08:24:56 PDT 2014
Hi,
On 18.04.2014 16:42, Tomasz Figa wrote:
> Due to some parts of Exynos SoC support designed originally in a non-scalable
> way, relying on 1:1 mapping between value returned by cpu_logical_map() and
> CPU IDs as seen by PMU and GIC, trying to specify CPU topology in device tree
> caused various boot-up issues on Exynos SoCs, ranging from CPUs other than 0
> failing to boot to crashes due to GIC driver accessing registers out of range.
>
> This series attempts to fix aforementioned issues by removing incorrect
> assumptions from Exynos SoC core code and GIC driver and then adding CPU
> topology data to device tree sources of Exynos4.
>
> [On Exynos4210-based TRATS and Exynos4412-based TRATS2 board]
> Tested-by: Tomasz Figa <t.figa at samsung.com>
>
> Tomasz Figa (4):
> ARM: EXYNOS: Fix definitions of S5P_ARM_CORE_* registers
> ARM: EXYNOS: Fix core ID used by platsmp and hotplug code
> irqchip: gic: Add support for per CPU bank offset specification in DT
> ARM: dts: exynos4: Add CPU topology data
>
> Documentation/devicetree/bindings/arm/cpus.txt | 7 ++
> Documentation/devicetree/bindings/arm/gic.txt | 34 +++++++++-
> arch/arm/boot/dts/exynos4210.dtsi | 19 ++++++
> arch/arm/boot/dts/exynos4212.dtsi | 19 ++++++
> arch/arm/boot/dts/exynos4412.dtsi | 37 ++++++++--
> arch/arm/mach-exynos/hotplug.c | 10 +--
> arch/arm/mach-exynos/platsmp.c | 31 +++++----
> arch/arm/mach-exynos/regs-pmu.h | 4 +-
> drivers/irqchip/irq-gic.c | 94 ++++++++++++++++++--------
> 9 files changed, 202 insertions(+), 53 deletions(-)
>
Any comments for this series? I'm especially interested in hearing some
opinions about patch 3/4, which extends DT bindings of ARM GIC.
Best regards,
Tomasz
More information about the linux-arm-kernel
mailing list