Dear All, ARM Architected Timers are present in all CortexA7/A15 based Samsung Exynos SoCs. So far they were not enabled, because there were some issues related to their initialization. Samsung Exynos SoCs used custom timer hardware - Exynos MultiCore Timer. It turned out that enabling MCT it is also needed to get ARM Architected Timers working, because they both share some common hardware blocks (global system counter). This patchset enables support for ARM Architected Timer driver together with a standard Exynos MultiCore Timer driver, which is kept as a default timer source on ARM 32bit platforms. Support for ARM architected timers is essential for enabling proper KVM support on those platforms. Best regards Marek Szyprowski Samsung R&D Institute Poland Changelog: v3: - checked the status of arch timer registers on all Exynos5 SoCs, dropped 'not-fw-configured' property on most of them as requested by Marc Zyngier - dropped enabling arch timers on Exynos3250, as there is no benefit from that (none of the Exynos3250-based board boots in HYP mode) v2: https://www.spinics.net/lists/arm-kernel/msg751017.html - dropped MCT patches (merged to v5.1) - dropped timer priority change patch (merged to v5.3) v1: https://www.spinics.net/lists/arm-kernel/msg751018.html - initial version, covers some MCT patches previously sent as a timer rework for Exynos5433 Patch summary: Marek Szyprowski (2): ARM: dts: exynos: Add support ARM architected timers on Exynos5 ARM: exynos: Enable support for ARM architected timers arch/arm/boot/dts/exynos5420-peach-pit.dts | 4 ++++ arch/arm/boot/dts/exynos54xx.dtsi | 9 +++++++++ arch/arm/boot/dts/exynos5800-peach-pi.dts | 4 ++++ arch/arm/mach-exynos/Kconfig | 1 + 4 files changed, 18 insertions(+) -- 2.17.1
