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| author | Arnd Bergmann <arnd@arndb.de> | 2014-07-26 17:34:26 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2014-07-26 17:34:26 +0200 |
| commit | 03eea7cda20128f97fa281650ada69fe19194d56 (patch) | |
| tree | 9260e5bbf196bdfa6b1d23a3b3203fa19f45886c /arch | |
| parent | Merge tag 'misc-for-3.17' of git://github.com/hisilicon/linux-hisi into next/soc (diff) | |
| parent | ARM: rockchip: Add cpu hotplug support for RK3XXX SoCs (diff) | |
| download | linux-03eea7cda20128f97fa281650ada69fe19194d56.tar.xz linux-03eea7cda20128f97fa281650ada69fe19194d56.zip | |
Merge tag 'v3.17-rockchip-smp-hotplug' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/soc
Merge "CPU-Hotplug support for RK3066 and RK3188" from Heiko Stuebner:
* tag 'v3.17-rockchip-smp-hotplug' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: rockchip: Add cpu hotplug support for RK3XXX SoCs
ARM: rockchip: select ARMv7 compiler flags for platsmp.o
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-rockchip/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-rockchip/platsmp.c | 20 |
2 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile index 4377a1436a98..b29d8ead4cf2 100644 --- a/arch/arm/mach-rockchip/Makefile +++ b/arch/arm/mach-rockchip/Makefile @@ -1,2 +1,4 @@ +CFLAGS_platsmp.o := -march=armv7-a + obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip.o obj-$(CONFIG_SMP) += headsmp.o platsmp.o diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c index 910835d4ccf4..189684f55927 100644 --- a/arch/arm/mach-rockchip/platsmp.c +++ b/arch/arm/mach-rockchip/platsmp.c @@ -21,6 +21,7 @@ #include <linux/of_address.h> #include <asm/cacheflush.h> +#include <asm/cp15.h> #include <asm/smp_scu.h> #include <asm/smp_plat.h> #include <asm/mach/map.h> @@ -178,8 +179,27 @@ static void __init rockchip_smp_prepare_cpus(unsigned int max_cpus) pmu_set_power_domain(0 + i, false); } +#ifdef CONFIG_HOTPLUG_CPU +static int rockchip_cpu_kill(unsigned int cpu) +{ + pmu_set_power_domain(0 + cpu, false); + return 1; +} + +static void rockchip_cpu_die(unsigned int cpu) +{ + v7_exit_coherency_flush(louis); + while(1) + cpu_do_idle(); +} +#endif + static struct smp_operations rockchip_smp_ops __initdata = { .smp_prepare_cpus = rockchip_smp_prepare_cpus, .smp_boot_secondary = rockchip_boot_secondary, +#ifdef CONFIG_HOTPLUG_CPU + .cpu_kill = rockchip_cpu_kill, + .cpu_die = rockchip_cpu_die, +#endif }; CPU_METHOD_OF_DECLARE(rk3066_smp, "rockchip,rk3066-smp", &rockchip_smp_ops); |