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| author | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2010-06-16 20:49:48 +0400 |
|---|---|---|
| committer | Kevin Hilman <khilman@ti.com> | 2011-12-08 23:29:00 +0400 |
| commit | b2b9762f76981c16a8768255284efeae7f27e4f1 (patch) | |
| tree | 3538b853da88eedeb2c64646b9555736000ba73a /arch/arm/mach-omap2/omap-smp.c | |
| parent | fcf6efa3ffbc3cc19e7abe39e0b90f497df2fc42 (diff) | |
| download | linux-b2b9762f76981c16a8768255284efeae7f27e4f1.tar.xz | |
ARM: OMAP4: PM: Add CPUX OFF mode support
This patch adds the CPU0 and CPU1 off mode support. CPUX close switch
retention (CSWR) is not supported by hardware design.
The CPUx OFF mode isn't supported on OMAP4430 ES1.0
CPUx sleep code is common for hotplug, suspend and CPUilde.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Tested-by: Vishwanath BS <vishwanath.bs@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/omap-smp.c')
| -rw-r--r-- | arch/arm/mach-omap2/omap-smp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c index 74e90b40a0c7..ee83808de0ff 100644 --- a/arch/arm/mach-omap2/omap-smp.c +++ b/arch/arm/mach-omap2/omap-smp.c @@ -24,6 +24,7 @@ #include <asm/hardware/gic.h> #include <asm/smp_scu.h> #include <mach/hardware.h> +#include <mach/omap-secure.h> #include "common.h" @@ -40,6 +41,18 @@ void __iomem *omap4_get_scu_base(void) void __cpuinit platform_secondary_init(unsigned int cpu) { /* + * Configure ACTRL and enable NS SMP bit access on CPU1 on HS device. + * OMAP44XX EMU/HS devices - CPU0 SMP bit access is enabled in PPA + * init and for CPU1, a secure PPA API provided. CPU0 must be ON + * while executing NS_SMP API on CPU1 and PPA version must be 1.4.0+. + * OMAP443X GP devices- SMP bit isn't accessible. + * OMAP446X GP devices - SMP bit access is enabled on both CPUs. + */ + if (cpu_is_omap443x() && (omap_type() != OMAP2_DEVICE_TYPE_GP)) + omap_secure_dispatcher(OMAP4_PPA_CPU_ACTRL_SMP_INDEX, + 4, 0, 0, 0, 0, 0); + + /* * If any interrupts are already enabled for the primary * core (e.g. timer irq), then they will not have been enabled * for us: do so |