| Message ID | 1364205910-32392-6-git-send-email-santosh.shilimkar@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Santosh Shilimkar <santosh.shilimkar@ti.com> writes: > Enables MPUSS ES2 power management mode using ES2_PM_MODE in > AMBA_IF_MODE register. > > 0x0: ES1 behavior, CPU cores would enter and exit OFF mode together. Broken What is broken? > 0x1: ES2 behavior, CPU cores are allowed to enter/exit OFF mode independently. > > The AMBA_IF_MODE register value is stored on SAR RAM and restored by > ROM code. > > Acked-by: Nishanth Menon <nm@ti.com> > Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> > --- > arch/arm/mach-omap2/omap-secure.h | 2 ++ > arch/arm/mach-omap2/omap-wakeupgen.c | 19 +++++++++++++++++++ > arch/arm/mach-omap2/omap-wakeupgen.h | 1 + > 3 files changed, 22 insertions(+) > > diff --git a/arch/arm/mach-omap2/omap-secure.h b/arch/arm/mach-omap2/omap-secure.h > index 0e72917..82b3c4c 100644 > --- a/arch/arm/mach-omap2/omap-secure.h > +++ b/arch/arm/mach-omap2/omap-secure.h > @@ -42,6 +42,8 @@ > #define OMAP4_MON_L2X0_AUXCTRL_INDEX 0x109 > #define OMAP4_MON_L2X0_PREFETCH_INDEX 0x113 > > +#define OMAP5_MON_AMBA_IF_INDEX 0x108 > + > /* Secure PPA(Primary Protected Application) APIs */ > #define OMAP4_PPA_L2_POR_INDEX 0x23 > #define OMAP4_PPA_CPU_ACTRL_SMP_INDEX 0x25 > diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c > index f8bb3b9..8bcaa8c 100644 > --- a/arch/arm/mach-omap2/omap-wakeupgen.c > +++ b/arch/arm/mach-omap2/omap-wakeupgen.c > @@ -42,6 +42,7 @@ > #define CPU1_ID 0x1 > #define OMAP4_NR_BANKS 4 > #define OMAP4_NR_IRQS 128 > +#define OMAP5_AMBA_IF_PM_MODE (1 << 5) nit: use BIT() Kevin -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Thursday 04 April 2013 01:55 AM, Kevin Hilman wrote: > Santosh Shilimkar <santosh.shilimkar@ti.com> writes: > >> Enables MPUSS ES2 power management mode using ES2_PM_MODE in >> AMBA_IF_MODE register. >> >> 0x0: ES1 behavior, CPU cores would enter and exit OFF mode together. Broken > > What is broken? > Should have added clarification here. Sorry. Changelog is updated as below 0x0: ES1 behavior, CPU cores would enter and exit OFF mode together. 0x1: ES2 behavior, CPU cores are allowed to enter/exit OFF mode independently. ES1.0 CPUx OFF mode behavior never worked and after analysis by design team, it was declared as a broken hardware feature. That lead to addition of ES2.0 behavior which works. >> 0x1: ES2 behavior, CPU cores are allowed to enter/exit OFF mode independently. >> >> The AMBA_IF_MODE register value is stored on SAR RAM and restored by >> ROM code. >> >> Acked-by: Nishanth Menon <nm@ti.com> >> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> >> --- [..] >> diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c >> index f8bb3b9..8bcaa8c 100644 >> --- a/arch/arm/mach-omap2/omap-wakeupgen.c >> +++ b/arch/arm/mach-omap2/omap-wakeupgen.c >> @@ -42,6 +42,7 @@ >> #define CPU1_ID 0x1 >> #define OMAP4_NR_BANKS 4 >> #define OMAP4_NR_IRQS 128 >> +#define OMAP5_AMBA_IF_PM_MODE (1 << 5) > > nit: use BIT() > Ok. Regards, santosh -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/arm/mach-omap2/omap-secure.h b/arch/arm/mach-omap2/omap-secure.h index 0e72917..82b3c4c 100644 --- a/arch/arm/mach-omap2/omap-secure.h +++ b/arch/arm/mach-omap2/omap-secure.h @@ -42,6 +42,8 @@ #define OMAP4_MON_L2X0_AUXCTRL_INDEX 0x109 #define OMAP4_MON_L2X0_PREFETCH_INDEX 0x113 +#define OMAP5_MON_AMBA_IF_INDEX 0x108 + /* Secure PPA(Primary Protected Application) APIs */ #define OMAP4_PPA_L2_POR_INDEX 0x23 #define OMAP4_PPA_CPU_ACTRL_SMP_INDEX 0x25 diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c index f8bb3b9..8bcaa8c 100644 --- a/arch/arm/mach-omap2/omap-wakeupgen.c +++ b/arch/arm/mach-omap2/omap-wakeupgen.c @@ -42,6 +42,7 @@ #define CPU1_ID 0x1 #define OMAP4_NR_BANKS 4 #define OMAP4_NR_IRQS 128 +#define OMAP5_AMBA_IF_PM_MODE (1 << 5) static void __iomem *wakeupgen_base; static void __iomem *sar_base; @@ -265,6 +266,11 @@ static inline void omap5_irq_save_context(void) val = __raw_readl(wakeupgen_base + OMAP_AUX_CORE_BOOT_0); __raw_writel(val, sar_base + OMAP5_AUXCOREBOOT1_OFFSET); + /* Save AMBA_IF_PM_MODE regsiter */ + val = __raw_readl(wakeupgen_base + OMAP_AMBA_IF_MODE); + val |= OMAP5_AMBA_IF_PM_MODE; + __raw_writel(val, sar_base + OMAP5_AMBA_IF_MODE_OFFSET); + /* Set the Backup Bit Mask status */ val = __raw_readl(sar_base + OMAP5_SAR_BACKUP_STATUS_OFFSET); val |= SAR_BACKUP_STATUS_WAKEUPGEN; @@ -402,6 +408,7 @@ int __init omap_wakeupgen_init(void) { int i; unsigned int boot_cpu = smp_processor_id(); + u32 val; /* Not supported on OMAP4 ES1.0 silicon */ if (omap_rev() == OMAP4430_REV_ES1_0) { @@ -443,6 +450,18 @@ int __init omap_wakeupgen_init(void) for (i = 0; i < max_irqs; i++) irq_target_cpu[i] = boot_cpu; + /* + * Enables OMAP5 ES2 PM Mode using ES2_PM_MODE in AMBA_IF_MODE + * 0x0: ES1 behavior, CPU cores would enter and exit OFF mode together. + * 0x1: ES2 behavior, CPU cores are allowed to enter/exit OFF mode + * independently. + */ + if (soc_is_omap54xx()) { + val = __raw_readl(wakeupgen_base + OMAP_AMBA_IF_MODE); + val |= OMAP5_AMBA_IF_PM_MODE; + omap_smc1(OMAP5_MON_AMBA_IF_INDEX, val); + } + irq_hotplug_init(); irq_pm_init(); diff --git a/arch/arm/mach-omap2/omap-wakeupgen.h b/arch/arm/mach-omap2/omap-wakeupgen.h index b0fd16f..b3c8ecc 100644 --- a/arch/arm/mach-omap2/omap-wakeupgen.h +++ b/arch/arm/mach-omap2/omap-wakeupgen.h @@ -27,6 +27,7 @@ #define OMAP_WKG_ENB_E_1 0x420 #define OMAP_AUX_CORE_BOOT_0 0x800 #define OMAP_AUX_CORE_BOOT_1 0x804 +#define OMAP_AMBA_IF_MODE 0x80c #define OMAP_PTMSYNCREQ_MASK 0xc00 #define OMAP_PTMSYNCREQ_EN 0xc04 #define OMAP_TIMESTAMPCYCLELO 0xc08