On Fri, 2013-02-22 at 21:00 +0800, Peter De Schrijver wrote: > On Fri, Feb 22, 2013 at 07:44:49AM +0100, Joseph Lo wrote: > > Adding the power on function for secondary CPUs in PMC driver, this can > > help us to remove legacy powergate driver and add generic power domain > > support later. > > > > Signed-off-by: Joseph Lo <[email protected]> > > --- > > arch/arm/mach-tegra/pmc.c | 105 > > +++++++++++++++++++++++++++++++++++++++++++++- > > arch/arm/mach-tegra/pmc.h | 4 ++ > > 2 files changed, 107 insertions(+), 2 deletions(-) > > > > diff --git a/arch/arm/mach-tegra/pmc.c b/arch/arm/mach-tegra/pmc.c > > index 2315e25..a2446c2 100644 > > --- a/arch/arm/mach-tegra/pmc.c > > +++ b/arch/arm/mach-tegra/pmc.c > > @@ -21,8 +21,26 @@ > > #include <linux/of.h> > > #include <linux/of_address.h> > > > > -#define PMC_CTRL 0x0 > > -#define PMC_CTRL_INTR_LOW (1 << 17) > > +#define PMC_CTRL 0x0 > > +#define PMC_CTRL_INTR_LOW (1 << 17) > > +#define PMC_PWRGATE_TOGGLE 0x30 > > +#define PMC_PWRGATE_TOGGLE_START (1 << 8) > > +#define PMC_REMOVE_CLAMPING 0x34 > > +#define PMC_PWRGATE_STATUS 0x38 > > + > > +#define TEGRA_POWERGATE_PCIE 3 > > +#define TEGRA_POWERGATE_VDEC 4 > > +#define TEGRA_POWERGATE_CPU1 9 > > +#define TEGRA_POWERGATE_CPU2 10 > > +#define TEGRA_POWERGATE_CPU3 11 > > + > > +static u8 tegra_cpu_domains[] = { > > + 0xFF, /* not available for CPU0 */ > > On Tegra114 we can also powergate CPU0, so this needs to be defined then. > No, DON'T DO THAT!! We don't allow any code to power gate CPU0 manually here or elsewhere.
The function here only for SMP and hotplug bring up for secondary CPU. Thanks, Joseph -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
