On Mon, 24 Jun 2013, Srinivas KANDAGATLA wrote: > From: Stuart Menefy <stuart.menefy@xxxxxx> > > This is a simple driver for the global timer module found in the Cortex > A9-MP cores from revision r1p0 onwards. This should be able to perform > the functions of the system timer and the local timer in an SMP system. > > The global timer has the following features: > The global timer is a 64-bit incrementing counter with an > auto-incrementing feature. It continues incrementing after sending > interrupts. The global timer is memory mapped in the private memory > region. > The global timer is accessible to all Cortex-A9 processors in the > cluster. Each Cortex-A9 processor has a private 64-bit comparator that > is used to assert a private interrupt when the global timer has reached > the comparator value. All the Cortex-A9 processors in a design use the > banked ID, ID27, for this interrupt. ID27 is sent to the Interrupt > Controller as a Private Peripheral Interrupt. The global timer is > clocked by PERIPHCLK. > > Signed-off-by: Stuart Menefy <stuart.menefy@xxxxxx> > Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxx> > CC: Arnd Bergmann <arnd@xxxxxxxx> > CC: Rob Herring <robherring2@xxxxxxxxx> > CC: Linus Walleij <linus.walleij@xxxxxxxxxx> > CC: Will Deacon <will.deacon@xxxxxxx> > CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
