[U-Boot] [U-Boot,v3] armv7m: Add SysTick timer driver

[Tom Rini]

On Fri, Feb 17, 2017 at 08:22:17AM +0000, Phil Edworthy wrote:

> The SysTick is a 24-bit down counter that is found on all ARM Cortex
> M3, M4, M7 devices and is always located at a fixed address.
> 
> The number of reference clock ticks that correspond to 10ms is normally
> defined in the SysTick Calibration register's TENMS field. However, on some
> devices this is wrong, so this driver allows the clock rate to be defined
> using CONFIG_SYS_HZ_CLOCK.
> 
> Signed-off-by: Phil Edworthy <phil.edworthy at renesas.com>
> Reviewed-by: Vikas MANOCHA <vikas.manocha at st.com>

Applied to u-boot/master, thanks!

-- 
Tom
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