[U-Boot] [U-Boot, v3] arm: at91: clock: Add the generated clock support

[Andreas Bießmann]

Dear Wenyou Yang,

Wenyou Yang <wenyou.yang at atmel.com> writes:
>Some peripherals may need a second clock source that may be different
>from the system clock. This second clock is the generated clock (GCK)
>and is managed by the PMC via PMC_PCR.
>
>For simplicity, the clock source of the GCK is fixed to PLLA_CLK.
>
>Signed-off-by: Wenyou Yang <wenyou.yang at atmel.com>
>Reviewed-by: Andreas Bießmann <andreas.devel at googlemail.com>
>---
>
>Changes in v3:
>1./ add arguments for at91_enable_periph_generated_clk().
>2./ add return value for at91_enable_periph_generated_clk().
>
>Changes in v2:
>1./ add timeout to wait for GCK ready.
>2./ add warning for timeout to wait for GCK ready.
>3./ add printout when the improper GCK clock source is selected.
>4./ rework AT91_PMC_PCR_GCKDIV_(x) macro to make sure x is right.
>
> arch/arm/mach-at91/armv7/clock.c           |   95 ++++++++++++++++++++++++++++
> arch/arm/mach-at91/include/mach/at91_pmc.h |   13 ++++
> arch/arm/mach-at91/include/mach/clk.h      |   10 +++
> 3 files changed, 118 insertions(+)

applied to u-boot-atmel/master, thanks!

Best regards,
Andreas Bießmann