clk: at91: rework main clk implementation

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AT91 main clk is a clk multiplexer and not a simple fixed rate clk as
currently implemented.

In some SoCs (sam9x5, sama5, sam9g45 families) this multiplexer can
choose among 2 sources: an internal RC oscillator circuit and an
oscillator using an external crystal.

In other Socs (sam9260, rm9200 families) the multiplexer source is
hardcoded to the external crystal oscillator.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

...

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Boris BREZILLON 2014-05-07 18:00:08 +02:00 • committed by Nicolas Ferre

parent cf2e933ce6

commit 27cb1c2083

3 changed files with 532 additions and 63 deletions

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599

drivers/clk/at91/clk-main.c

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12

drivers/clk/at91/pmc.c

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6

drivers/clk/at91/pmc.h

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