clk: at91: add PMC peripheral clocks
This patch adds new at91 peripheral clock implementation using common clk
framework.
Almost all peripherals provided by at91 SoCs need a clock to work properly.
This clock is enabled/disabled using PCER/PCDR resgisters.
Each peripheral is given an id (see atmel's datasheets) which is used to
define and reference peripheral clocks.
Some new SoCs (at91sam9x5 and sama5d3) provide a new register (PCR) where you
can configure the peripheral clock as a division of the master clock.
This will help reducing the peripherals power comsumption.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 9c8a397..a09212b 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -80,4 +80,9 @@
extern void __init of_at91rm9200_clk_sys_setup(struct device_node *np,
struct at91_pmc *pmc);
+extern void __init of_at91rm9200_clk_periph_setup(struct device_node *np,
+ struct at91_pmc *pmc);
+extern void __init of_at91sam9x5_clk_periph_setup(struct device_node *np,
+ struct at91_pmc *pmc);
+
#endif /* __PMC_H_ */