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clk: Support for clock parents and rates assigned from device tree

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This patch adds helper functions to configure clock parents and rates
as specified through 'assigned-clock-parents', 'assigned-clock-rates'
DT properties for a clock provider or clock consumer device.
The helpers are now being called by the bus code for the platform, I2C
and SPI busses, before the driver probing and also in the clock core
after registration of a clock provider.

Signed-off-by: Sylwester Nawrocki <[email protected]>
Acked-by: Kyungmin Park <[email protected]>
Signed-off-by: Mike Turquette <[email protected]>
This commit is contained in:
Sylwester Nawrocki 2014-06-18 17:29:32 +02:00 • committed by Mike Turquette
commit 86be408bfb
8 changed files with 227 additions and 2 deletions
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5
drivers/base/platform.c
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@ -23,6 +23,7 @@
#include <linux/pm_runtime.h>
#include <linux/idr.h>
#include <linux/acpi.h>
#include <linux/clk/clk-conf.h>
#include "base.h"
#include "power/power.h"
@ -489,6 +490,10 @@ static int platform_drv_probe(struct device *_dev)
struct platform_device *dev = to_platform_device(_dev);
int ret;
ret = of_clk_set_defaults(_dev->of_node, false);
if (ret < 0)
return ret;
acpi_dev_pm_attach(_dev, true);
ret = drv->probe(dev);