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clk: Provide OF helper to mark clocks as CRITICAL

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This call matches clocks which have been marked as critical in DT
and sets the appropriate flag.  These flags can then be used to
mark the clock core flags appropriately prior to registration.

Legacy bindings requiring this feature must add the clock-critical
property to their binding descriptions, as it is not a part of
common-clock binding.

Cc: devicetree@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1455225554-13267-4-git-send-email-mturquette@baylibre.com
This commit is contained in:
Lee Jones
2016-02-11 13:19:11 -08:00
committed by Michael Turquette
parent 2e20fbf592
commit d56f8994b6
2 changed files with 42 additions and 1 deletions
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8
include/linux/clk-provider.h
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@@ -721,7 +721,8 @@ unsigned int of_clk_get_parent_count(struct device_node *np);
int of_clk_parent_fill(struct device_node *np, const char **parents,
unsigned int size);
const char *of_clk_get_parent_name(struct device_node *np, int index);
int of_clk_detect_critical(struct device_node *np, int index,
unsigned long *flags);
void of_clk_init(const struct of_device_id *matches);
#else /* !CONFIG_OF */
@@ -758,6 +759,11 @@ static inline const char *of_clk_get_parent_name(struct device_node *np,
{
return NULL;
}
static inline int of_clk_detect_critical(struct device_node *np, int index,
unsigned long *flags)
{
return 0;
}
static inline void of_clk_init(const struct of_device_id *matches) {}
#endif /* CONFIG_OF */