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powerpc/fsl_soc: improve and simplify fsl_get_sys_freq

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Use of_property_read_u32 instead of the generic of_get_property to
simplify the code. In addition move the declaration of sysfreq
into fsl_get_sys_freq because it's private to this function.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
Heiner Kallweit 2016-10-29 16:27:14 +02:00 committed by Scott Wood
parent 00b6cfc4c4
commit 5bda6c0eb7
1 changed files with 4 additions and 10 deletions
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14
arch/powerpc/sysdev/fsl_soc.c
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@ -77,13 +77,10 @@ phys_addr_t get_immrbase(void)
EXPORT_SYMBOL(get_immrbase);
static u32 sysfreq = -1;
u32 fsl_get_sys_freq(void)
{
static u32 sysfreq = -1;
struct device_node *soc;
const u32 *prop;
int size;
if (sysfreq != -1)
return sysfreq;
@ -92,12 +89,9 @@ u32 fsl_get_sys_freq(void)
if (!soc)
return -1;
prop = of_get_property(soc, "clock-frequency", &size);
if (!prop || size != sizeof(*prop) || *prop == 0)
prop = of_get_property(soc, "bus-frequency", &size);
if (prop && size == sizeof(*prop))
sysfreq = *prop;
of_property_read_u32(soc, "clock-frequency", &sysfreq);
if (sysfreq == -1 || !sysfreq)
of_property_read_u32(soc, "bus-frequency", &sysfreq);
of_node_put(soc);
return sysfreq;