diff options
Diffstat (limited to 'drivers/cpufreq/qoriq-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/qoriq-cpufreq.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/drivers/cpufreq/qoriq-cpufreq.c b/drivers/cpufreq/qoriq-cpufreq.c index bfec1bc..e2ea433 100644 --- a/drivers/cpufreq/qoriq-cpufreq.c +++ b/drivers/cpufreq/qoriq-cpufreq.c @@ -52,17 +52,27 @@ static u32 get_bus_freq(void) { struct device_node *soc; u32 sysfreq; + struct clk *pltclk; + int ret; + /* get platform freq by searching bus-frequency property */ soc = of_find_node_by_type(NULL, "soc"); - if (!soc) - return 0; - - if (of_property_read_u32(soc, "bus-frequency", &sysfreq)) - sysfreq = 0; + if (soc) { + ret = of_property_read_u32(soc, "bus-frequency", &sysfreq); + of_node_put(soc); + if (!ret) + return sysfreq; + } - of_node_put(soc); + /* get platform freq by its clock name */ + pltclk = clk_get(NULL, "cg-pll0-div1"); + if (IS_ERR(pltclk)) { + pr_err("%s: can't get bus frequency %ld\n", + __func__, PTR_ERR(pltclk)); + return PTR_ERR(pltclk); + } - return sysfreq; + return clk_get_rate(pltclk); } static struct clk *cpu_to_clk(int cpu) |
