diff options
Diffstat (limited to 'arch/microblaze/kernel/timer.c')
| -rw-r--r-- | arch/microblaze/kernel/timer.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c index 3e39b1082fdf..55b19400951f 100644 --- a/arch/microblaze/kernel/timer.c +++ b/arch/microblaze/kernel/timer.c @@ -230,9 +230,9 @@ static int timer_initialized; static void __init xilinx_timer_init(struct device_node *timer) { + struct clk *clk; u32 irq; u32 timer_num = 1; - int ret; timer_baseaddr = of_iomap(timer, 0); if (!timer_baseaddr) { @@ -250,10 +250,20 @@ static void __init xilinx_timer_init(struct device_node *timer) pr_info("%s: irq=%d\n", timer->full_name, irq); - /* If there is clock-frequency property than use it */ - ret = of_property_read_u32(timer, "clock-frequency", &timer_clock_freq); - if (ret < 0) + clk = of_clk_get(timer, 0); + if (IS_ERR(clk)) { + pr_err("ERROR: timer CCF input clock not found\n"); + /* If there is clock-frequency property than use it */ + of_property_read_u32(timer, "clock-frequency", + &timer_clock_freq); + } else { + timer_clock_freq = clk_get_rate(clk); + } + + if (!timer_clock_freq) { + pr_err("ERROR: Using CPU clock frequency\n"); timer_clock_freq = cpuinfo.cpu_clock_freq; + } freq_div_hz = timer_clock_freq / HZ; |