diff options
Diffstat (limited to 'arch/arc/kernel/setup.c')
| -rw-r--r-- | arch/arc/kernel/setup.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 0385df77a697..fa62404ba58f 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -10,6 +10,9 @@ #include <linux/fs.h> #include <linux/delay.h> #include <linux/root_dev.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clocksource.h> #include <linux/console.h> #include <linux/module.h> #include <linux/cpu.h> @@ -234,11 +237,11 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len) is_isa_arcompact() ? "ARCompact" : "ARCv2", IS_AVAIL1(cpu->isa.be, "[Big-Endian]")); - n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ", + n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s%s%s\nISA Extn\t: ", IS_AVAIL1(cpu->extn.timer0, "Timer0 "), IS_AVAIL1(cpu->extn.timer1, "Timer1 "), - IS_AVAIL2(cpu->extn.rtc, "Local-64-bit-Ctr ", - CONFIG_ARC_HAS_RTC)); + IS_AVAIL2(cpu->extn.rtc, "RTC [UP 64-bit] ", CONFIG_ARC_TIMERS_64BIT), + IS_AVAIL2(cpu->extn.gfrc, "GFRC [SMP 64-bit] ", CONFIG_ARC_TIMERS_64BIT)); n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s", IS_AVAIL2(cpu->isa.atomic, "atomic ", CONFIG_ARC_HAS_LLSC), @@ -449,6 +452,15 @@ void __init setup_arch(char **cmdline_p) arc_unwind_init(); } +/* + * Called from start_kernel() - boot CPU only + */ +void __init time_init(void) +{ + of_clk_init(NULL); + clocksource_probe(); +} + static int __init customize_machine(void) { if (machine_desc->init_machine) @@ -477,8 +489,9 @@ static int show_cpuinfo(struct seq_file *m, void *v) { char *str; int cpu_id = ptr_to_cpu(v); - struct device_node *core_clk = of_find_node_by_name(NULL, "core_clk"); - u32 freq = 0; + struct device *cpu_dev = get_cpu_device(cpu_id); + struct clk *cpu_clk; + unsigned long freq = 0; if (!cpu_online(cpu_id)) { seq_printf(m, "processor [%d]\t: Offline\n", cpu_id); @@ -491,9 +504,15 @@ static int show_cpuinfo(struct seq_file *m, void *v) seq_printf(m, arc_cpu_mumbojumbo(cpu_id, str, PAGE_SIZE)); - of_property_read_u32(core_clk, "clock-frequency", &freq); + cpu_clk = clk_get(cpu_dev, NULL); + if (IS_ERR(cpu_clk)) { + seq_printf(m, "CPU speed \t: Cannot get clock for processor [%d]\n", + cpu_id); + } else { + freq = clk_get_rate(cpu_clk); + } if (freq) - seq_printf(m, "CPU speed\t: %u.%02u Mhz\n", + seq_printf(m, "CPU speed\t: %lu.%02lu Mhz\n", freq / 1000000, (freq / 10000) % 100); seq_printf(m, "Bogo MIPS\t: %lu.%02lu\n", |
