diff options
Diffstat (limited to 'arch/microblaze/kernel/cpu/cpuinfo.c')
| -rw-r--r-- | arch/microblaze/kernel/cpu/cpuinfo.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/arch/microblaze/kernel/cpu/cpuinfo.c b/arch/microblaze/kernel/cpu/cpuinfo.c index c9203b1007aa..234acad79b9e 100644 --- a/arch/microblaze/kernel/cpu/cpuinfo.c +++ b/arch/microblaze/kernel/cpu/cpuinfo.c @@ -8,6 +8,7 @@ * for more details. */ +#include <linux/clk.h> #include <linux/init.h> #include <asm/cpuinfo.h> #include <asm/pvr.h> @@ -39,6 +40,7 @@ const struct cpu_ver_key cpu_ver_lookup[] = { {"8.30.a", 0x17}, {"8.40.a", 0x18}, {"8.40.b", 0x19}, + {"8.50.a", 0x1a}, {"9.0", 0x1b}, {"9.1", 0x1d}, {NULL, 0}, @@ -68,11 +70,10 @@ const struct family_string_key family_string_lookup[] = { }; struct cpuinfo cpuinfo; +static struct device_node *cpu; void __init setup_cpuinfo(void) { - struct device_node *cpu = NULL; - cpu = (struct device_node *) of_find_node_by_type(NULL, "cpu"); if (!cpu) pr_err("You don't have cpu!!!\n"); @@ -102,3 +103,22 @@ void __init setup_cpuinfo(void) pr_warn("%s: Stream instructions enabled" " - USERSPACE CAN LOCK THIS KERNEL!\n", __func__); } + +void __init setup_cpuinfo_clk(void) +{ + struct clk *clk; + + clk = of_clk_get(cpu, 0); + if (IS_ERR(clk)) { + pr_err("ERROR: CPU CCF input clock not found\n"); + /* take timebase-frequency from DTS */ + cpuinfo.cpu_clock_freq = fcpu(cpu, "timebase-frequency"); + } else { + cpuinfo.cpu_clock_freq = clk_get_rate(clk); + } + + if (!cpuinfo.cpu_clock_freq) { + pr_err("ERROR: CPU clock frequency not setup\n"); + BUG(); + } +} |