On 20/01/2023 15:10, Yann Sionneau wrote:

+static int __init setup_cpuinfo(void)
+{
+	int cpu;
+	struct clk *clk;
+	unsigned long cpu_freq = 1000000000;
+	struct device_node *node = of_get_cpu_node(0, NULL);
+
+	clk = of_clk_get(node, 0);
+	if (IS_ERR(clk)) {
+		printk(KERN_WARNING
+		       "Device tree missing CPU 'clock' parameter. Assuming frequency is 1GHZ");
+		goto setup_cpu_freq;
+	}
+
+	cpu_freq = clk_get_rate(clk);

What about cpufreq? I don't think this is useful.

Best regards,
Krzysztof