Initial commit: OpenHarmony-v4.0-ReleaseOpenHarmony-v4.0-Release

1 files changed, 55 insertions, 0 deletions

diff --git a/arch/mips/pistachio/time.c b/arch/mips/pistachio/time.c
new file mode 100644
index 000000000..de64751de
--- /dev/null
+++ b/arch/mips/pistachio/time.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Pistachio clocksource/timer setup
+ *
+ * Copyright (C) 2014 Google, Inc.
+ */
+
+#include <linux/clk.h>
+#include <linux/clocksource.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_clk.h>
+
+#include <asm/mips-cps.h>
+#include <asm/time.h>
+
+unsigned int get_c0_compare_int(void)
+{
+        return gic_get_c0_compare_int();
+}
+
+int get_c0_perfcount_int(void)
+{
+        return gic_get_c0_perfcount_int();
+}
+EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
+int get_c0_fdc_int(void)
+{
+        return gic_get_c0_fdc_int();
+}
+
+void __init plat_time_init(void)
+{
+        struct device_node *np;
+        struct clk *clk;
+
+        of_clk_init(NULL);
+        timer_probe();
+
+        np = of_get_cpu_node(0, NULL);
+        if (!np) {
+                pr_err("Failed to get CPU node\n");
+                return;
+        }
+
+        clk = of_clk_get(np, 0);
+        if (IS_ERR(clk)) {
+                pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk));
+                return;
+        }
+
+        mips_hpt_frequency = clk_get_rate(clk) / 2;
+        clk_put(clk);
+}