Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/arch/mips/loongson64/time.c b/arch/mips/loongson64/time.c
new file mode 100644
index 0000000000..f6d2c1e305
--- /dev/null
+++ b/arch/mips/loongson64/time.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ * Copyright (C) 2009 Lemote Inc.
+ * Author: Wu Zhangjin, wuzhangjin@gmail.com
+ */
+
+#include <asm/time.h>
+#include <asm/hpet.h>
+
+#include <loongson.h>
+#include <linux/clk.h>
+#include <linux/of_clk.h>
+
+void __init plat_time_init(void)
+{
+	struct clk *clk;
+	struct device_node *np;
+
+	if (loongson_sysconf.fw_interface == LOONGSON_DTB) {
+		of_clk_init(NULL);
+
+		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;
+		}
+
+		cpu_clock_freq = clk_get_rate(clk);
+		clk_put(clk);
+	}
+
+	/* setup mips r4k timer */
+	mips_hpt_frequency = cpu_clock_freq / 2;
+
+#ifdef CONFIG_RS780_HPET
+	setup_hpet_timer();
+#endif
+}