1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/clocksource/kvx_timer.c b/drivers/clocksource/kvx_timer.c
new file mode 100644
index 0000000000..eaa8f63b1e
--- /dev/null
+++ b/drivers/clocksource/kvx_timer.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2018 Kalray Inc.
+ */
+
+#include <common.h>
+#include <clock.h>
+#include <init.h>
+
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <asm/sfr.h>
+
+static uint64_t kvx_pm_read(void)
+{
+	return kvx_sfr_get(PM0);
+}
+
+static struct clocksource kvx_clksrc = {
+	.read	= kvx_pm_read,
+	.mask	= CLOCKSOURCE_MASK(64),
+	.shift	= 0,
+	.priority = 70,
+};
+
+static int kvx_timer_probe(struct device *dev)
+{
+	struct clk *clk;
+	uint32_t clk_freq;
+
+	/* Get clock frequency */
+	clk = clk_get(dev, NULL);
+	if (IS_ERR(clk)) {
+		dev_err(dev, "Failed to get CPU clock: %ld\n", PTR_ERR(clk));
+		return PTR_ERR(clk);
+	}
+
+	clk_freq = clk_get_rate(clk);
+	clk_put(clk);
+
+	/* Init clocksource */
+	kvx_clksrc.mult = clocksource_hz2mult(clk_freq, kvx_clksrc.shift);
+
+	return init_clock(&kvx_clksrc);
+}
+
+static struct of_device_id kvx_timer_dt_ids[] = {
+	{ .compatible = "kalray,kvx-core-timer", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, kvx_timer_dt_ids);
+
+static struct driver kvx_timer_driver = {
+	.name = "kvx-timer",
+	.probe = kvx_timer_probe,
+	.of_compatible = DRV_OF_COMPAT(kvx_timer_dt_ids),
+};
+
+postcore_platform_driver(kvx_timer_driver);