1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/clk/clk_octeon.c b/drivers/clk/clk_octeon.c
new file mode 100644
index 0000000000..fd559e05fc
--- /dev/null
+++ b/drivers/clk/clk_octeon.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Stefan Roese <sr@denx.de>
+ */
+
+#include <clk-uclass.h>
+#include <dm.h>
+#include <dt-bindings/clock/octeon-clock.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct octeon_clk_priv {
+	u64 core_clk;
+	u64 io_clk;
+};
+
+static int octeon_clk_enable(struct clk *clk)
+{
+	/* Nothing to do on Octeon */
+	return 0;
+}
+
+static ulong octeon_clk_get_rate(struct clk *clk)
+{
+	struct octeon_clk_priv *priv = dev_get_priv(clk->dev);
+
+	switch (clk->id) {
+	case OCTEON_CLK_CORE:
+		return priv->core_clk;
+
+	case OCTEON_CLK_IO:
+		return priv->io_clk;
+
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
+static struct clk_ops octeon_clk_ops = {
+	.enable = octeon_clk_enable,
+	.get_rate = octeon_clk_get_rate,
+};
+
+static const struct udevice_id octeon_clk_ids[] = {
+	{ .compatible = "mrvl,octeon-clk" },
+	{ /* sentinel */ }
+};
+
+static int octeon_clk_probe(struct udevice *dev)
+{
+	struct octeon_clk_priv *priv = dev_get_priv(dev);
+
+	/*
+	 * The clock values are already read into GD, lets just store them
+	 * in priv data
+	 */
+	priv->core_clk = gd->cpu_clk;
+	priv->io_clk = gd->bus_clk;
+
+	return 0;
+}
+
+U_BOOT_DRIVER(clk_octeon) = {
+	.name = "clk_octeon",
+	.id = UCLASS_CLK,
+	.of_match = octeon_clk_ids,
+	.ops = &octeon_clk_ops,
+	.probe = octeon_clk_probe,
+	.priv_auto_alloc_size = sizeof(struct octeon_clk_priv),
+};