1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/clk/at91/clk-utmi.c b/drivers/clk/at91/clk-utmi.c
new file mode 100644
index 0000000..369a687
--- /dev/null
+++ b/drivers/clk/at91/clk-utmi.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2016 Atmel Corporation
+ *               Wenyou.Yang <wenyou.yang@atmel.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm/device.h>
+#include <linux/io.h>
+#include <mach/at91_pmc.h>
+#include "pmc.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UTMI_FIXED_MUL		40
+
+static int utmi_clk_enable(struct clk *clk)
+{
+	struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+	struct at91_pmc *pmc = plat->reg_base;
+	u32 tmp;
+
+	if (readl(&pmc->sr) & AT91_PMC_LOCKU)
+		return 0;
+
+	tmp = readl(&pmc->uckr);
+	tmp |= AT91_PMC_UPLLEN |
+	       AT91_PMC_UPLLCOUNT |
+	       AT91_PMC_BIASEN;
+	writel(tmp, &pmc->uckr);
+
+	while (!(readl(&pmc->sr) & AT91_PMC_LOCKU))
+		;
+
+	return 0;
+}
+
+static ulong utmi_clk_get_rate(struct clk *clk)
+{
+	return gd->arch.main_clk_rate_hz * UTMI_FIXED_MUL;
+}
+
+static struct clk_ops utmi_clk_ops = {
+	.enable = utmi_clk_enable,
+	.get_rate = utmi_clk_get_rate,
+};
+
+static int utmi_clk_probe(struct udevice *dev)
+{
+	return at91_pmc_core_probe(dev);
+}
+
+static const struct udevice_id utmi_clk_match[] = {
+	{ .compatible = "atmel,at91sam9x5-clk-utmi" },
+	{}
+};
+
+U_BOOT_DRIVER(at91sam9x5_utmi_clk) = {
+	.name = "at91sam9x5-utmi-clk",
+	.id = UCLASS_CLK,
+	.of_match = utmi_clk_match,
+	.probe = utmi_clk_probe,
+	.platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+	.ops = &utmi_clk_ops,
+};