1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c
new file mode 100644
index 0000000000..fbb7b24d5e
--- /dev/null
+++ b/drivers/clk/imx/clk-pllv3.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 DENX Software Engineering
+ * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <malloc.h>
+#include <clk-uclass.h>
+#include <dm/device.h>
+#include <dm/uclass.h>
+#include <clk.h>
+#include "clk.h"
+
+#define UBOOT_DM_CLK_IMX_PLLV3 "imx_clk_pllv3"
+
+struct clk_pllv3 {
+	struct clk	clk;
+	void __iomem	*base;
+	u32		div_mask;
+	u32		div_shift;
+};
+
+#define to_clk_pllv3(_clk) container_of(_clk, struct clk_pllv3, clk)
+
+static ulong clk_pllv3_get_rate(struct clk *clk)
+{
+	struct clk_pllv3 *pll = to_clk_pllv3(dev_get_clk_ptr(clk->dev));
+	unsigned long parent_rate = clk_get_parent_rate(clk);
+
+	u32 div = (readl(pll->base) >> pll->div_shift) & pll->div_mask;
+
+	return (div == 1) ? parent_rate * 22 : parent_rate * 20;
+}
+
+static const struct clk_ops clk_pllv3_generic_ops = {
+	.get_rate       = clk_pllv3_get_rate,
+};
+
+struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
+			  const char *parent_name, void __iomem *base,
+			  u32 div_mask)
+{
+	struct clk_pllv3 *pll;
+	struct clk *clk;
+	char *drv_name;
+	int ret;
+
+	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+	if (!pll)
+		return ERR_PTR(-ENOMEM);
+
+	switch (type) {
+	case IMX_PLLV3_GENERIC:
+	case IMX_PLLV3_USB:
+		drv_name = UBOOT_DM_CLK_IMX_PLLV3;
+		break;
+	default:
+		kfree(pll);
+		return ERR_PTR(-ENOTSUPP);
+	}
+
+	pll->base = base;
+	pll->div_mask = div_mask;
+	clk = &pll->clk;
+
+	ret = clk_register(clk, drv_name, name, parent_name);
+	if (ret) {
+		kfree(pll);
+		return ERR_PTR(ret);
+	}
+
+	return clk;
+}
+
+U_BOOT_DRIVER(clk_pllv3_generic) = {
+	.name	= UBOOT_DM_CLK_IMX_PLLV3,
+	.id	= UCLASS_CLK,
+	.ops	= &clk_pllv3_generic_ops,
+	.flags = DM_FLAG_PRE_RELOC,
+};