rockchip: rk3066: add core support

Add the core architecture code for the rk3066.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/rk3066/clk_rk3066.c b/arch/arm/mach-rockchip/rk3066/clk_rk3066.c
new file mode 100644
index 0000000..c47526d
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3066/clk_rk3066.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <syscon.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk3066.h>
+#include <linux/err.h>
+
+int rockchip_get_clk(struct udevice **devp)
+{
+	return uclass_get_device_by_driver(UCLASS_CLK,
+			DM_DRIVER_GET(rockchip_rk3066a_cru), devp);
+}
+
+void *rockchip_get_cru(void)
+{
+	struct rk3066_clk_priv *priv;
+	struct udevice *dev;
+	int ret;
+
+	ret = rockchip_get_clk(&dev);
+	if (ret)
+		return ERR_PTR(ret);
+
+	priv = dev_get_priv(dev);
+
+	return priv->cru;
+}