rockchip: rk3188: init CPU freq in clock driver

Init CPU frquency in clock driver instead of in SPL board file,
this will help for use common board file later.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/rk3188-board-spl.c b/arch/arm/mach-rockchip/rk3188-board-spl.c
index c3efe0d..017bc6e 100644
--- a/arch/arm/mach-rockchip/rk3188-board-spl.c
+++ b/arch/arm/mach-rockchip/rk3188-board-spl.c
@@ -70,27 +70,6 @@
 	return BOOT_DEVICE_MMC1;
 }
 
-static int setup_arm_clock(void)
-{
-	struct udevice *dev;
-	struct clk clk;
-	int ret;
-
-	ret = rockchip_get_clk(&dev);
-	if (ret)
-		return ret;
-
-	clk.id = CLK_ARM;
-	ret = clk_request(dev, &clk);
-	if (ret < 0)
-		return ret;
-
-	ret = clk_set_rate(&clk, 600000000);
-
-	clk_free(&clk);
-	return ret;
-}
-
 void board_init_f(ulong dummy)
 {
 	struct udevice *dev;
@@ -146,7 +125,6 @@
 		return;
 	}
 
-	setup_arm_clock();
 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
 	back_to_bootrom(BROM_BOOT_NEXTSTAGE);
 #endif
diff --git a/drivers/clk/rockchip/clk_rk3188.c b/drivers/clk/rockchip/clk_rk3188.c
index 9bb9959..dda686c 100644
--- a/drivers/clk/rockchip/clk_rk3188.c
+++ b/drivers/clk/rockchip/clk_rk3188.c
@@ -562,6 +562,9 @@
 #endif
 
 	rkclk_init(priv->cru, priv->grf, priv->has_bwadj);
+
+	/* Init CPU frequency */
+	rkclk_configure_cpu(priv->cru, priv->grf, APLL_HZ, priv->has_bwadj);
 #endif
 
 	return 0;