ARM: uniphier: add PLL init code for LD20 SoC

Initialize the DPLL (PLL for DRAM) in SPL, and others in U-Boot
proper.  Split the common code into pll-base-ld20.c for easier
re-use.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/arch/arm/mach-uniphier/clk/dpll-ld20.c b/arch/arm/mach-uniphier/clk/dpll-ld20.c
new file mode 100644
index 0000000..1132313
--- /dev/null
+++ b/arch/arm/mach-uniphier/clk/dpll-ld20.c
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2016 Socionext Inc.
+ *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include "../init.h"
+#include "../sc64-regs.h"
+#include "pll.h"
+
+int uniphier_ld20_dpll_init(const struct uniphier_board_data *bd)
+{
+	unsigned int dpll_ssc_rate = UNIPHIER_BD_DPLL_SSC_GET_RATE(bd->flags);
+	unsigned int dram_freq = bd->dram_freq;
+
+	uniphier_ld20_sscpll_init(SC_DPLL0CTRL, dram_freq, dpll_ssc_rate, 2);
+	uniphier_ld20_sscpll_init(SC_DPLL1CTRL, dram_freq, dpll_ssc_rate, 2);
+	uniphier_ld20_sscpll_init(SC_DPLL2CTRL, dram_freq, dpll_ssc_rate, 2);
+
+	return 0;
+}