ARM: uniphier: add PLL init code for LD11 SoC
- Initialize PLLs (SPL initializes only DPLL to save the precious
SPL memory footprint)
- Adjust CPLL/MPLL to the final tape-out frequency
- Set the Cortex-A53 clock to the maximum frequency since it is
running at 500MHz (SPLL/4) on startup
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/clk/pll-ld11.c b/arch/arm/mach-uniphier/clk/pll-ld11.c
new file mode 100644
index 0000000..8a4a748
--- /dev/null
+++ b/arch/arm/mach-uniphier/clk/pll-ld11.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2016 Socionext Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/io.h>
+
+#include "../init.h"
+#include "../sc64-regs.h"
+#include "pll.h"
+
+void uniphier_ld11_pll_init(void)
+{
+ uniphier_ld20_sscpll_init(SC_CPLLCTRL, 1960, 1, 2); /* 2000MHz -> 1960MHz */
+ /* do nothing for SPLL */
+ uniphier_ld20_sscpll_init(SC_MPLLCTRL, 1600, 1, 2); /* 1500MHz -> 1600MHz */
+ uniphier_ld20_sscpll_init(SC_VSPLLCTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 2);
+
+ mdelay(1);
+
+ uniphier_ld20_sscpll_ssc_en(SC_CPLLCTRL);
+ uniphier_ld20_sscpll_ssc_en(SC_MPLLCTRL);
+ uniphier_ld20_sscpll_ssc_en(SC_VSPLLCTRL);
+
+ uniphier_ld20_vpll27_init(SC_VPLL27FCTRL);
+ uniphier_ld20_vpll27_init(SC_VPLL27ACTRL);
+
+ writel(0, SC_CA53_GEARSET); /* Gear0: CPLL/2 */
+ writel(SC_CA_GEARUPD, SC_CA53_GEARUPD);
+}