1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/clk/clk-dram-ld4.c b/arch/arm/mach-uniphier/clk/clk-dram-ld4.c
new file mode 100644
index 00000000000..407daf06642
--- /dev/null
+++ b/arch/arm/mach-uniphier/clk/clk-dram-ld4.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2011-2014 Panasonic Corporation
+ * Copyright (C) 2015-2017 Socionext Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <spl.h>
+#include <linux/io.h>
+
+#include "../init.h"
+#include "../sc-regs.h"
+
+void uniphier_ld4_dram_clk_init(void)
+{
+	u32 tmp;
+
+	/* deassert reset */
+	tmp = readl(SC_RSTCTRL);
+	tmp |= SC_RSTCTRL_NRST_UMC1 | SC_RSTCTRL_NRST_UMC0;
+	writel(tmp, SC_RSTCTRL);
+	readl(SC_RSTCTRL); /* dummy read */
+
+	/* provide clocks */
+	tmp = readl(SC_CLKCTRL);
+	tmp |= SC_CLKCTRL_CEN_UMC;
+	writel(tmp, SC_CLKCTRL);
+	readl(SC_CLKCTRL); /* dummy read */
+}