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Diffstat (limited to 'arch/arm/mach-uniphier/clk/early-clk-ld11.c')
-rw-r--r--arch/arm/mach-uniphier/clk/early-clk-ld11.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/clk/early-clk-ld11.c b/arch/arm/mach-uniphier/clk/early-clk-ld11.c
new file mode 100644
index 00000000000..c94d83c4ed5
--- /dev/null
+++ b/arch/arm/mach-uniphier/clk/early-clk-ld11.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2016 Socionext Inc.
+ * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <linux/io.h>
+
+#include "../init.h"
+#include "../sc64-regs.h"
+
+int uniphier_ld11_early_clk_init(const struct uniphier_board_data *bd)
+{
+ u32 tmp;
+
+ /* deassert reset */
+ tmp = readl(SC_RSTCTRL7);
+ tmp |= SC_RSTCTRL7_UMC31 | SC_RSTCTRL7_UMC30;
+ writel(tmp, SC_RSTCTRL7);
+
+ /* provide clocks */
+ tmp = readl(SC_CLKCTRL4);
+ tmp |= SC_CLKCTRL4_PERI;
+ writel(tmp, SC_CLKCTRL4);
+
+ tmp = readl(SC_CLKCTRL7);
+ tmp |= SC_CLKCTRL7_UMC31 | SC_CLKCTRL7_UMC30;
+ writel(tmp, SC_CLKCTRL7);
+
+ return 0;
+}