ARM: uniphier: add PH1-LD20 SoC support
This is the first ARMv8 SoC from Socionext Inc.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/early-clk/early-clk-ld20.c b/arch/arm/mach-uniphier/early-clk/early-clk-ld20.c
new file mode 100644
index 0000000..37adb37
--- /dev/null
+++ b/arch/arm/mach-uniphier/early-clk/early-clk-ld20.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2016 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_ld20_early_clk_init(const struct uniphier_board_data *bd)
+{
+ u32 tmp;
+
+ /* deassert reset */
+ tmp = readl(SC_RSTCTRL7);
+ tmp |= SC_RSTCTRL7_UMCSB | SC_RSTCTRL7_UMCA2 | SC_RSTCTRL7_UMCA1 |
+ SC_RSTCTRL7_UMCA0 | SC_RSTCTRL7_UMC32 | SC_RSTCTRL7_UMC31 |
+ SC_RSTCTRL7_UMC30;
+ writel(tmp, SC_RSTCTRL7);
+
+ /* provide clocks */
+ tmp = readl(SC_CLKCTRL7);
+ tmp |= SC_CLKCTRL7_UMCSB | SC_CLKCTRL7_UMC32 | SC_CLKCTRL7_UMC31 |
+ SC_CLKCTRL7_UMC30;
+ writel(tmp, SC_CLKCTRL7);
+
+ return 0;
+}