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Diffstat (limited to 'arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c')
-rw-r--r--arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c b/arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c
new file mode 100644
index 0000000..007d3b8
--- /dev/null
+++ b/arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2015 Masahiro Yamada <yamada.m@jp.panasonic.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <linux/io.h>
+#include <mach/init.h>
+#include <mach/sc-regs.h>
+
+int ph1_pro5_early_clk_init(const struct uniphier_board_data *bd)
+{
+ u32 tmp;
+
+ /*
+ * deassert reset
+ * UMCA2: Ch1 (DDR3)
+ * UMCA1, UMC31: Ch0 (WIO1)
+ * UMCA0, UMC30: Ch0 (WIO0)
+ */
+ tmp = readl(SC_RSTCTRL4);
+ tmp |= SC_RSTCTRL4_NRST_UMCSB | SC_RSTCTRL4_NRST_UMCA2 |
+ SC_RSTCTRL4_NRST_UMCA1 | SC_RSTCTRL4_NRST_UMCA0 |
+ SC_RSTCTRL4_NRST_UMC31 | SC_RSTCTRL4_NRST_UMC30;
+ writel(tmp, SC_RSTCTRL4);
+ readl(SC_RSTCTRL); /* dummy read */
+
+ /* privide clocks */
+ tmp = readl(SC_CLKCTRL);
+ tmp |= SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI;
+ writel(tmp, SC_CLKCTRL);
+ tmp = readl(SC_CLKCTRL4);
+ tmp |= SC_CLKCTRL4_CEN_UMCSB | SC_CLKCTRL4_CEN_UMC1 |
+ SC_CLKCTRL4_CEN_UMC0;
+ writel(tmp, SC_CLKCTRL4);
+ readl(SC_CLKCTRL4); /* dummy read */
+
+ return 0;
+}