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authorMasahiro Yamada <yamada.masahiro@socionext.com>2015-09-22 00:27:40 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2015-09-25 00:59:28 +0900
commit28f40d4a4db2b6c701d349fd4fac286d21369de2 (patch)
tree5e5e2fdf2be0c3226ac782c857eb4e3edefbbf54 /arch/arm/mach-uniphier/early-clk
parent323d1f9d5bebfe55e97e23c8094055685665afef (diff)
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ARM: uniphier: add PH1-Pro5 support
The DDR SDRAM initialization code has not been mainlined yet, but U-Boot proper should work. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'arch/arm/mach-uniphier/early-clk')
-rw-r--r--arch/arm/mach-uniphier/early-clk/Makefile1
-rw-r--r--arch/arm/mach-uniphier/early-clk/early-clk-ph1-pro5.c39
2 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/early-clk/Makefile b/arch/arm/mach-uniphier/early-clk/Makefile
index 58af1ad..939795c 100644
--- a/arch/arm/mach-uniphier/early-clk/Makefile
+++ b/arch/arm/mach-uniphier/early-clk/Makefile
@@ -2,3 +2,4 @@ obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD3) += early-clk-ph1-ld4.o
obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD4) += early-clk-ph1-ld4.o
obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO4) += early-clk-ph1-ld4.o
obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD8) += early-clk-ph1-ld4.o
+obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO5) += early-clk-ph1-pro5.o
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;
+}