[PATCH 08/19] ARM: s5pv210: Add board file for boot using Device Tree

Tomasz Figa
2014-07-04T17:48:08Z

From: Mateusz Krawczuk <m.krawczuk@partner.samsung.com>

This patch adds board file that will be used to boot S5PV210/S5PC110-based
boards using Device Tree.

Signed-off-by: Mateusz Krawczuk <m.krawczuk@partner.samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[t.figa: Rebased and cleaned-up a bit.]
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
---
arch/arm/mach-s5pv210/Kconfig | 14 +++++++++
arch/arm/mach-s5pv210/Makefile | 2 +-
arch/arm/mach-s5pv210/s5pv210.c | 68 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 83 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/mach-s5pv210/s5pv210.c

diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index f60f286..ed492cf 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -194,6 +194,20 @@ config MACH_TORBRECK
help
Machine support for aESOP Torbreck

+config MACH_S5PV210_DT
+ bool "Samsung S5PV210/S5PC110 machine using Device Tree"
+ select CLKSRC_OF
+ select CPU_S5PV210
+ select PINCTRL
+ select PINCTRL_EXYNOS
+ select USE_OF
+ help
+ Machine support for Samsung S5PV210/S5PC110 machines with Device Tree
+ enabled.
+ Select this if a fdt blob is available for your S5PV210 SoC based
+ board.
+ Note: This is under development and not all peripherals can be
+ supported with this machine file.
endmenu

endif
diff --git a/arch/arm/mach-s5pv210/Makefile b/arch/arm/mach-s5pv210/Makefile
index 08358bb..8d87b10 100644
--- a/arch/arm/mach-s5pv210/Makefile
+++ b/arch/arm/mach-s5pv210/Makefile
@@ -24,7 +24,7 @@ obj-$(CONFIG_MACH_GONI) += mach-goni.o
obj-$(CONFIG_MACH_SMDKC110) += mach-smdkc110.o
obj-$(CONFIG_MACH_SMDKV210) += mach-smdkv210.o
obj-$(CONFIG_MACH_TORBRECK) += mach-torbreck.o
-
+obj-$(CONFIG_MACH_S5PV210_DT) += s5pv210.o
# device support

obj-y += dev-audio.o
diff --git a/arch/arm/mach-s5pv210/s5pv210.c b/arch/arm/mach-s5pv210/s5pv210.c
new file mode 100644
index 0000000..c244ccb
--- /dev/null
+++ b/arch/arm/mach-s5pv210/s5pv210.c
@@ -0,0 +1,68 @@
+/*
+ * Samsung's S5PC110/S5PV210 flattened device tree enabled machine.
+ *
+ * Copyright (c) 2013-2014 Samsung Electronics Co., Ltd.
+ * Mateusz Krawczuk <m.krawczuk@partner.samsung.com>
+ * Tomasz Figa <t.figa@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/system_misc.h>
+
+#include <plat/map-base.h>
+#include <mach/regs-clock.h>
+
+static int __init s5pv210_fdt_map_sys(unsigned long node, const char *uname,
+ int depth, void *data)
+{
+ struct map_desc iodesc;
+ const __be32 *reg;
+ int len;
+
+ if (!of_flat_dt_is_compatible(node, "samsung,s5pv210-clock"))
+ return 0;
+
+ reg = of_get_flat_dt_prop(node, "reg", &len);
+ if (reg == NULL || len != (sizeof(unsigned long) * 2))
+ return 0;
+
+ iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0]));
+ iodesc.length = be32_to_cpu(reg[1]) - 1;
+ iodesc.virtual = (unsigned long)S3C_VA_SYS;
+ iodesc.type = MT_DEVICE;
+ iotable_init(&iodesc, 1);
+
+ return 1;
+}
+
+static void __init s5pv210_dt_map_io(void)
+{
+ debug_ll_io_init();
+
+ of_scan_flat_dt(s5pv210_fdt_map_sys, NULL);
+}
+
+static void s5pv210_dt_restart(enum reboot_mode mode, const char *cmd)
+{
+ __raw_writel(0x1, S5P_SWRESET);
+}
+
+static char const *s5pv210_dt_compat[] __initconst = {
+ "samsung,s5pc110",
+ "samsung,s5pv210",
+ NULL
+};
+
+DT_MACHINE_START(S5PV210_DT, "Samsung S5PC110/S5PV210-based board")
+ .dt_compat = s5pv210_dt_compat,
+ .map_io = s5pv210_dt_map_io,
+ .restart = s5pv210_dt_restart,
+MACHINE_END
--
1.9.3