[PATCH 02/36] MIPS: jz4740: require & include DT

[Paul Burton <paul.burton@xxxxxxxxxx>]

Require a DT for jz4740 based systems, and add a stub one for the
qi_lb60 (Ben NanoNote) board. Devices will be migrated to being probed
via this DT over time.

Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
Cc: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
 arch/mips/Kconfig              |  2 ++
 arch/mips/boot/dts/Makefile    |  1 +
 arch/mips/boot/dts/jz4740.dtsi |  5 +++++
 arch/mips/boot/dts/qi_lb60.dts |  7 +++++++
 arch/mips/jz4740/setup.c       | 19 +++++++++++++++++++
 5 files changed, 34 insertions(+)
 create mode 100644 arch/mips/boot/dts/jz4740.dtsi
 create mode 100644 arch/mips/boot/dts/qi_lb60.dts

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 3289969..99d50cd 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -288,6 +288,8 @@ config MACH_JZ4740
 	select SYS_HAS_EARLY_PRINTK
 	select HAVE_CLK
 	select GENERIC_IRQ_CHIP
+	select BUILTIN_DTB
+	select USE_OF
 
 config LANTIQ
 	bool "Lantiq based platforms"
diff --git a/arch/mips/boot/dts/Makefile b/arch/mips/boot/dts/Makefile
index 4f49fa4..a1127f3 100644
--- a/arch/mips/boot/dts/Makefile
+++ b/arch/mips/boot/dts/Makefile
@@ -9,6 +9,7 @@ dtb-$(CONFIG_DTB_RT2880_EVAL)		+= rt2880_eval.dtb
 dtb-$(CONFIG_DTB_RT305X_EVAL)		+= rt3052_eval.dtb
 dtb-$(CONFIG_DTB_RT3883_EVAL)		+= rt3883_eval.dtb
 dtb-$(CONFIG_DTB_MT7620A_EVAL)		+= mt7620a_eval.dtb
+dtb-$(CONFIG_JZ4740_QI_LB60)		+= qi_lb60.dtb
 dtb-$(CONFIG_MIPS_SEAD3)		+= sead3.dtb
 
 obj-y		+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
diff --git a/arch/mips/boot/dts/jz4740.dtsi b/arch/mips/boot/dts/jz4740.dtsi
new file mode 100644
index 0000000..c538691f
--- /dev/null
+++ b/arch/mips/boot/dts/jz4740.dtsi
@@ -0,0 +1,5 @@
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	compatible = "ingenic,jz4740";
+};
diff --git a/arch/mips/boot/dts/qi_lb60.dts b/arch/mips/boot/dts/qi_lb60.dts
new file mode 100644
index 0000000..0c0f639
--- /dev/null
+++ b/arch/mips/boot/dts/qi_lb60.dts
@@ -0,0 +1,7 @@
+/dts-v1/;
+
+#include "jz4740.dtsi"
+
+/ {
+	compatible = "qi,lb60", "ingenic,jz4740";
+};
diff --git a/arch/mips/jz4740/setup.c b/arch/mips/jz4740/setup.c
index ef796f9..d6bb7a3 100644
--- a/arch/mips/jz4740/setup.c
+++ b/arch/mips/jz4740/setup.c
@@ -17,8 +17,11 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
 
 #include <asm/bootinfo.h>
+#include <asm/prom.h>
 
 #include <asm/mach-jz4740/base.h>
 
@@ -53,8 +56,24 @@ void __init plat_mem_setup(void)
 {
 	jz4740_reset_init();
 	jz4740_detect_mem();
+	__dt_setup_arch(__dtb_start);
 }
 
+void __init device_tree_init(void)
+{
+	if (!initial_boot_params)
+		return;
+
+	unflatten_and_copy_device_tree();
+}
+
+static int __init populate_machine(void)
+{
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+	return 0;
+}
+arch_initcall(populate_machine);
+
 const char *get_system_type(void)
 {
 	return "JZ4740";
-- 
2.2.1