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Commit e8823d26 authored by Paul Burton's avatar Paul Burton Committed by Ralf Baechle
Browse files

MIPS: Malta: Basic DT plumbing 



Build a DT for the Malta platform into the kernel, load it & probe
devices from it. The DT is essentially empty at this point, devices
will be added in further patches.

[ralf@linux-mips.org: Fixed conflicts.]

Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-kernel@vger.kernel.org
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/10119/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 56d4c99b

arch/mips/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -404,6 +404,7 @@ config MIPS_MALTA 
	select ARCH_MAY_HAVE_PC_FDC

	select BOOT_ELF32

	select BOOT_RAW

	select BUILTIN_DTB

	select CEVT_R4K

	select CSRC_R4K

	select CLKSRC_MIPS_GIC
@@ -443,6 +444,7 @@ config MIPS_MALTA 
	select SYS_SUPPORTS_MULTITHREADING

	select SYS_SUPPORTS_SMARTMIPS

	select SYS_SUPPORTS_ZBOOT

	select USE_OF

	select ZONE_DMA32 if 64BIT

	help

	  This enables support for the MIPS Technologies Malta evaluation

arch/mips/boot/dts/mti/Makefile

+1 −0
Original line number Diff line number Diff line 
dtb-$(CONFIG_MIPS_MALTA)	+= malta.dtb

dtb-$(CONFIG_MIPS_SEAD3)	+= sead3.dtb



obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))

arch/mips/boot/dts/mti/malta.dts

0 → 100644
+7 −0
Original line number Diff line number Diff line 
/dts-v1/;



/ {

	#address-cells = <1>;

	#size-cells = <1>;

	compatible = "mti,malta";

};

arch/mips/mti-malta/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -5,7 +5,7 @@ 
# Copyright (C) 2008 Wind River Systems, Inc.

#   written by Ralf Baechle <ralf@linux-mips.org>

#

obj-y				:= malta-display.o malta-init.o \

obj-y				:= malta-display.o malta-dt.o malta-init.o \

				   malta-int.o malta-memory.o malta-platform.o \

				   malta-reset.o malta-setup.o malta-time.o

arch/mips/mti-malta/malta-dt.c

0 → 100644
+34 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2015 Imagination Technologies

 * Author: Paul Burton <paul.burton@imgtec.com>

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the

 * Free Software Foundation; either version 2 of the License, or (at your

 * option) any later version.

 */



#include <linux/clk-provider.h>

#include <linux/init.h>

#include <linux/of_fdt.h>

#include <linux/of_platform.h>



void __init device_tree_init(void)

{

	unflatten_and_copy_device_tree();

}



static const struct of_device_id bus_ids[] __initconst = {

	{ .compatible = "simple-bus", },

	{ .compatible = "isa", },

	{},

};



static int __init publish_devices(void)

{

	if (!of_have_populated_dt())

		return 0;



	return of_platform_bus_probe(NULL, bus_ids, NULL);

}

device_initcall(publish_devices);