Commit 1bffb4a8 authored by Thomas Petazzoni's avatar Thomas Petazzoni Committed by Jason Cooper
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arm: orion5x: basic Device Tree support 



This commit adds basic DT support for the Orion5x SoC family. It adds
an orion5x.dtsi description of the Orion5x SoC as well as the needed
DT_MACHINE structure to support boards converted to DT in the future.

So far, the Device Tree contains the interrupt controller, the GPIO
bank, the UART controllers, the SPI controller, the watchdog, the SATA
controller, the I2C controller and the cryptographic engine.

Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested by: Maxime Hadjinlian <mhadjinlian@lacie.com>
Acked-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent 99739786

arch/arm/boot/dts/orion5x.dtsi

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+98 −0
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/*

 * Copyright (C) 2012 Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

 *

 * This file is licensed under the terms of the GNU General Public

 * License version 2. This program is licensed "as is" without any

 * warranty of any kind, whether express or implied.

 */



/include/ "skeleton.dtsi"



/ {

	model = "Marvell Orion5x SoC";

	compatible = "marvell,orion5x";

	interrupt-parent = <&intc>;



	intc: interrupt-controller {

		compatible = "marvell,orion-intc", "marvell,intc";

		interrupt-controller;

		#interrupt-cells = <1>;

		reg = <0xf1020204 0x04>;

	};



	ocp@f1000000 {

		compatible = "simple-bus";

		ranges = <0x00000000 0xf1000000 0x4000000

		          0xf2200000 0xf2200000 0x0000800>;

		#address-cells = <1>;

		#size-cells = <1>;



		gpio0: gpio@10100 {

			compatible = "marvell,orion-gpio";

			#gpio-cells = <2>;

			gpio-controller;

			reg = <0x10100 0x40>;

			ngpio = <32>;

			interrupts = <6>, <7>, <8>, <9>;

		};



		serial@12000 {

			compatible = "ns16550a";

			reg = <0x12000 0x100>;

			reg-shift = <2>;

			interrupts = <3>;

			/* set clock-frequency in board dts */

			status = "disabled";

		};



		serial@12100 {

			compatible = "ns16550a";

			reg = <0x12100 0x100>;

			reg-shift = <2>;

			interrupts = <4>;

			/* set clock-frequency in board dts */

			status = "disabled";

		};



		spi@10600 {

			compatible = "marvell,orion-spi";

			#address-cells = <1>;

			#size-cells = <0>;

			cell-index = <0>;

			reg = <0x10600 0x28>;

			status = "disabled";

		};



		wdt@20300 {

			compatible = "marvell,orion-wdt";

			reg = <0x20300 0x28>;

			status = "okay";

		};



		sata@80000 {

			compatible = "marvell,orion-sata";

			reg = <0x80000 0x5000>;

			interrupts = <29>;

			status = "disabled";

		};



		i2c@11000 {

			compatible = "marvell,mv64xxx-i2c";

			reg = <0x11000 0x20>;

			#address-cells = <1>;

			#size-cells = <0>;

			interrupts = <5>;

			clock-frequency = <100000>;

			status = "disabled";

		};



		crypto@90000 {

			compatible = "marvell,orion-crypto";

			reg = <0x90000 0x10000>,

			      <0xf2200000 0x800>;

			reg-names = "regs", "sram";

			interrupts = <22>;

			status = "okay";

		};

	};

};

arch/arm/mach-orion5x/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -2,6 +2,13 @@ if ARCH_ORION5X 


menu "Orion Implementations"



config ARCH_ORION5X_DT

	bool "Marvell Orion5x Flattened Device Tree"

	select USE_OF

	help

	  Say 'Y' here if you want your kernel to support the

	  Marvell Orion5x using flattened device tree.



config MACH_DB88F5281

	bool "Marvell Orion-2 Development Board"

	select I2C_BOARDINFO

arch/arm/mach-orion5x/Makefile

+2 −0
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@@ -22,3 +22,5 @@ obj-$(CONFIG_MACH_RD88F5181L_GE) += rd88f5181l-ge-setup.o 
obj-$(CONFIG_MACH_RD88F5181L_FXO)	+= rd88f5181l-fxo-setup.o

obj-$(CONFIG_MACH_RD88F6183AP_GE)	+= rd88f6183ap-ge-setup.o

obj-$(CONFIG_MACH_LINKSTATION_LSCHL)	+= ls-chl-setup.o



obj-$(CONFIG_ARCH_ORION5X_DT)		+= board-dt.o

arch/arm/mach-orion5x/board-dt.c

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+76 −0
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/*

 * Copyright 2012 (C), Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

 *

 * arch/arm/mach-orion5x/board-dt.c

 *

 * Flattened Device Tree board initialization

 *

 * This file is licensed under the terms of the GNU General Public

 * License version 2.  This program is licensed "as is" without any

 * warranty of any kind, whether express or implied.

 */



#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/of.h>

#include <linux/of_platform.h>

#include <asm/system_misc.h>

#include <asm/mach/arch.h>

#include <mach/orion5x.h>

#include <plat/irq.h>

#include "common.h"



struct of_dev_auxdata orion5x_auxdata_lookup[] __initdata = {

	OF_DEV_AUXDATA("marvell,orion-spi", 0xf1010600, "orion_spi.0", NULL),

	OF_DEV_AUXDATA("marvell,mv64xxx-i2c", 0xf1011000, "mv64xxx_i2c.0",

		       NULL),

	OF_DEV_AUXDATA("marvell,orion-wdt", 0xf1020300, "orion_wdt", NULL),

	OF_DEV_AUXDATA("marvell,orion-sata", 0xf1080000, "sata_mv.0", NULL),

	OF_DEV_AUXDATA("marvell,orion-crypto", 0xf1090000, "mv_crypto", NULL),

	{},

};



static void __init orion5x_dt_init(void)

{

	char *dev_name;

	u32 dev, rev;



	orion5x_id(&dev, &rev, &dev_name);

	printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);



	/*

	 * Setup Orion address map

	 */

	orion5x_setup_cpu_mbus_bridge();



	/* Setup root of clk tree */

	clk_init();



	/*

	 * Don't issue "Wait for Interrupt" instruction if we are

	 * running on D0 5281 silicon.

	 */

	if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {

		printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");

		disable_hlt();

	}



	of_platform_populate(NULL, of_default_bus_match_table,

			     orion5x_auxdata_lookup, NULL);

}



static const char *orion5x_dt_compat[] = {

	"marvell,orion5x",

	NULL,

};



DT_MACHINE_START(ORION5X_DT, "Marvell Orion5x (Flattened Device Tree)")

	/* Maintainer: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> */

	.map_io		= orion5x_map_io,

	.init_early	= orion5x_init_early,

	.init_irq	= orion_dt_init_irq,

	.timer		= &orion5x_timer,

	.init_machine	= orion5x_dt_init,

	.restart	= orion5x_restart,

	.dt_compat	= orion5x_dt_compat,

MACHINE_END

arch/arm/mach-orion5x/common.c

+2 −2
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@@ -65,7 +65,7 @@ void __init orion5x_map_io(void) 
 ****************************************************************************/

static struct clk *tclk;



static void __init clk_init(void)

void __init clk_init(void)

{

	tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,

				       orion5x_tclk);
@@ -236,7 +236,7 @@ struct sys_timer orion5x_timer = { 
/*

 * Identify device ID and rev from PCIe configuration header space '0'.

 */

static void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)

void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)

{

	orion5x_pcie_id(dev, rev);

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