Commit f5c42271 authored by Roland Stigge's avatar Roland Stigge
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ARM: LPC32xx: Device tree support 



This patch does the actual device tree switch for the LPC32xx SoC.

Signed-off-by: default avatarRoland Stigge <stigge@antcom.de>
parent e04920d9

Documentation/devicetree/bindings/arm/lpc32xx-mic.txt

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* NXP LPC32xx Main Interrupt Controller

  (MIC, including SIC1 and SIC2 secondary controllers)



Required properties:

- compatible: Should be "nxp,lpc3220-mic"

- interrupt-controller: Identifies the node as an interrupt controller.

- interrupt-parent: Empty for the interrupt controller itself

- #interrupt-cells: The number of cells to define the interrupts. Should be 2.

  The first cell is the IRQ number

  The second cell is used to specify mode:

      1 = low-to-high edge triggered

      2 = high-to-low edge triggered

      4 = active high level-sensitive

      8 = active low level-sensitive

      Default for internal sources should be set to 4 (active high).

- reg: Should contain MIC registers location and length



Examples:

	/*

	 * MIC

	 */

	mic: interrupt-controller@40008000 {

		compatible = "nxp,lpc3220-mic";

		interrupt-controller;

		interrupt-parent;

		#interrupt-cells = <2>;

		reg = <0x40008000 0xC000>;

	};



	/*

	 * ADC

	 */

	adc@40048000 {

		compatible = "nxp,lpc3220-adc";

		reg = <0x40048000 0x1000>;

		interrupt-parent = <&mic>;

		interrupts = <39 4>;

	};

Documentation/devicetree/bindings/arm/lpc32xx.txt

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NXP LPC32xx Platforms Device Tree Bindings

------------------------------------------



Boards with the NXP LPC32xx SoC shall have the following properties:



Required root node property:



compatible: must be "nxp,lpc3220", "nxp,lpc3230", "nxp,lpc3240" or "nxp,lpc3250"

arch/arm/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -597,6 +597,7 @@ config ARCH_LPC32XX 
	select USB_ARCH_HAS_OHCI

	select CLKDEV_LOOKUP

	select GENERIC_CLOCKEVENTS

	select USE_OF

	help

	  Support for the NXP LPC32XX family of processors

arch/arm/mach-lpc32xx/common.c

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@@ -31,198 +31,6 @@ 
#include <mach/platform.h>

#include "common.h"



/*

 * Watchdog timer

 */

static struct resource watchdog_resources[] = {

	[0] = {

		.start = LPC32XX_WDTIM_BASE,

		.end = LPC32XX_WDTIM_BASE + SZ_4K - 1,

		.flags = IORESOURCE_MEM,

	},

};



struct platform_device lpc32xx_watchdog_device = {

	.name = "pnx4008-watchdog",

	.id = -1,

	.num_resources = ARRAY_SIZE(watchdog_resources),

	.resource = watchdog_resources,

};



/*

 * I2C busses

 */

static struct resource i2c0_resources[] = {

	[0] = {

		.start = LPC32XX_I2C1_BASE,

		.end = LPC32XX_I2C1_BASE + 0x100 - 1,

		.flags = IORESOURCE_MEM,

	},

	[1] = {

		.start = IRQ_LPC32XX_I2C_1,

		.end = IRQ_LPC32XX_I2C_1,

		.flags = IORESOURCE_IRQ,

	},

};



static struct resource i2c1_resources[] = {

	[0] = {

		.start = LPC32XX_I2C2_BASE,

		.end = LPC32XX_I2C2_BASE + 0x100 - 1,

		.flags = IORESOURCE_MEM,

	},

	[1] = {

		.start = IRQ_LPC32XX_I2C_2,

		.end = IRQ_LPC32XX_I2C_2,

		.flags = IORESOURCE_IRQ,

	},

};



static struct resource i2c2_resources[] = {

	[0] = {

		.start = LPC32XX_OTG_I2C_BASE,

		.end = LPC32XX_OTG_I2C_BASE + 0x100 - 1,

		.flags = IORESOURCE_MEM,

	},

	[1] = {

		.start = IRQ_LPC32XX_USB_I2C,

		.end = IRQ_LPC32XX_USB_I2C,

		.flags = IORESOURCE_IRQ,

	},

};



struct platform_device lpc32xx_i2c0_device = {

	.name = "pnx-i2c.0",

	.id = 0,

	.num_resources = ARRAY_SIZE(i2c0_resources),

	.resource = i2c0_resources,

};



struct platform_device lpc32xx_i2c1_device = {

	.name = "pnx-i2c.1",

	.id = 1,

	.num_resources = ARRAY_SIZE(i2c1_resources),

	.resource = i2c1_resources,

};



struct platform_device lpc32xx_i2c2_device = {

	.name = "pnx-i2c.2",

	.id = 2,

	.num_resources = ARRAY_SIZE(i2c2_resources),

	.resource = i2c2_resources,

};



/* TSC (Touch Screen Controller) */



static struct resource lpc32xx_tsc_resources[] = {

	{

		.start = LPC32XX_ADC_BASE,

		.end = LPC32XX_ADC_BASE + SZ_4K - 1,

		.flags = IORESOURCE_MEM,

	}, {

		.start = IRQ_LPC32XX_TS_IRQ,

		.end = IRQ_LPC32XX_TS_IRQ,

		.flags = IORESOURCE_IRQ,

	},

};



struct platform_device lpc32xx_tsc_device = {

	.name =  "ts-lpc32xx",

	.id = -1,

	.num_resources = ARRAY_SIZE(lpc32xx_tsc_resources),

	.resource = lpc32xx_tsc_resources,

};



/* RTC */



static struct resource lpc32xx_rtc_resources[] = {

	{

		.start = LPC32XX_RTC_BASE,

		.end = LPC32XX_RTC_BASE + SZ_4K - 1,

		.flags = IORESOURCE_MEM,

	},{

		.start = IRQ_LPC32XX_RTC,

		.end = IRQ_LPC32XX_RTC,

		.flags = IORESOURCE_IRQ,

	},

};



struct platform_device lpc32xx_rtc_device = {

	.name =  "rtc-lpc32xx",

	.id = -1,

	.num_resources = ARRAY_SIZE(lpc32xx_rtc_resources),

	.resource = lpc32xx_rtc_resources,

};



/*

 * ADC support

 */

static struct resource adc_resources[] = {

	{

		.start = LPC32XX_ADC_BASE,

		.end = LPC32XX_ADC_BASE + SZ_4K - 1,

		.flags = IORESOURCE_MEM,

	}, {

		.start = IRQ_LPC32XX_TS_IRQ,

		.end = IRQ_LPC32XX_TS_IRQ,

		.flags = IORESOURCE_IRQ,

	},

};



struct platform_device lpc32xx_adc_device = {

	.name =  "lpc32xx-adc",

	.id = -1,

	.num_resources = ARRAY_SIZE(adc_resources),

	.resource = adc_resources,

};



/*

 * USB support

 */

/* The dmamask must be set for OHCI to work */

static u64 ohci_dmamask = ~(u32) 0;

static struct resource ohci_resources[] = {

	{

		.start = IO_ADDRESS(LPC32XX_USB_BASE),

		.end = IO_ADDRESS(LPC32XX_USB_BASE + 0x100 - 1),

		.flags = IORESOURCE_MEM,

	}, {

		.start = IRQ_LPC32XX_USB_HOST,

		.flags = IORESOURCE_IRQ,

	},

};

struct platform_device lpc32xx_ohci_device = {

	.name = "usb-ohci",

	.id = -1,

	.dev = {

		.dma_mask = &ohci_dmamask,

		.coherent_dma_mask = 0xFFFFFFFF,

	},

	.num_resources = ARRAY_SIZE(ohci_resources),

	.resource = ohci_resources,

};



/*

 * Network Support

 */

static struct resource net_resources[] = {

	[0] = DEFINE_RES_MEM(LPC32XX_ETHERNET_BASE, SZ_4K),

	[1] = DEFINE_RES_MEM(LPC32XX_IRAM_BASE, SZ_128K),

	[2] = DEFINE_RES_IRQ(IRQ_LPC32XX_ETHERNET),

};



static u64 lpc32xx_mac_dma_mask = 0xffffffffUL;

struct platform_device lpc32xx_net_device = {

	.name = "lpc-eth",

	.id = 0,

	.dev = {

		.dma_mask = &lpc32xx_mac_dma_mask,

		.coherent_dma_mask = 0xffffffffUL,

	},

	.num_resources = ARRAY_SIZE(net_resources),

	.resource = net_resources,

};



/*

 * Returns the unique ID for the device

 */

arch/arm/mach-lpc32xx/common.h

+0 −14
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@@ -22,19 +22,6 @@ 
#include <mach/board.h>

#include <linux/platform_device.h>



/*

 * Arch specific platform device structures

 */

extern struct platform_device lpc32xx_watchdog_device;

extern struct platform_device lpc32xx_i2c0_device;

extern struct platform_device lpc32xx_i2c1_device;

extern struct platform_device lpc32xx_i2c2_device;

extern struct platform_device lpc32xx_tsc_device;

extern struct platform_device lpc32xx_adc_device;

extern struct platform_device lpc32xx_rtc_device;

extern struct platform_device lpc32xx_ohci_device;

extern struct platform_device lpc32xx_net_device;



/*

 * Other arch specific structures and functions

 */
@@ -42,7 +29,6 @@ extern struct sys_timer lpc32xx_timer; 
extern void __init lpc32xx_init_irq(void);

extern void __init lpc32xx_map_io(void);

extern void __init lpc32xx_serial_init(void);

extern void __init lpc32xx_gpio_init(void);

extern void lpc23xx_restart(char, const char *);