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ARM: LPC32xx: Ethernet support

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This patch adds ethernet support to the LPC32xx ARM architecture. The actual
driver in drivers/net is contained in a separate patch.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Roland Stigge 2012-03-12 22:27:28 +01:00
parent 48a5dedfa7
commit c20b909be9
7 changed files with 79 additions and 3 deletions
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25
arch/arm/mach-lpc32xx/Kconfig
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@ -29,5 +29,30 @@ config ARCH_LPC32XX_UART6_SELECT
endmenu
menu "LPC32XX chip components"
config ARCH_LPC32XX_IRAM_FOR_NET
bool "Use IRAM for network buffers"
default y
help
Say Y here to use the LPC internal fast IRAM (i.e. 256KB SRAM) as
network buffer. If the total combined required buffer sizes is
larger than the size of IRAM, then SDRAM will be used instead.
This can be enabled safely if the IRAM is not intended for other
uses.
config ARCH_LPC32XX_MII_SUPPORT
bool "Check to enable MII support or leave disabled for RMII support"
help
Say Y here to enable MII support, or N for RMII support. Regardless of
which support is selected, the ethernet interface driver needs to be
selected in the device driver networking section.
The PHY3250 reference board uses RMII, so users of this board should
say N.
endmenu
endif

2
arch/arm/mach-lpc32xx/clock.c
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@ -1134,7 +1134,7 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("lpc32xx-adc", NULL, clk_adc)
_REGISTER_CLOCK("ts-lpc32xx", NULL, clk_tsc)
_REGISTER_CLOCK("dev:mmc0", NULL, clk_mmc)
_REGISTER_CLOCK("lpc-net.0", NULL, clk_net)
_REGISTER_CLOCK("lpc-eth.0", NULL, clk_net)
_REGISTER_CLOCK("dev:clcd", NULL, clk_lcd)
_REGISTER_CLOCK("lpc32xx_udc", "ck_usbd", clk_usbd)
_REGISTER_CLOCK("lpc32xx_rtc", NULL, clk_rtc)

21
arch/arm/mach-lpc32xx/common.c
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@ -185,6 +185,27 @@ struct platform_device lpc32xx_ohci_device = {
.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
*/

4
arch/arm/mach-lpc32xx/common.h
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@ -19,6 +19,7 @@
#ifndef __LPC32XX_COMMON_H
#define __LPC32XX_COMMON_H
#include <mach/board.h>
#include <linux/platform_device.h>
/*
@ -32,6 +33,7 @@ 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
@ -67,8 +69,6 @@ extern u32 clk_get_pclk_div(void);
*/
extern void lpc32xx_get_uid(u32 devid[4]);
extern u32 lpc32xx_return_iram_size(void);
/*
* Pointers used for sizing and copying suspend function data
*/

24
arch/arm/mach-lpc32xx/include/mach/board.h Normal file
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@ -0,0 +1,24 @@
/*
* arm/arch/mach-lpc32xx/include/mach/board.h
*
* Author: Kevin Wells <kevin.wells@nxp.com>
*
* Copyright (C) 2010 NXP Semiconductors
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __ASM_ARCH_BOARD_H
#define __ASM_ARCH_BOARD_H
extern u32 lpc32xx_return_iram_size(void);
#endif /* __ASM_ARCH_BOARD_H */

4
arch/arm/mach-lpc32xx/irq.c
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@ -146,6 +146,10 @@ static const struct lpc32xx_event_info lpc32xx_events[NR_IRQS] = {
.event_group = &lpc32xx_event_int_regs,
.mask = LPC32XX_CLKPWR_INTSRC_KEY_BIT,
},
[IRQ_LPC32XX_ETHERNET] = {
.event_group = &lpc32xx_event_int_regs,
.mask = LPC32XX_CLKPWR_INTSRC_MAC_BIT,
},
[IRQ_LPC32XX_USB_OTG_ATX] = {
.event_group = &lpc32xx_event_int_regs,
.mask = LPC32XX_CLKPWR_INTSRC_USBATXINT_BIT,

2
arch/arm/mach-lpc32xx/phy3250.c
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@ -37,6 +37,7 @@
#include <mach/hardware.h>
#include <mach/platform.h>
#include <mach/board.h>
#include <mach/gpio-lpc32xx.h>
#include "common.h"
@ -280,6 +281,7 @@ static struct platform_device *phy3250_devs[] __initdata = {
&lpc32xx_gpio_led_device,
&lpc32xx_adc_device,
&lpc32xx_ohci_device,
&lpc32xx_net_device,
};
static struct amba_device *amba_devs[] __initdata = {