Messages in this thread Patch in this message | | | From | Roland Stigge <> | Subject | [PATCH v2] ARM: LPC32xx: Ethernet support | Date | Sat, 25 Feb 2012 21:24:25 +0100 |
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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>
--- arch/arm/mach-lpc32xx/Kconfig | 26 ++++++++++++++++++++++ arch/arm/mach-lpc32xx/common.c | 34 +++++++++++++++++++++++++++++ arch/arm/mach-lpc32xx/common.h | 4 +-- arch/arm/mach-lpc32xx/include/mach/board.h | 32 +++++++++++++++++++++++++++ arch/arm/mach-lpc32xx/irq.c | 4 +++ arch/arm/mach-lpc32xx/phy3250.c | 2 + 6 files changed, 100 insertions(+), 2 deletions(-)
--- linux-2.6.orig/arch/arm/mach-lpc32xx/Kconfig +++ linux-2.6/arch/arm/mach-lpc32xx/Kconfig @@ -29,5 +29,31 @@ config ARCH_LPC32XX_UART6_SELECT endmenu +menu "LPC32XX chip components" + +config ARCH_LPC32XX_IRAM_FOR_NET + bool "Use IRAM for network buffers" + default n + 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" + default n + 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 --- linux-2.6.orig/arch/arm/mach-lpc32xx/common.c +++ linux-2.6/arch/arm/mach-lpc32xx/common.c @@ -186,6 +186,40 @@ struct platform_device lpc32xx_ohci_devi }; /* + * Network Support + */ +static struct lpc_net_cfg lpc32xx_netdata = { + .phy_irq = -1, + .phy_mask = 0xFFFFFFF0, +}; + +static struct resource net_resources[] = { + [0] = { + .start = LPC32XX_ETHERNET_BASE, + .end = LPC32XX_ETHERNET_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_LPC32XX_ETHERNET, + .end = IRQ_LPC32XX_ETHERNET, + .flags = IORESOURCE_IRQ, + }, +}; + +static u64 lpc32xx_mac_dma_mask = 0xffffffffUL; +struct platform_device lpc32xx_net_device = { + .name = "lpc-net", + .id = 0, + .dev = { + .dma_mask = &lpc32xx_mac_dma_mask, + .coherent_dma_mask = 0xffffffffUL, + .platform_data = &lpc32xx_netdata, + }, + .num_resources = ARRAY_SIZE(net_resources), + .resource = net_resources, +}; + +/* * Returns the unique ID for the device */ void lpc32xx_get_uid(u32 devid[4]) --- linux-2.6.orig/arch/arm/mach-lpc32xx/common.h +++ linux-2.6/arch/arm/mach-lpc32xx/common.h @@ -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_ts 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 */ --- /dev/null +++ linux-2.6/arch/arm/mach-lpc32xx/include/mach/board.h @@ -0,0 +1,32 @@ +/* + * 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 + +/* + * Network configuration structure + */ +struct lpc_net_cfg { + int phy_irq; /* PHY IRQ number, or -1 for polling */ + u32 phy_mask; /* PHY mask value */ +}; + +extern u32 lpc32xx_return_iram_size(void); + +#endif /* __ASM_ARCH_BOARD_H */ --- linux-2.6.orig/arch/arm/mach-lpc32xx/irq.c +++ linux-2.6/arch/arm/mach-lpc32xx/irq.c @@ -150,6 +150,10 @@ static const struct lpc32xx_event_info l .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, --- linux-2.6.orig/arch/arm/mach-lpc32xx/phy3250.c +++ linux-2.6/arch/arm/mach-lpc32xx/phy3250.c @@ -37,6 +37,7 @@ #include <mach/hardware.h> #include <mach/platform.h> +#include <mach/board.h> #include <mach/gpio-lpc32xx.h> #include "common.h" @@ -278,6 +279,7 @@ static struct platform_device *phy3250_d &lpc32xx_gpio_led_device, &lpc32xx_adc_device, &lpc32xx_ohci_device, + &lpc32xx_net_device, }; static struct amba_device *amba_devs[] __initdata = {
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