mirror of https://gitee.com/openkylin/linux.git
303 lines
7.0 KiB
C
303 lines
7.0 KiB
C
/*
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* Copyright 2007 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
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* Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <linux/platform_device.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mtd/plat-ram.h>
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#include <linux/io.h>
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#include <linux/i2c.h>
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#include <linux/i2c/at24.h>
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#include <asm/mach/arch.h>
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#include <asm/mach-types.h>
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#include <mach/common.h>
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#include <mach/hardware.h>
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#include <mach/iomux.h>
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#ifdef CONFIG_I2C_IMX
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#include <mach/i2c.h>
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#endif
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#include <asm/mach/time.h>
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#include <mach/imx-uart.h>
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#include <mach/board-pcm038.h>
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#include <mach/mxc_nand.h>
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#include "devices.h"
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/*
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* Phytec's PCM038 comes with 2MiB battery buffered SRAM,
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* 16 bit width
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*/
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static struct platdata_mtd_ram pcm038_sram_data = {
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.bankwidth = 2,
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};
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static struct resource pcm038_sram_resource = {
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.start = CS1_BASE_ADDR,
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.end = CS1_BASE_ADDR + 512 * 1024 - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device pcm038_sram_mtd_device = {
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.name = "mtd-ram",
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.id = 0,
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.dev = {
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.platform_data = &pcm038_sram_data,
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},
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.num_resources = 1,
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.resource = &pcm038_sram_resource,
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};
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/*
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* Phytec's phyCORE-i.MX27 comes with 32MiB flash,
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* 16 bit width
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*/
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static struct physmap_flash_data pcm038_flash_data = {
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.width = 2,
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};
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static struct resource pcm038_flash_resource = {
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.start = 0xc0000000,
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.end = 0xc1ffffff,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device pcm038_nor_mtd_device = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &pcm038_flash_data,
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},
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.num_resources = 1,
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.resource = &pcm038_flash_resource,
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};
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static int mxc_uart0_pins[] = {
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PE12_PF_UART1_TXD,
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PE13_PF_UART1_RXD,
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PE14_PF_UART1_CTS,
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PE15_PF_UART1_RTS
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};
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static int uart_mxc_port0_init(struct platform_device *pdev)
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{
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return mxc_gpio_setup_multiple_pins(mxc_uart0_pins,
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ARRAY_SIZE(mxc_uart0_pins), "UART0");
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}
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static int uart_mxc_port0_exit(struct platform_device *pdev)
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{
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mxc_gpio_release_multiple_pins(mxc_uart0_pins,
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ARRAY_SIZE(mxc_uart0_pins));
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return 0;
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}
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static int mxc_uart1_pins[] = {
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PE3_PF_UART2_CTS,
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PE4_PF_UART2_RTS,
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PE6_PF_UART2_TXD,
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PE7_PF_UART2_RXD
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};
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static int uart_mxc_port1_init(struct platform_device *pdev)
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{
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return mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
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ARRAY_SIZE(mxc_uart1_pins), "UART1");
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}
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static int uart_mxc_port1_exit(struct platform_device *pdev)
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{
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mxc_gpio_release_multiple_pins(mxc_uart1_pins,
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ARRAY_SIZE(mxc_uart1_pins));
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return 0;
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}
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static int mxc_uart2_pins[] = { PE8_PF_UART3_TXD,
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PE9_PF_UART3_RXD,
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PE10_PF_UART3_CTS,
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PE11_PF_UART3_RTS };
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static int uart_mxc_port2_init(struct platform_device *pdev)
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{
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return mxc_gpio_setup_multiple_pins(mxc_uart2_pins,
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ARRAY_SIZE(mxc_uart2_pins), "UART2");
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}
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static int uart_mxc_port2_exit(struct platform_device *pdev)
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{
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mxc_gpio_release_multiple_pins(mxc_uart2_pins,
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ARRAY_SIZE(mxc_uart2_pins));
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return 0;
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}
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static struct imxuart_platform_data uart_pdata[] = {
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{
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.init = uart_mxc_port0_init,
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.exit = uart_mxc_port0_exit,
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.flags = IMXUART_HAVE_RTSCTS,
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}, {
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.init = uart_mxc_port1_init,
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.exit = uart_mxc_port1_exit,
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.flags = IMXUART_HAVE_RTSCTS,
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}, {
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.init = uart_mxc_port2_init,
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.exit = uart_mxc_port2_exit,
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.flags = IMXUART_HAVE_RTSCTS,
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},
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};
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static int mxc_fec_pins[] = {
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PD0_AIN_FEC_TXD0,
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PD1_AIN_FEC_TXD1,
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PD2_AIN_FEC_TXD2,
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PD3_AIN_FEC_TXD3,
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PD4_AOUT_FEC_RX_ER,
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PD5_AOUT_FEC_RXD1,
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PD6_AOUT_FEC_RXD2,
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PD7_AOUT_FEC_RXD3,
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PD8_AF_FEC_MDIO,
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PD9_AIN_FEC_MDC,
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PD10_AOUT_FEC_CRS,
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PD11_AOUT_FEC_TX_CLK,
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PD12_AOUT_FEC_RXD0,
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PD13_AOUT_FEC_RX_DV,
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PD14_AOUT_FEC_RX_CLK,
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PD15_AOUT_FEC_COL,
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PD16_AIN_FEC_TX_ER,
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PF23_AIN_FEC_TX_EN
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};
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static void gpio_fec_active(void)
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{
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mxc_gpio_setup_multiple_pins(mxc_fec_pins,
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ARRAY_SIZE(mxc_fec_pins), "FEC");
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}
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static struct mxc_nand_platform_data pcm038_nand_board_info = {
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.width = 1,
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.hw_ecc = 1,
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};
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static struct platform_device *platform_devices[] __initdata = {
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&pcm038_nor_mtd_device,
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&mxc_w1_master_device,
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&mxc_fec_device,
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&pcm038_sram_mtd_device,
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};
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/* On pcm038 there's a sram attached to CS1, we enable the chipselect here and
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* setup other stuffs to access the sram. */
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static void __init pcm038_init_sram(void)
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{
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__raw_writel(0x0000d843, CSCR_U(1));
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__raw_writel(0x22252521, CSCR_L(1));
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__raw_writel(0x22220a00, CSCR_A(1));
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}
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#ifdef CONFIG_I2C_IMX
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static int mxc_i2c1_pins[] = {
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PC5_PF_I2C2_SDA,
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PC6_PF_I2C2_SCL
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};
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static int pcm038_i2c_1_init(struct device *dev)
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{
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return mxc_gpio_setup_multiple_pins(mxc_i2c1_pins, ARRAY_SIZE(mxc_i2c1_pins),
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"I2C1");
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}
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static void pcm038_i2c_1_exit(struct device *dev)
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{
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mxc_gpio_release_multiple_pins(mxc_i2c1_pins, ARRAY_SIZE(mxc_i2c1_pins));
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}
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static struct imxi2c_platform_data pcm038_i2c_1_data = {
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.bitrate = 100000,
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.init = pcm038_i2c_1_init,
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.exit = pcm038_i2c_1_exit,
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};
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static struct at24_platform_data board_eeprom = {
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.byte_len = 4096,
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.page_size = 32,
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.flags = AT24_FLAG_ADDR16,
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};
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static struct i2c_board_info pcm038_i2c_devices[] = {
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[0] = {
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I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
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.platform_data = &board_eeprom,
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},
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[1] = {
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I2C_BOARD_INFO("rtc-pcf8563", 0x51),
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.type = "pcf8563"
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},
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[2] = {
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I2C_BOARD_INFO("lm75", 0x4a),
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.type = "lm75"
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}
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};
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#endif
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static void __init pcm038_init(void)
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{
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gpio_fec_active();
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pcm038_init_sram();
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mxc_register_device(&mxc_uart_device0, &uart_pdata[0]);
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mxc_register_device(&mxc_uart_device1, &uart_pdata[1]);
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mxc_register_device(&mxc_uart_device2, &uart_pdata[2]);
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mxc_gpio_mode(PE16_AF_OWIRE);
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mxc_register_device(&mxc_nand_device, &pcm038_nand_board_info);
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#ifdef CONFIG_I2C_IMX
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/* only the i2c master 1 is used on this CPU card */
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i2c_register_board_info(1, pcm038_i2c_devices,
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ARRAY_SIZE(pcm038_i2c_devices));
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mxc_register_device(&mxc_i2c_device1, &pcm038_i2c_1_data);
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#endif
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platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
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#ifdef CONFIG_MACH_PCM970_BASEBOARD
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pcm970_baseboard_init();
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#endif
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}
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static void __init pcm038_timer_init(void)
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{
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mx27_clocks_init(26000000);
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}
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static struct sys_timer pcm038_timer = {
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.init = pcm038_timer_init,
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};
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MACHINE_START(PCM038, "phyCORE-i.MX27")
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.phys_io = AIPI_BASE_ADDR,
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.io_pg_offst = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
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.boot_params = PHYS_OFFSET + 0x100,
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.map_io = mxc_map_io,
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.init_irq = mxc_init_irq,
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.init_machine = pcm038_init,
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.timer = &pcm038_timer,
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MACHINE_END
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