1 /* 2 * Platform support for LPC32xx SoC 3 * 4 * Author: Kevin Wells <kevin.wells@nxp.com> 5 * 6 * Copyright (C) 2012 Roland Stigge <stigge@antcom.de> 7 * Copyright (C) 2010 NXP Semiconductors 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 */ 19 20 #include <linux/init.h> 21 #include <linux/platform_device.h> 22 #include <linux/device.h> 23 #include <linux/interrupt.h> 24 #include <linux/irq.h> 25 #include <linux/dma-mapping.h> 26 #include <linux/gpio.h> 27 #include <linux/amba/bus.h> 28 #include <linux/amba/clcd.h> 29 #include <linux/amba/pl08x.h> 30 #include <linux/amba/mmci.h> 31 #include <linux/of.h> 32 #include <linux/of_address.h> 33 #include <linux/of_irq.h> 34 #include <linux/of_platform.h> 35 #include <linux/clk.h> 36 #include <linux/mtd/lpc32xx_slc.h> 37 #include <linux/mtd/lpc32xx_mlc.h> 38 39 #include <asm/setup.h> 40 #include <asm/mach-types.h> 41 #include <asm/mach/arch.h> 42 43 #include <mach/hardware.h> 44 #include <mach/platform.h> 45 #include <mach/board.h> 46 #include "common.h" 47 48 static struct pl08x_channel_data pl08x_slave_channels[] = { 49 { 50 .bus_id = "nand-slc", 51 .min_signal = 1, /* SLC NAND Flash */ 52 .max_signal = 1, 53 .periph_buses = PL08X_AHB1, 54 }, 55 { 56 .bus_id = "nand-mlc", 57 .min_signal = 12, /* MLC NAND Flash */ 58 .max_signal = 12, 59 .periph_buses = PL08X_AHB1, 60 }, 61 }; 62 63 static int pl08x_get_signal(const struct pl08x_channel_data *cd) 64 { 65 return cd->min_signal; 66 } 67 68 static void pl08x_put_signal(const struct pl08x_channel_data *cd, int ch) 69 { 70 } 71 72 static struct pl08x_platform_data pl08x_pd = { 73 /* Some reasonable memcpy defaults */ 74 .memcpy_burst_size = PL08X_BURST_SZ_256, 75 .memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS, 76 .slave_channels = &pl08x_slave_channels[0], 77 .num_slave_channels = ARRAY_SIZE(pl08x_slave_channels), 78 .get_xfer_signal = pl08x_get_signal, 79 .put_xfer_signal = pl08x_put_signal, 80 .lli_buses = PL08X_AHB1, 81 .mem_buses = PL08X_AHB1, 82 }; 83 84 static struct lpc32xx_slc_platform_data lpc32xx_slc_data = { 85 .dma_filter = pl08x_filter_id, 86 }; 87 88 static struct lpc32xx_mlc_platform_data lpc32xx_mlc_data = { 89 .dma_filter = pl08x_filter_id, 90 }; 91 92 static const struct of_dev_auxdata lpc32xx_auxdata_lookup[] __initconst = { 93 OF_DEV_AUXDATA("arm,pl022", 0x20084000, "dev:ssp0", NULL), 94 OF_DEV_AUXDATA("arm,pl022", 0x2008C000, "dev:ssp1", NULL), 95 OF_DEV_AUXDATA("arm,pl080", 0x31000000, "pl08xdmac", &pl08x_pd), 96 OF_DEV_AUXDATA("nxp,lpc3220-slc", 0x20020000, "20020000.flash", 97 &lpc32xx_slc_data), 98 OF_DEV_AUXDATA("nxp,lpc3220-mlc", 0x200a8000, "200a8000.flash", 99 &lpc32xx_mlc_data), 100 { } 101 }; 102 103 static void __init lpc3250_machine_init(void) 104 { 105 lpc32xx_serial_init(); 106 107 /* Test clock needed for UDA1380 initial init */ 108 __raw_writel(LPC32XX_CLKPWR_TESTCLK2_SEL_MOSC | 109 LPC32XX_CLKPWR_TESTCLK_TESTCLK2_EN, 110 LPC32XX_CLKPWR_TEST_CLK_SEL); 111 112 of_platform_default_populate(NULL, lpc32xx_auxdata_lookup, NULL); 113 } 114 115 static const char *const lpc32xx_dt_compat[] __initconst = { 116 "nxp,lpc3220", 117 "nxp,lpc3230", 118 "nxp,lpc3240", 119 "nxp,lpc3250", 120 NULL 121 }; 122 123 DT_MACHINE_START(LPC32XX_DT, "LPC32XX SoC (Flattened Device Tree)") 124 .atag_offset = 0x100, 125 .map_io = lpc32xx_map_io, 126 .init_machine = lpc3250_machine_init, 127 .dt_compat = lpc32xx_dt_compat, 128 MACHINE_END 129